Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 1 of 39
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 2 of 39
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`U.S. Patent No. 6,724,241 (“’241 Patent”)
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`Accused Products
`Dell/EMC products with SanDisk/Toshiba 64L 3D NAND flash chips, including without limitation the Dell/EMC XPS 15 2-
`in-1 9575 (“Accused Products”), infringe at least Claim 1 of the ’241 Patent.
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`Claim 1
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`Claim 1
`1[pre]. A charge pump circuit
`for generating a charge pump
`voltage having minimal
`voltage ripples, comprising:
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`Accused Products
`To the extent the preamble is limiting, each Accused Product includes a charge pump circuit for
`generating a charge pump voltage having minimal voltage ripples.
`For example, the Dell/EMC XPS 15 2-in-1 9575 includes the charge pump circuit of the
`SanDisk/Toshiba 3D NAND flash chip, die identifier FRN1256G.
`See, e.g.:
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 3 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights Deep Dive Teardown, Dell/EMC XPS 15 2-in-1 9575 ID306753-GDd
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 4 of 39
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`Claim 1
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`Accused Products
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`VHA1
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`VHA2
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3 Charge Pump System
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`A charge pump
`circuit
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 5 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3 Charge Pump System
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`having
`minimal
`voltage
`ripples
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`VH
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 6 of 39
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`Claim 1
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`Accused Products
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`for generating a charge
`pump voltage (VHA1,
`VHA2)
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8 Charge Pump Block 5
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`VHA1 and VHA2 are
`driven by the same
`pumping circuit
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`A charge pump
`circuit
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 7 of 39
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`Claim 1
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`Accused Products
`Charge pump output voltage VHA2 is provided to
`high voltage switches to selectively drive PNWELL.
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.5.17.3 PNWELL Voltage Selector
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 8 of 39
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`Claim 1
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`1[a] a pumping circuit
`comprising one or more stages
`operable to receive a supply
`voltage and generate a selected
`one of a plurality of pump
`voltages;
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`Accused Products
`Charge pump output voltage VHA1 is provided to high
`voltage switches to selectively drive wordline circuits.
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 4.2.1 Wordline Voltage Switch Block 1
`Each Accused Product includes a pumping circuit comprising one or more stages operable to
`receive a supply voltage and generate a selected one of a plurality of pump voltages.
`For example, in the pumping circuit, 1, 2, or 3 main stages can be enabled for operation. Supply
`voltage can be selected from external VCC or internally generated pumped voltages VHBL or
`VHB1. VHA2 is provided to a level detector which suspends pump clocks when a desired level is
`reached. VHA2 is scaled by a fixed ratio voltage divider (Voltage Divider 2). It is then compared
`(using Amplifier 12) to an adjustable reference voltage (generated by Reference Voltage
`Regulator). A 4-bit digital code CF(75:72) adjusts the output reference voltage by shorting out
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 9 of 39
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`Claim 1
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`Accused Products
`resistors in a resistor divider, thereby providing programmable pump output voltage levels on
`VHA1 and VHA2. A comparator (Amplifier 12) compares the scaled VHA2 to the programmable
`reference voltage. If the scaled VHA2 exceeds the programmable reference voltage, output
`VHA_LDET3 transitions from 1 to 0 to stop further pumping. VHA_CK2 and VHA_CK2* drive
`the middle stage of the pumping circuit. VHA_PH2 non-overlapping clocks drive Charge Pump
`13. When VHA_PH2 clocks are suspended the pump stops operating so that VHA1 is limited to
`the voltage set by the level detector.
`See, e.g.:
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 10 of 39
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`Claim 1
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`Accused Products
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`operable to receive
`a supply voltage
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`a pumping circuit
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8 Charge Pump Block 5
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 11 of 39
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`Claim 1
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`Accused Products
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`operable to receive a supply
`voltage (VCC)
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8.6 Voltage Switch 55
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 12 of 39
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`Claim 1
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`Accused Products
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`a pumping circuit
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`comprising one or
`more stages
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8 Charge Pump Block 5
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 13 of 39
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`Claim 1
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`Accused Products
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`a pumping circuit
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8.14 Charge Pump 13
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 14 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8.14 Charge Pump 13
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`comprising
`one or more
`stages
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 15 of 39
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`Claim 1
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`Accused Products
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`and generate a
`selected one of a
`plurality of pump
`voltages (VHA1,
`VHA2)
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14 Charge Pump Block 4
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 16 of 39
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`Claim 1
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`Accused Products
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`VHA2
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`and generate a selected one
`of a plurality of pump
`voltages (VHA2L)
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.1 Voltage Switch 51
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 17 of 39
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`Claim 1
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`Accused Products
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`VHA2
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`and generate a selected one
`of a plurality of pump
`voltages (VHA2L)
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14 Charge Pump Block 4
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 18 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.5.3 Voltage Divider 2; Figure 7.3.14.5 Level Detector 6
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`and generate a
`selected one of a
`plurality of pump
`voltages (VHA_LDV2)
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 19 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.5 Level Detector 6
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`and generate a selected
`one of a plurality of pump
`voltages (VHA_LDVREF)
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 20 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.5.5 Reference Voltage Regulator
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`and generate a selected
`one of a plurality of pump
`voltages (VHA_LDVREF)
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`VHA_LDV1
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 21 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.5 Level Detector 6
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 22 of 39
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`Claim 1
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`Accused Products
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`and generate a selected
`one of a plurality of
`pump voltages
`VHA_LDET3 = 0
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.5 Level Detector 6
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 23 of 39
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`Claim 1
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`Accused Products
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`VHA_LDET3 = 1
`Disables VHA_CK2 pump
`clock to 1 level
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`VHA_CK2 = 1
`VHA_CK2* = 0
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.6 Charge Pump Clock Generator 2
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`and generate a selected
`one of a plurality of
`pump voltages
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 24 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14 Charge Pump Block 4
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`and generate a selected
`one of a plurality of pump
`voltages
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 25 of 39
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`Claim 1
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`Accused Products
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`VHA_LDV1
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`and generate a selected
`one of a plurality of pump
`voltages
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`a pumping circuit
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8 Charge Pump Block 5
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 26 of 39
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`Claim 1
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`Accused Products
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`and generate a selected
`one of a plurality of pump
`voltages
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14 Charge Pump Block 4
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 27 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8 Charge Pump Block 5
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`and generate a selected
`one of a plurality of pump
`voltages
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 28 of 39
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`Claim 1
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`Accused Products
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`and generate a selected one of a
`plurality of pump voltages
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`VHA_CK2
`VHA_CK2*
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8.14 Charge Pump 13
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 29 of 39
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`Claim 1
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`Accused Products
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`VHA_CK2
`VHA_CK2*
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`VHA_PH2A
`VHA_PH2A*
`VHA_PH2B
`VHA_PH2B*
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8.12.6 Non-Overlapping Clock Generator 6
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`and generate a selected one of
`a plurality of pump voltages
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 30 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8.14 Charge Pump 13
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 31 of 39
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`Claim 1
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`Accused Products
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`and generate a selected one of
`a plurality of pump voltages
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`1[b] a plurality of loads
`selectively coupleable to an
`output of the pumping circuit,
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8.14 Charge Pump 13
`Each Accused Product includes a plurality of loads selectively coupleable to an output of the
`pumping circuit, each load associated with a specific pump voltage.
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 32 of 39
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`Claim 1
`each load associated with a
`specific pump voltage; and
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`Accused Products
`For example, VHA2 is an output of the pumping circuit. A plurality of loads (contained within
`Current Sink 2) can be selectively coupled to an output of the pumping circuit (for example
`VHA2). VHA2 is connected to pumping circuit output VHA1 through Voltage Switches 59 and
`60. VHA1 is connected to wordline decoders during read or program operations. Read, program
`and erase operations require different voltages. Each load is associated with a specific pump
`voltage to carry out these functions.
`See, e.g.:
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14 Charge Pump Block 4
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`an output of the pumping
`circuit (VHA2)
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`a plurality of
`loads
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 33 of 39
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`Claim 1
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`Accused Products
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`an output of the pumping
`circuit
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.8 Charge Pump Block 5
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 34 of 39
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`Claim 1
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`Accused Products
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`an output of the pumping
`circuit
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`a plurality of
`loads
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.9 Current Sink 2
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`selectively coupleable
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 35 of 39
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`Claim 1
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`Accused Products
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`an output of the pumping circuit
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.5.17.3 PNWELL Voltage Selector
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`each load
`associated with a
`specific pump
`voltage
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 36 of 39
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`Claim 1
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`Accused Products
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`an output of the pumping
`circuit
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 4.2.1 Wordline Voltage Switch Block 1
`Each Accused Product includes a load selector means for selectively coupling a load associated
`with a specific pump voltage to the output of said pumping circuit.
`For example, the highlighted transistors below and their respective gate control signals form a
`load selector means. The output signal VHA_LDET4 from Level Detector 6 forms part of the load
`selector means. For example, the gate control signals are generated in part by a charge pump
`control signal (VHA_CTL1). This 3 bit value selectively couples a load associated with a specific
`pump voltage.
`See, e.g.:
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`each load
`associated with
`a specific pump
`voltage
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`1[c] a load selector means for
`selectively coupling a load
`associated with a specific
`pump voltage to the output of
`said pumping circuit
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 37 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.5 Level Detector 6
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`a load selector means
`(part of)
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 38 of 39
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`Claim 1
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`Accused Products
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.9 Current Sink 2
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`a load selector means
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`37
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`Case 6:21-cv-00361-ADA Document 1-2 Filed 04/12/21 Page 39 of 39
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`Claim 1
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`Accused Products
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`output of the pumping
`circuit
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`Source: TechInsights CircuitVision Analysis of the Sandisk/Toshiba 05138_064G 3D NAND
`Flash, Figure 7.3.14.9 Current Sink 2
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`associated with a
`specific pump voltage
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`selectively coupling a
`load
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`a load selector means
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`38
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