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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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IS43LD16640C bảng dữ liệu(PDF) 19 Page - Integrated Silicon Solution, Inc |
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IS43LD16640C bảng dữ liệu(HTML) 19 Page - Integrated Silicon Solution, Inc |
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19 / 142 page  IS43/46LD16640C IS43/46LD32320C Integrated Silicon Solution, Inc. — www.issi.com 19 Rev. C 07/02/2021 ® Long-term Support World Class Quality OP<1:0> Type Read-only 00 B:S4 SDRAM 01 B: Reserved 10 B: Reserved 11 B: Reserved OP<5:0> Density Read-only 0000 B: 64Mb (Reserved) 0001 B: 128Mb (Reserved) 0010 B: 256Mb (Reserved) 0011 B: 512Mb (Reserved) 0100 B: 1Gb 0101 B: 2Gb (Reserved) 0110 B: 4Gb (Reserved) 0111 B: 8Gb (Reserved) 1000 B: 16Gb (Reserved) 1001 B: 32Gb (Reserved) All others: Reserved OP<7:6> I/O width Read-only 00 B: x32 01 B: x16 10 B: x8 (Reserved) 11 B: not used MR10_Calibration (MA<7:0> = 0AH): OP7 OP6 OP5 OP4 OP3 OP2 OP1 OP0 Calibration Code OP<7:0> Calibration Code Write-only 0xFF: Calibration command after initialization 0xAB: Long calibration 0x56: Short calibration 0xC3: ZQ Reset All others: Reserved MR11:15_(Reserved) (MA<7:0> = 0BH- 0FH): OP7 OP6 OP5 OP4 OP3 OP2 OP1 OP0 RFU Notes: 1. Host processor shall not write MR10 with “Reserved” values. 2. LPDDR2 devices shall ignore calibration command, when a “Reserved” values is written into MR10. 3. See AC timing table for the calibration latency. 4. If ZQ is connected to VSSCA through RZQ, either the ZQ calibration function (see “MRW ZQ Calibration Command”) or de- fault calibration (through the ZQ RESET command) is supported. If ZQ is connected to VDDCA, the device operates with default calibration, and ZQ calibration commands are ignored. In both cases, the ZQ connection must not change after power is supplied to the device. 5. Devices that do not support calibration ignore the ZQ calibration command. |
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