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W25Q16JVSSIQ Datasheet(PDF) 48 Page - Winbond |
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W25Q16JVSSIQ Datasheet(HTML) 48 Page - Winbond |
48 / 75 page W25Q16JV - 47 - Read JEDEC ID (9Fh) For compatibility reasons, the W25Q16JV provides several instructions to electronically determine the identity of the device. The Read JEDEC ID instruction is compatible with the JEDEC standard for SPI compatible serial memories that was adopted in 2003. The instruction is initiated by driving the /CS pin low and shifting the instruction code “9Fh”. The JEDEC assigned Manufacturer ID byte for Winbond (EFh) and two Device ID bytes, Memory Type (ID15-ID8) and Capacity (ID7-ID0) are then shifted out on the falling edge of CLK with most significant bit (MSB) first as shown in Figure 43. For memory type and capacity values refer to Manufacturer and Device Identification table. Figure 43. Read JEDEC ID Instruction /CS CLK DI (IO 0) DO (IO 1) Mode 0 Mode 3 0 1 2 3 4 5 6 7 Instruction (9Fh) High Impedance 8 9 10 12 13 14 15 Capacity ID7-0 /CS CLK DI (IO 0) DO (IO 1) 16 17 18 19 20 21 22 23 Manufacturer ID (EFh) 24 25 26 28 29 30 7 6 5 4 3 2 1 0 * 27 15 Mode 0 Mode 3 11 7 6 5 4 3 2 1 0 * Memory Type ID15-8 = MSB * |
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