25Q64BV View Datasheet(PDF) - Winbond

Part Name

Description

Manufacturer

25Q64BV

64M-bit Serial Flash Memory with uniform 4KB sectors and Dual/Quad SPI

Winbond 

W25Q64BV

11.2.28 Read JEDEC ID (9Fh)

For compatibility reasons, the W25Q64BV 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 29. For memory type and

capacity values refer to Manufacturer and Device Identification table.

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Figure 29. Read JEDEC ID Instruction Sequence Diagram

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