W25Q40BLSVIP datasheet(53/74 Pages) WINBOND

部件名	W25Q40BLSVIP

功能描述	2.5V 4M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI

PDF	74 Pages

Scroll/Zoom	100%

制造商	WINBOND [Winbond]

网页	http://www.winbond.com

标志

53 / 74 page

W25Q40BL

Publication Release Date: May 04, 2012

- 53 -

Revision D

7.2.35 Read JEDEC ID (9Fh)

For compatibility reasons, the W25Q40BL 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 33. For memory type and capacity

values refer to Manufacturer and Device Identification table.

15 16

30 31

Figure 33. Read JEDEC ID Instruction Sequence

W25Q40BLSVIP 数据表(PDF) 53 Page - Winbond