參數(shù)資料
型號: W25X40-VSSI
廠商: WINBOND ELECTRONICS CORP
元件分類: PROM
英文描述: 4M X 1 FLASH 2.7V PROM, PDSO8
封裝: 0.208 INCH, PLASTIC, SOIC-8
文件頁數(shù): 24/42頁
文件大?。?/td> 1198K
代理商: W25X40-VSSI
W25X10, W25X20, W25X40 AND W25X80
- 30 -
9.2.17 JEDEC ID (9Fh)
For compatibility reasons, the W25X10/20/40/80 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 19. For memory type and capacity values refer to Manufacturer and
Device Identification table.
Figure 19. Read JEDEC ID
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