w25p16 Winbond Electronics Corp America, w25p16 Datasheet - Page 26

• Manufacturer Part Number: w25p16
• Description: 8m-bit And 16m-bit Serial Flash Memory
• Manufacturer: Winbond Electronics Corp America

W25P80 AND W25P16
9.2.15 JEDEC ID (9Fh)
For compatibility reasons, the W25P80/16 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 17. For the W25P80, the Memory Type is 20h and the Capacity is
14h. For the W25P16, the Memory type is also 20h and the Capacity is 15h.
Figure 17. Read JEDEC ID
- 26 -