FM25D04B-85CB4Y View Datasheet(PDF) - FIDELIX

Part Name

Description

Manufacturer

FM25D04B-85CB4Y

32M-BIT Serial Flash Memory with 4KB Sectors, Dual and QuadI/O SPI

FIDELIX 

FM25Q32

11.2.24 Read Manufacturer/ Device ID (90h),(EFh),(DFh)

The Read Manufacturer/ Device ID instruction is an alternative to the Release from Power-down /

Device ID instruction that provides both the JEDEC assigned manufacturer ID and the specific

device ID.

The Read Manufacturer/ Device ID instruction is very similar to the Release from Power-down /

Device ID instruction. The instruction is initiated by driving the /CS pin low and shifting the

instruction code “90h” or “EFh” or “DFh” followed by a 24-bit address (A23-A0) of 000000h. After

which, the Manufacturer ID for FIDELIX SEMICONDUCTOR (F8h) and the Device ID are shifted

out on the falling edge of CLK with most significant bit(MSB) first as shown in figure 24a, 24b or

24c. The Device ID value for the FM25Q32 is listed in Manufacturer and Device Identification table.

If the 24-bit address is initially set to 000001h the Device ID will be read first and then followed by

the Manufacturer ID. The Manufacturer and Device IDs can be read continuously, alternating from

one to the other. The instruction is completed by driving/CS high.

Figure 24a. Read Manufacturer/ Device ID Diagram

preliminary(Aug.18.2010) 40

Share Link: