S25FL128K View Datasheet(PDF) - Spansion Inc.

Part Name

Description

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S25FL128K

128-Mbit CMOS 3.0 Volt Flash Memory with 104-MHz SPI (Serial Peripheral Interface) Multi I/O Bus

Spansion Inc. 

Data Sheet (Preliminary)

6.2.29

Read Manufacturer / Device ID Quad I/O (94h)

The Read Manufacturer / Device ID Quad I/O instruction is an alternative to the Read Manufacturer / Device

ID instruction that provides both the JEDEC assigned manufacturer ID and the specific device ID at 4x speed.

The Read Manufacturer / Device ID Quad I/O instruction is similar to the Fast Read Quad I/O instruction. The

instruction is initiated by driving the CS# pin low and shifting the instruction code “94h” followed by a four

clock dummy cycles and then a 24-bit address (A23-A0) of 000000h, but with the capability to input the

Address bits four bits per clock. After which, the Manufacturer ID and the Device ID are shifted out four bits

per clock on the falling edge of CLK with most significant bit (MSB) first as shown in Figure 6.35. The Device

ID values for the S25FL128K is listed in Table 6.5, Device Identification on page 17. 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 6.35 Read Manufacturer / Device ID Quad I/O Diagram

CS#

CLK

IO0

IO1

IO2

IO3

CS#

CLK

IO0

IO1

IO2

IO3

Note:

1. The “Continuous Read Mode” bits M(7-0) must be set to Fxh to be compatible with Fast Read Quad I/O instruction.

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S25FL128K

S25FL128K_00_02 April 1, 2011

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