S25FL128K View Datasheet(PDF) - Spansion Inc.
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S25FL128K Datasheet PDF : 59 Pages
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Data Sheet (Preliminary)
6.2.31
Read JEDEC ID (9Fh)
For compatibility reasons, the S25FL128K 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 flash 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 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 6.37. For memory type and capacity values refer to
Manufacturer and Device Identification table.
Figure 6.37 Read JEDEC ID Instruction Sequence
CS#
Mode 3
CLK Mode 0
SI
SO
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Instruction (9Fh)
High Impedance
Manufacturer ID (EFh)
CS#
CLK
1155 1166 1177 1188 119 2200 2211 2222 2233 2244 2255 2266 2277 2288 2299 3300 331
Mode 3
Mode 0
SI
Memory Type ID15-ID8
Capacity ID7-ID0
SO
7 6 5 4 3 2 1 0 7 6 5 4 3 2 10
= MSB
46
S25FL128K
S25FL128K_00_02 April 1, 2011
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