EN25S40A Datasheet, PDF (46/68 Pages) Eon Silicon Solution Inc. – 4 Megabit 1.8V Serial Flash Memory with 4Kbyte Uniform Sector

EN25S40A
Figure 33. Release Power-down / Device ID Instruction Sequence Diagram
Read Manufacturer / Device ID (90h)
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” followed by a 24-bit address (A23-A0) of 000000h. After which, the Manufacturer ID for Eon (1Ch)
and the Device ID are shifted out on the falling edge of CLK with most significant bit (MSB) first as
shown in Figure 34. The Device ID values for the EN25S40A are listed in Table 6. If the 24-bit address
is initially set to 000001h the Device ID will be read first
The Read Manufacturer/Device ID (90h) instruction is available in Standard SPI Mode only.
This Data Sheet may be revised by subsequent versions
46
or modifications due to changes in technical specifications.
©2013 Eon Silicon Solution, Inc.,
Rev. A, Issue Date: 2013/12/30
www.eonssi.com