EN25B64 Datasheet, PDF (25/37 Pages) Eon Silicon Solution Inc. – 64 Megabit Serial Flash Memory with Boot and Parameter Sectors

EN25B64
Figure 16. 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 Manufac-
turer 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 17. The Device ID values for the EN25B64 are listed in
Table 5. If the 24-bit address is initially set to 000001h the Device ID will be read first
Figure 17. Read Manufacturer / Device ID Diagram
This Data Sheet may be revised by subsequent versions ₂₅ ©2004 Eon Silicon Solution, Inc., www.essi.com.tw
or modifications due to changes in technical specifications.
Rev. C, Issue Date: 2008/06/23