EN25P64 Datasheet, PDF (12/34 Pages) Eon Silicon Solution Inc. – 64 Megabit Uniform Sector, Serial Flash Memory

EN25P64
Manufacturer/
Device ID
90h
Read Identification 9Fh
Enter OTP mode 3Ah
dummy
dummy
00h
(M7-M0)
(ID7-ID0) (4)
01h
(ID7-ID0)
(M7-M0)
(M7-M0) (ID15-ID8) (ID7-ID0) (5)
Notes:
1. Data bytes are shifted with Most Significant Bit first. Byte fields with data in parenthesis “( )” indicate data being read from the
device on the DO pin.
2. The Status Register contents will repeat continuously until CS# terminate the instruction.
3. The Device ID will repeat continuously until CS# terminate the instruction.
4. The Manufacturer ID and Device ID bytes will repeat continuously until CS# terminate the instruction.
00h on Byte 4 starts with MID and alternate with DID, 01h on Byte 4 starts with DID and alternate with MID.
5. (M7-M0) : Manufacturer, (ID15-ID8) : Memory Type, (ID7-ID0) : Memory Capacity.
Table 5. Manufacturer and Device Identification
OP Code
(M7-M0) (ID15-ID0) (ID7-ID0)
ABh
16h
90h
1Ch
16h
9Fh
1Ch
2017h
Write Enable (WREN) (06h)
The Write Enable (WREN) instruction (Figure 5) sets the Write Enable Latch (WEL) bit. The Write
Enable Latch (WEL) bit must be set prior to every Page Program (PP), Sector Erase (SE), Bulk Erase
(BE) and Write Status Register (WRSR) instruction.
The Write Enable (WREN) instruction is entered by driving Chip Select (CS#) Low, sending the
instruction code, and then driving Chip Select (CS#) High.
Figure 5. Write Enable Instruction Sequence Diagram
This Data Sheet may be revised by subsequent versions
12
or modifications due to changes in technical specifications.
©2004 Eon Silicon Solution, Inc.,
Rev. D, Issue Date: 2009/1/8
www.eonssi.com.