MX25L8005
COMMAND DESCRIPTION
(1) Write Enable (WREN)
The Write Enable (WREN) instruction is for setting Write Enable Latch (WEL) bit. For those instructions like PP, SE, BE,
CE, and WRSR, which are intended to change the device content, should be set every time after the WREN instruction
setting the WEL bit.
The sequence of issuing WREN instruction is: CS# goes low-> sending WREN instruction code-> CS# goes high. (see
Figure11)
(2) Write Disable (WRDI)
The Write Disable (WRDI) instruction is for resetting Write Enable Latch (WEL) bit.
ThesequenceofissuingWRDIinstructionis:CS#goeslow->sendingWRDIinstructioncode->CS#goeshigh.(seeFigure
12)
The WEL bit is reset by following situations:
-Power-up
- Write Disable (WRDI) instruction completion
- Write Status Register (WRSR) instruction completion
- Page Program (PP) instruction completion
- Sector Erase (SE) instruction completion
- Block Erase (BE) instruction completion
- Chip Erase (CE) instruction completion
(3) Read Identification (RDID)
The RDID instruction is for reading the manufacturer ID of 1-byte and followed by Device ID of 2-byte. The MXIC
Manufacturer ID is C2(hex), the memory type ID is 20(hex) as the first-byte device ID, and the individual device ID of
second-byte ID is as followings: 14(hex) for MX25L8005.
ThesequenceofissuingRDIDinstructionis:CS#goeslow->sendingRDIDinstructioncode->24-bitsIDdataoutonSO
-> to end RDID operation can use CS# to high at any time during data out. (see Figure. 13)
While Program/Erase operation is in progress, it will not decode the RDID instruction, so there's no effect on the cycle of
program/erase operation which is currently in progress. When CS# goes high, the device is at standby stage.
P/N:PM1237
REV. 2.2, OCT. 23, 2008
10
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