MX25L3205A
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, CE,
andWRSR,whichareintendedtochangethedevicecontent,shouldbeseteverytimeaftertheWRENinstructionsetting
the WEL bit.
The sequence of issuing WREN instruction is: CS# goes low-> sending WREN instruction code-> CS# goes high. (see
Figure12)
(2) Write Disable (WRDI)
The Write Disable (WRDI) instruction is for re-setting Write Enable Latch (WEL) bit.
ThesequenceofissuingWRDIinstructionis:CS#goeslow->sendingWRDIinstructioncode->CS#goeshigh.(seeFigure
13)
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
- 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: 16(hex) for MX25L3205A.
ThesequenceofissuingRDIDinstructionis:CS#goeslow->sendingRDIDinstructioncode->24-bitsIDdataoutonSO
-> to end RDID operation can use CS# to high at any time during data out. (see Figure. 14)
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:PM1243
REV. 1.2, NOV. 06, 2006
10
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