MX29LAA641D MCNIX [Macronix International], MX29LAA641D Datasheet - Page 19

• Manufacturer Part Number: MX29LAA641D
• Description: 64M-BIT [4M x 16/8M x 8] CMOS EQUAL SECTOR
• Manufacturer: MCNIX [Macronix International]

RESET
In the following situations, executing reset command will reset device back to read array mode:
• Among erase command sequence (before the full command set is completed)
• Sector erase time-out period
• Erase fail (while Q5 is high)
• Among program command sequence (before the full command set is completed, erase-suspended program in-
• Program fail (while Q5 is high, and erase-suspended program fail is included)
• Read silicon ID mode
• Sector protect verify
• CFI mode
While device is at the status of program fail or erase fail (Q5 is high), user must issue reset command to reset device
back to read array mode. While the device is in read silicon ID mode, sector protect verify or CFI mode, user must
issue reset command to reset device back to read array mode.
When the device is in the progress of programming (not program fail) or erasing (not erase fail), device will ignore reset
command.
AUTOMATIC SELECT COMMAND SEQUENCE
Automatic Select mode is used to access the manufacturer ID, device ID and to verify whether or not secured silicon
is locked and whether or not a sector is protected. The automatic select mode has four command cycles. The first two
are unlock cycles, and followed by a specific command. The fourth cycle is a normal read cycle, and user can read at
any address any number of times without entering another command sequence. The reset command is necessary to
exit the Automatic Select mode and back to read array. The following table shows the identification code with corre-
sponding address.
There is an alternative method to that shown in Table 2, which is intended for EPROM programmers and requires Vhv
on address bit A9.
P/N:PM1289
Identifier Code
Manufacturer ID
Device ID, cycle 1
Device ID, cycle 2
Device ID, cycle 3
Secured Silicon
Sector Protect Verify
cluded)
Word/Byte Mode
Word
Word
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Byte
Byte
(Sector address) X 02
(Sector address) X 04
Address
X0E
X1C
X1E
X0F
X00
X00
X01
X02
X03
X06
19
MX29LA641D H/L
Data (Hex)
2201/2200
98/18 (H)
98/18 (H)
88/08 (L)
88/08 (L)
01/00
00/01
00/01
227E
2213
C2
C2
7E
13
Factory locked/unlocked
Factory locked/unlocked
Unprotected/protected
Unprotected/protected
Representation
29LA641D H/L
REV. 1.1, JAN. 06, 2009