MX29LV640D MCNIX [Macronix International], MX29LV640D Datasheet - Page 21

• Manufacturer Part Number: MX29LV640D
• Description: 64M-BIT [8M x 8/4M x 16] SINGLE VOLTAGE 3V
• 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:PM1208
Manufacturer ID
Device ID
Secured Silicon
Sector Protect Verify
cluded)
Word
Byte
Word
Byte
Word
Byte
Word
Byte
(Sector address) X 02
(Sector address) X 04
Address
X00
X00
X01
X02
X03
X06
21
MX29LV640D T/B
22C9/22CB
Data (Hex)
88/08 (B)
88/08 (B)
98/18 (T)
98/18 (T)
C9/CB
00/01
00/01
C2
C2
Factory locked/unlocked
Factory locked/unlocked
Top/Bottom Boot Sector
Top/Bottom Boot Sector
Unprotected/protected
Unprotected/protected
Representation
REV. 1.6, AUG. 16, 2008