MX29LV320ETTI-70G Macronix, MX29LV320ETTI-70G Datasheet - Page 26

• Manufacturer Part Number: MX29LV320ETTI-70G
• Description: MX29LV Series 3 V 32 Mb (4M x 8/2M x 16) 70 ns Parallel Flash - TSOP-48
• Manufacturer: Macronix

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 corresponding address.
COMMAND OPERATIONS (cont'd)
SECTOR ERASE RESUME
The sector Erase Resume command is valid only when the device is in Erase-Suspended Read mode. After
erase resumes, the user can issue another Ease Suspend command, but there should be a 4ms interval be-
tween Ease Resume and the next Erase Suspend command. If the user enters an infinite suspend-resume loop,
or suspend-resume exceeds 1024 times, erase times will increase dramatically.
AUTOMATIC SELECT OPERATIONS
When the device is in Read mode, Erase-Suspended Read mode, or CFI mode, the user can issue the
Automatic Select command shown in Table 3 (two unlock cycles followed by the Automatic Select command 90h)
to enter Automatic Select mode. After entering Automatic Select mode, the user can query the Manufacturer ID,
Device ID, Security Sector locked status, or Sector-Group protected status multiple times without issuing a new
Automatic Select command.
While In Automatic Select mode, issuing a Reset command (F0h) will return the device to Read mode (or Ease-
Suspended Read mode if Erase-Suspend was active).
Another way to enter Automatic Select mode is to use one of the bus operations shown in
OPERATION. After the high voltage (Vhv) is removed from the A9 pin, the device will automatically return to
Read mode or Erase-Suspended Read mode.
After entering automatic select mode, no other commands are allowed except the reset command.
P/N:PM1575
Manufacturer ID
Device ID
Secured Silicon
Sector Protect Verify
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Address (Hex)
(Sector address) X 02
(Sector address) X 04
X00
X00
X01
X02
X03
X06
26
MX29LV320E T/B
22A7/22A8
Data (Hex)
A7/A8
99/19
99/19
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. 1.2, MAY 23, 2011
Table
2-2. BUS