MX29LV004C T/B
COMMAND DEFINITIONS
Device operations are selected by writing specific ad-
dress and data sequences into the command register.
Writing incorrect address and data values or writing them
in the improper sequence will reset the device to the
read mode. Table 4 defines the valid register command
sequences. Note that the Erase Suspend (B0H) and
Erase Resume (30H) commands are valid only while the
Sector Erase operation is in progress.
TABLE 5. MX29LV004C T/B BUS OPERATION
RE-
DESCRIPTION
CE#
OE# WE# SET#
(8)
Read
L
L
H
H
ADDRESS
A18 A12 A9 A8
A13 A10
A7
AIN
A6 A5 A1
A2
Dout
A0
Q0~Q7
Q8~Q15
BYTE
=VIH
Dout
BYTE
=VIL
Q8~Q14=High Z
Q15=A-1
Write
L
H
L
H
AIN
DIN(3)
DIN
Q8~Q14=High Z
Q15=A-1
Reset
Temporary sector unlock
Output Disable
Standby
X
X
L
Vcc±
0.3V
Sector Protect
Chip Unprotect
Sector Protection Verify
L
L
L
H
H
L
L
L
H
X
X
H
X
X
X
H
X
L
VID
H
Vcc±
0.3V
VID
VID
H
SA
X
SA
X
X
X
X
X
X
L
H
L
X
X
X
H
H
H
L
L
L
DIN
DIN
CODE(5)
X
X
X
X
X
X
X
AIN
X
X
High Z
DIN
High Z
High Z
High Z
DIN
High Z
High Z
High Z
High Z
High Z
High Z
X VID X
NOTES:
1. Manufacturer and device codes may also be accessed via a command register write sequence. Refer to Table 4.
2. VID is the Silicon-ID-Read high voltage, 11.5V to 12.5V.
3. Refer to Table 4 for valid Data-In during a write operation.
4. X can be VIL or VIH.
5. Code=00H means unprotected.
Code=01H means protected.
6. A18~A13=Sector address for sector protect.
7. The sector protect and chip unprotect functions may also be implemented via programming equipment.
8. RESET# pin for 40-TSOP package type only.
P/N:PM1148
REV. 1.3, APR. 24, 2006
8
MCNIX [ MACRONIX INTERNATIONAL ]
