MBM29LV400TC
-55/70/90
/MBM29LV400BC
-55/70/90
MBM29LV400TC/400BC Standard Command Definitions
First Bus Second Bus Third Bus Fourth Bus
Fifth Bus
Sixth Bus
Write Cycle Write Cycle Write Cycle Read/Write Write Cycle Write Cycle
Cycle
Addr. Data Addr. Data Addr. Data Addr. Data Addr. Data Addr. Data
XXXh
555h
AAAh
555h
AAAh
555h
AAAh
555h
AAAh
555h
AAAh
F0h
AAh
AAh
AAh
AAh
AAh
—
2AAh
555h
2AAh
555h
2AAh
555h
2AAh
555h
2AAh
555h
—
55h
55h
55h
55h
55h
—
555h
AAAh
555h
AAAh
555h
AAAh
555h
AAAh
555h
AAAh
—
F0h
90h
A0h
80h
80h
—
RA
—
PA
555h
AAAh
555h
AAAh
—
RD
—
PD
AAh
AAh
—
—
—
—
2AAh
555h
2AAh
555h
—
—
—
—
55h
55h
—
—
—
—
555h
AAAh
SA
—
—
—
—
10h
30h
Command
Sequence
Word
Read/Reset
Bus
Write
Cycles
Req’d
Byte
Word
Read/Reset
1
3
3
4
6
6
Byte
Word
Autoselect
Byte
Word
Program
Byte
Word
Chip Erase
Byte
Word
Sector Erase
Byte
Sector Erase Suspend
Sector Erase Resume
Erase can be suspended during sector erase with Addr. (“H” or “L”). Data (B0h)
Erase can be resumed after suspend with Addr. (“H” or “L”). Data (30h)
Notes:
•
Address bits A
11
to A
17
= X = “H” or “L” for all address commands except or Program Address (PA) and
Sector Address (SA)
•
Bus operations are defined in “MBM29LV400TC/400BC User Bus Operations Tables (BYTE = V
IH
and
BYTE = V
IH
)” in
sDEVICE
BUS OPERATIONS.
•
RA = Address of the memory location to be read
PA = Address of the memory location to be programmed
Addresses are latched on the falling edge of the WE pulse.
SA = Address of the sector to be erased. The combination of A
17
, A
16
, A
15
, A
14
, A
13
, and A
12
will
uniquely select any sector.
•
RD = Data read from location RA during read operation.
PD = Data to be programmed at location PA. Data is latched on the rising edge of WE.
•
The system should generate the following address patterns:
Word Mode: 555h or 2AAh to addresses A
0
to A
10
Byte Mode: AAAh or 555h to addresses A
–1
and A
0
to A
10
•
Both Read/Reset commands are functionally equivalent, resetting the device to the read mode.
•
The command combinations not described in “MBM29LV400TC/400BC Standard Command Definitions
Table” and “MBM29LV400TC/BC Extended Command Definitions Table” in
sDEVICE
BUS
OPERATIONS are illegal.
10
SPANSION [ SPANSION ]
