MBM29F400BC-55PF SPANSION [SPANSION], MBM29F400BC-55PF Datasheet - Page 9

• Manufacturer Part Number: MBM29F400BC-55PF
• Description: FLASH MEMORY CMOS 4M (512K x 8/256K x 16) BIT
• Manufacturer: SPANSION [SPANSION]

8
MBM29F400TC
Notes:
Read/Reset
Read/Reset
Autoselect
Program
Chip Erase
Sector
Erase
Sector Erase Suspend
Sector Erase Resume
Command
Sequence
Address bits A
Sector Address (SA).
Bus operations are defined in “MBM29F400TC/BC User Bus Operation (BYTE = V
“MBM29F400TC/BC User Bus Operation (BYTE = V
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
SA = Address of the sector to be erased. The combination of A
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:
Both Read/Reset commands are functionally equivalent, resetting the device to the read mode.
Command combinations not described in Command Definitions table are illegal.
Word Mode: 555h or 2AAh to addresses A
Byte Mode: AAAh or 555h to addresses A
Word
Word
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Byte
Byte
the WE pulse.
uniquely select any sector.
Cycles
Req'd
Write
Bus
1
3
3
4
6
6
15
to A
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)
Write Cycle
XXXh F0h
AAAh
AAAh
AAAh
AAAh
AAAh
Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data
555h
555h
555h
555h
555h
First Bus
11
-55/-70-90
= X = “H” or “L” for all address commands except or Program Address (PA) and
MBM29F400TC/BC Command Definitions
AAh
AAh
AAh
AAh
AAh
Write Cycle
2AAh
2AAh
2AAh
2AAh
2AAh
555h
555h
555h
555h
555h
—
Second
Bus
55h
55h
55h
55h
55h
—
/MBM29F400BC
10
10
to A
Write Cycle
AAAh
AAAh
AAAh
AAAh
AAAh
to A
555h
555h
555h
555h
555h
Third Bus
—
-1
0
IL
)” in DEVICE BUS OPERATION.
F0h
90h
A0h
80h
80h
—
Fourth Bus
AAAh
AAAh
Read/Write
555h
555h
RA
PA
—
—
17
Cycle
, A
16
AAh
AAh
RD
PD
, A
—
—
15
, A
Write Cycle
2AAh
2AAh
555h
555h
Fifth Bus
14
—
—
—
—
-55/-70-90
, A
13
, and A
IH
55h
55h
—
—
—
—
)” and
Write Cycle
AAAh
12
555h
Sixth Bus
SA
—
—
—
—
will
10h
30h
—
—
—
—