MBM29F800TA-55/-70/-90/MBM29F800BA-55/-70/-90
MBM29F800TA/BA Command Definitions
Second
Bus
Fourth Bus
Read/Write
Cycle
First Bus
Third Bus
Fifth Bus
Sixth Bus
Bus
Write
Cycles
Req'd
Command
Sequence
Write Cycle
Write Cycle
Write Cycle Write Cycle
Write Cycle
Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data
Word
Byte
Word
Byte
Word
Byte
Word
Byte
Word
Byte
Word
Byte
Read/
1
3
3
4
6
6
XXXh F0h
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Reset*1
555h
AAh
2AAh
555h
2AAh
555h
2AAh
555h
2AAh
555h
2AAh
555h
555h
AAAh
555h
AAAh
555h
AAAh
555h
AAAh
555h
AAAh
Read/
55h
55h
55h
55h
55h
F0h RA*2 RD*2
90h IA*2 ID*2
Reset*1
AAAh
555h
AAh
Autoselect
—
—
AAAh
555h
AAh
Byte/Word
Program
A0h
80h
80h
PA
PD
—
—
AAAh
555h
AAh
555h
AAAh
555h
AAAh
2AAh
555h
2AAh
555h
555h
Chip Erase
AAh
AAh
55h
55h
10h
30h
AAAh
AAAh
555h
AAh
Sector Erase
SA
AAAh
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 A11 to A18 = X = “H” or “L” for all address commands except or Program Address (PA) and
Sector Address (SA).
• Bus operations are defined in “MBM29F800TA/BA User Bus Operation (BYTE = VIH)” and
“MBM29F800TA/BA User Bus Operation (BYTE = VIH)” in ■DEVICE BUS OPERATION.
• RA = Address of the memory location to be read.
IA = Autoselect read address.
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 A18, A17, A16, A15, A14, A13, and A12 will
uniquely select any sector.
• RD = Data read from location RA during read operation.
ID = Device code/manufacture code for the address located by IA.
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 A10 to A0
Byte Mode: AAAh or 555h to addresses A10 to A-1
• Both Read/Reset commands are functionally equivalent, resetting the device to the read mode.
• Command combinations not described in Command Definitions table are illegal.
*1 : Both of these reset commands are equivalent.
*2 : The fourth bus cycle is only for read.
8
SPANSION [ SPANSION ]
