MB84VA2002 Datasheet, PDF (9/29 Pages) Fujitsu Component Limited. – 8M (x 8/x 16) FLASH MEMORY & 2M (x 8) STATIC RAM

MB84VA2002-10/MB84VA2003-10
Table 7 Flash Memory Command Definitions
Command
Sequence
Bus
Write
Cycles
First Bus
Write Cycle
Second Bus Third Bus
Write Cycle Write Cycle
Fourth Bus
Read/Write
Cycle
Fifth Bus
Write Cycle
Sixth Bus
Write
Cycle
Req’d _{Addr. Data Addr. Data Addr. Data Addr. Data Addr. Data Addr. Data}
Read/
Reset
word
Byte
1
XXXH F0H —
———
— — — ———
Read/
Reset
word
Byte
3
555H
AAAH
AAH
2AAH
555H
55H
555H
AAAH
F0H
RA
RD
—
———
Autoselect
word
Byte
3
555H
AAAH
AAH
2AAH
555H
55H
555H
AAAH
90H
—
—
—
———
Program
word
Byte
4
555H
AAAH
AAH
2AAH
555H
55H
555H
AAAH
A0H
PA
PD
—
———
Chip
Erase
word
Byte
6
555H
AAAH
AAH
2AAH
555H
55H
555H
AAAH
80H
555H
AAAH
AAH
2AAH
555H
55H
555H
AAAH
10H
Sector
Erase
word
Byte
6
555H
AAAH
AAH
2AAH
555H
55H
555H
AAAH
80H
555H
AAAH
AAH
2AAH
555H
55H
SA
30H
Sector Erase Suspend Erase can be suspended during sector erase with Addr (“H” or “L”). Data (B0H)
Sector Erase Resume Erase can be resumed after suspend with Addr (“H” or “L”). Data (30H)
Set to word
Fast Mode Byte
3
555H
AAAH
AAH
2AAH
555H
55H
555H
AAAH
20H
—
—
—
———
Fast
word
XXXH
Program
2
A0H PA PD — — — — — — — —
(Note) Byte
XXXH
Reset _word
XXXH
XXXH
from Fast
2
90H
F0H — — — — — — — —
Mode
Byte
XXXH
XXXH
Extended word
Sector
4
Protect Byte
XXXH 60H SPA 60H SPA 40H SPA SD —
———
Address bits A11 to A20 = X = “H” or “L” for all address commands except for Program Address (PA) and Sector
Address (SA).
Bus operations are defined in Table 2.
Both Read/Reset commands are functionally equivalent, resetting the device to the read mode.
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 write pulse.
SA =Address of the sector to be erased. The combination of A20, A19, A18, A17, A16, A15, A14, and A13 will
uniquely select any sector.
RD =Data read from location RA during read operation.
PD =Data to be programmed at location PA.
SPA =Sector address to be protected. Set sector address (SA) and (A6, A1, A0) = (0, 1, 0).
SD =Sector protection verify data. Output 01H at protected sector addresses and output 00H at unprotected
sector addresses.
Note:This command is valid while Fast Mode.
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