MB84VD2228XEA Datasheet, PDF (8/63 Pages) Fujitsu Component Limited. – 32M (X 8/X16) FLASH MEMORY & 8M (X 8/X16) STATIC RAM

MB84VD2228XEA/EE/2229XEA/EE-90
s DEVICE BUS OPERATIONS
Table 1. 1 User Bus Operations (Flash=Word mode; CIOf=VCCf, SRAM=Word mode; CIOs=VCCs)
Operation (1), (3)
CEf CE1s CE2s
OE
WE
SA
(6)
WP/
LBs UBs DQ0 to DQ7 DQ8 to DQ15 RESET ACC
(5)
Full Standby
H
H
X
X
X X X X X HIGH-Z
L
HIGH-Z
H
X
Output Disable
HL
H
L
X
H H X X X HIGH-Z
H
X X X H H HIGH-Z
X
H H X X X HIGH-Z
L
HIGH-Z
HIGH-Z
HIGH-Z
H
X
Read from Flash
(2)
L
H
X
X
LHXX X
L
DOUT
DOUT
H
X
Write to Flash
HX
L
HLXXX
DIN
XL
DIN
H
X
LL
DOUT
DOUT
Read from SRAM H L H L H X H L HIGH-Z
DOUT
H
X
LH
DOUT
HIGH-Z
LL
DIN
DIN
Write to SRAM
H L H X L X H L HIGH-Z
DIN
H
X
LH
DIN
HIGH-Z
Temporary Sector
Group
X X X XXXXX
X
Unprotection(4)
X
VID
X
Flash Hardware
Reset
H
X
X
X
X X X X X HIGH-Z
L
HIGH-Z
L
X
Boot Block Sector
Write Protection
X
X
X XXXXX
X
X
X
L
Legend: L = VIL, H = VIH, X = VIL or VIH. See DC Characteristics for voltage levels.
Notes:
1. Other operations except for indicated this column are inhibited.
2. WE can be VIL if OE is VIL, OE at VIH initiates the write operations.
3. Do not apply CEf = VIL, CE1s = VIL and CE2s = VIH at a time.
4. It is also used for the extended sector group protections.
5. WP/ACC = VIL; protection of boot sectors.
WP/ACC = VIH; removal of boot sectors protection.
WP/ACC = VACC (9V) ; Program time will reduce by 40%.
6. SA; Don’t care or Open.
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