MB84VD2108X Datasheet, PDF (7/55 Pages) Fujitsu Component Limited. – 16M (x8/x16) FLASH MEMORY & 2M (x8/x16) STATIC RAM

MB84VD2108X-85/MB84VD2109X-85
s DEVICE BUS OPERATIONS
Table 2.1 User Bus Operations (Flash = Word mode; CIOf = VCCf, SRAM = Word mode; CIOs = VCCs)
Operation
(Note1, 3)
CEf
CE1s
CE2s
OE
WE
SA
(Note 6)
LBs
UBs
DQ0 to
DQ7
DQ8 to
DQ15
RESET
WP/ACC
(Note 5)
Full Standby
HX
H
XX
X
X X HIGH-Z HIGH-Z H
X
XL
Output Disable
HH X
X X HIGH-Z HIGH-Z
HL
H
XX
X
H H HIGH-Z HIGH-Z
H
X
HX
L
HH X
X X HIGH-Z HIGH-Z
XL
Read from Flash
(Note 2)
HX
L
LH
X
XX
DOUT
DOUT
H
X
XL
Write to Flash
HX
L
HL
X
XX
DIN
DIN
H
X
XL
L
L
DOUT
DOUT
Read from SRAM
HL
H LH
X
H L HIGH-Z DOUT
H
X
L H DOUT HIGH-Z
LL
DIN
DIN
Write to SRAM
HL
H XL
X
H L HIGH-Z DIN
H
X
LH
DIN HIGH-Z
Temporary Sector
Group Unprotection X X
X XX
X
XX
X
(Note 4)
X
VID
X
HX
Flash Hardware Reset X
XX
X
X X HIGH-Z HIGH-Z L
X
XL
Boot Block Sector
Write Protection
XX
X XX
X
XX
X
X
X
L
Legend : L = VIL, H = VIH, X = VIL or VIH, See “ELECTRICAL CHARACTERISTICS 1. 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 (9 V) ; Program time will reduce by 40%.
6. SA ; Don’t care or Open.
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