MB84VD2108X Datasheet, PDF (9/55 Pages) Fujitsu Component Limited. – 16M (x8/x16) FLASH MEMORY & 2M (x8/x16) STATIC RAM

MB84VD2108X-85/MB84VD2109X-85
Table 2.3 User Bus Operations (Flash = Byte mode; CIOf = VSS, SRAM = Byte mode; CIOs = VSS)
Operation
(Note 1, 3)
CEf
CE1s
CE2s
DQ15/
A-1
OE WE SA
LBs
(Note 6)
UBs
(Note 6)
DQ0 to
DQ7
DQ8 to
DQ14
RESET
WP/
ACC
(Note 5)
HX
Full Standby H
X XXX X
X HIGH-Z HIGH-Z H
X
XL
X HHX X
X HIGH-Z HIGH-Z
HL H
Output
Disable
X XXX X
X HIGH-Z HIGH-Z
H
X
HX
L
A-1 H H X
X
X HIGH-Z HIGH-Z
XL
Read from
HX
Flash
L
A-1 L H X
X
X
DOUT
X
H
X
(Note 2)
XL
Write to
Flash
HX
L
A-1 H L X
X
XL
X
DIN
X
H
X
Read from
SRAM
HL
H
X L H SA X
X
DOUT HIGH-Z H
X
Write to
SRAM
H L H X X L SA X
X
DIN HIGH-Z H
X
Temporary
Sector Group
Unprotection
X
X
X
X XXX
X
X
X
X
VID
X
(Note 4)
Flash Hard-
ware Reset
X
H
X
X
L
X XXX
X
X HIGH-Z HIGH-Z L
X
Boot Block
Sector Write X X X X X X X X
X
X
X
X
L
Protection
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. LBS, UBS ; Don’t care or Open.
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