MB84VD2108X Datasheet, PDF (8/55 Pages) Fujitsu Component Limited. – 16M (x8/x16) FLASH MEMORY & 2M (x8/x16) STATIC RAM

MB84VD2108X-85/MB84VD2109X-85
Table 2.2 User Bus Operations (Flash = Word mode; CIOf = VCCf, SRAM = Byte mode; CIOs = VSS)
Operation
(Note 1, 3)
Full Standby
Output Disable
Read from Flash
(Note 2)
Write to Flash
Read from SRAM
Write to SRAM
Temporary
Sector Group
Unprotection
(Note 4)
Flash Hardware
Reset
Boot Block Sector
Write Protection
CEf
CE1s CE2s OE WE SA
LBs
(Note 6)
UBs
(Note 6)
DQ0 to
DQ7
DQ8 to
DQ15
RESET
WP/ACC
(Note 5)
HX
H
XXX
X
X HIGH-Z HIGH-Z H
X
XL
HHX
X
X HIGH-Z HIGH-Z
HL H
XXX
X
X HIGH-Z HIGH-Z
H
X
HX
L
HHX
X
X HIGH-Z HIGH-Z
XL
HX
L
LHX
X
X
DOUT
DOUT
H
X
XL
HX
L
HLX
X
X
DIN
DIN
H
X
XL
H L H L H SA X
X
DOUT HIGH-Z H
X
H L H X L SA X
X
DIN HIGH-Z H
X
X X X XXX
X
X
X
X
VID
X
HX
X
XXX
X
X HIGH-Z HIGH-Z L
X
XL
X X X XXX
X
X
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. LBS, UBS ; Don’t care or Open.
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