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MB84VD21091 Datasheet(PDF) 8 Page - Fujitsu Component Limited.

Part # MB84VD21091
Description  16M (x8/x16) FLASH MEMORY & 2M (x8/x16) STATIC RAM
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Manufacturer  FUJITSU [Fujitsu Component Limited.]
Direct Link  http://edevice.fujitsu.com/fmd/en/index.html
Logo FUJITSU - Fujitsu Component Limited.

MB84VD21091 Datasheet(HTML) 8 Page - Fujitsu Component Limited.

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MB84VD2108X-85/MB84VD2109X-85
8
Table 2.2 User Bus Operations (Flash
= Word mode; CIOf = VCCf, SRAM = Byte mode; CIOs = VSS)
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.
Operation
(Note 1, 3)
CEfCE1sCE2s
OE WE
SA
LBs
(Note 6)
UBs
(Note 6)
DQ0 to
DQ7
DQ8 to
DQ15
RESET
WP/ACC
(Note 5)
Full Standby
H
HX
X
X
X
X
X
HIGH-Z HIGH-Z
H
X
XL
Output Disable
HL
H
H
H
X
X
X
HIGH-Z HIGH-Z
HX
X
X
X
X
X
HIGH-Z HIGH-Z
L
HX
H
H
X
X
X
HIGH-Z HIGH-Z
XL
Read from Flash
(Note 2)
L
HX
LH
X
X
X
DOUT
DOUT
HX
XL
Write to Flash
L
HX
HL
X
X
X
DIN
DIN
HX
XL
Read from SRAM
H
L
H
L
H
SA
X
X
DOUT
HIGH-Z
H
X
Write to SRAM
H
L
H
X
L
SA
X
X
DIN
HIGH-Z
H
X
Temporary
Sector Group
Unprotection
(Note 4)
X
X
X
XXX
X
X
X
X
VID
X
Flash Hardware
Reset
X
HX
X
X
X
X
X
HIGH-Z HIGH-Z
L
X
XL
Boot Block Sector
Write Protection
X
X
X
XXX
X
X
X
X
X
L


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