MB84VD21192A View Datasheet(PDF) - Fujitsu
Part Name
Description
Manufacturer
MB84VD21192A Datasheet PDF : 55 Pages
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MB84VD2118XA-85/MB84VD2119XA-85
Table 2.2 User Bus Operations (Flash = Word mode; CIOf = VCCf, SRAM = Byte mode; CIOs = VSS)
Operation
(Note 1, 3)
CEf CE1s CE2s OE
WE
SA
LBs
(Note 6)
UBs
(Note 6)
DQ0 to
DQ7
DQ8 to
DQ15
WP/
RESET ACC
(Note 5)
Full Standby
HX
H
X XX
X
XL
X HIGH-Z HIGH-Z H
X
HHX
X
X HIGH-Z HIGH-Z
HL H
X XX
X
X HIGH-Z HIGH-Z
Output Disable
H
X
HX
L
HHX
X
X HIGH-Z HIGH-Z
XL
Read from Flash
(Note 2)
L
H
X
X
L HX
L
X
X
DOUT
DOUT
H
X
HX
Write to Flash
L
HLX
X
X
DIN
DIN
H
X
XL
Read from SRAM H L H L H SA X
X
DOUT HIGH-Z H
X
Write to SRAM
HL
H X L SA X
X
DIN HIGH-Z H
X
Temporary Sector
Group
Unprotection
X X X XXX
X
X
X
X
VID
X
(Note 4)
Flash Hardware
Reset
H
X
X
X
X XX
L
X
X HIGH-Z HIGH-Z L
X
Boot Block Sector
Write Protection
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 (9V) ; Program time will reduce by 40%.
6. LBS , UBS ; Don’t care or Open.
8
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