MB84VD21184 View Datasheet(PDF) - Fujitsu
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Description
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MB84VD21184 Datasheet PDF : 55 Pages
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MB84VD2118XA-85/MB84VD2119XA-85
s DEVICE BUS OPERATIONS
Table 2.1 User Bus Operations (Flash = Word mode; CIOf = VCCf, SRAM = Word mode; CIOs = VCCs)
Operation
(Note 1, 3)
CEf CE1s CE2s
OE
WE
SA
(Note 6)
LBs
UBs
DQ0 to
DQ7
DQ8 to
DQ15
WP/
RESET ACC
(Note 5)
Full Standby
HX
H
XX
X
X X HIGH-Z HIGH-Z H
X
XL
HH
X
X X HIGH-Z HIGH-Z
HL H
XX
X
H H HIGH-Z HIGH-Z
Output Disable
H
X
HX
L
HH
X
X X HIGH-Z HIGH-Z
XL
Read from Flash
(Note 2)
L
H
X
X
LH
L
X
XX
DOUT
DOUT
H
X
HX
Write to Flash
L
HL
X
XX
DIN
DIN
H
X
XL
LL
DOUT
DOUT
Read from SRAM H L H L H
X
H L HIGH-Z DOUT
H
X
L H DOUT HIGH-Z
LL
DIN
DIN
Write to SRAM
H L 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
Flash Hardware
Reset
H
X
X
X
XX
L
X
X X HIGH-Z HIGH-Z L
X
Boot Block Sector
Write Protection
X
X
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 (9V) ; Program time will reduce by 40%.
6. SA ; Don’t care or Open.
7
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