MB84VD2208XEA-90 Просмотр технического описания (PDF) - Fujitsu
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MB84VD2208XEA-90 Datasheet PDF : 61 Pages
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MB84VD2208XEA-90/MB84VD2209XEA-90
s DEVICE BUS OPERATIONS
Table 1. 1 User Bus Operations (Flash=Word mode; CIOf=VCCf, SRAM=Word mode; CIOs=Vccs)
Operation
(Note1, 3)
CEf
CE1s
CE2s
OE
WE
SA
(Note6)
LBs
UBs
DQ0 to
DQ7
DQ8 to
DQ15
RESET
WP/
ACC
(Note5)
Full Standby
HX
H
XX
X
X X HIGH-Z HIGH-Z H
X
XL
Output Disable
HH
X
X X HIGH-Z HIGH-Z
HL H
XX
X
H H HIGH-Z HIGH-Z
H
X
HX
L
HH
X
X X HIGH-Z HIGH-Z
XL
Read from Flash
(Note2)
HX
L
LH X
XX
DOUT
DOUT
H
XL
X
Write to Flash
HX
L
HL
X
XX
DIN
DIN
H
X
XL
L
L
DOUT
DOUT
Read from SRAM
H L H LH 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 X X X
XX
X
(Note4)
X
VID
X
Flash Hardware
Reset
HX
X
XX
X
X X HIGH-Z HIGH-Z L
XL
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 "sELECTRICAL 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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