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
Table 1. 2 User Bus Operations (Flash=Word mode; CIOf=VCCf, SRAM=Byte mode; CIOs=VSS)
Operation
(Note1, 3)
CEf
CE1s CE2s OE WE
SA
LBs
(Note6)
UBs
(Note6)
DQ0 to
DQ7
DQ8 to
DQ15
RESET
WP/
ACC
(Note5)
HX
Full Standby
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
Output Disable
H
X
HX
L
HHX
X
X HIGH-Z HIGH-Z
XL
Read from Flash
(Note2)
L
H
X
X
LHX
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 H L H X L SA X
X
DIN HIGH-Z H
X
Temporary Sector
Group
Unprotection
XX
X XXX
X
X
X
X
VID
X
(Note4)
Flash Hardware
Reset
X
H
X
X
XXX
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 "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.
8
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