MB84VD23280EA Datasheet, PDF (7/45 Pages) Fujitsu Component Limited. – 64M (x8/x16) FLASH MEMORY & 8M (x8/x16) STATIC RAM

MB84VD23280EA-90/MB84VD23280EE-90
Table 1. 2 User Bus Operations (Flash = Word mode; CIOf = VCCf, SRAM = Byte mode; CIOs = VSS)
Operation (1), (3)
CEf CE1s CE2s
OE
WE
SA
LBs
(6)
UBs
(6)
DQ7 to DQ0
DQ15 to DQ8
RESET
WP/
ACC
(5)
Full Standby
H
H
X
X
X X X X X HIGH-Z
L
HIGH-Z
H
X
Output Disable
HL
H
L
X
H H X X X HIGH-Z
H
X X X X X HIGH-Z
X
H H X X X HIGH-Z
L
HIGH-Z
HIGH-Z
HIGH-Z
H
X
Read from Flash
(2)
L
H
X
X
LHXX X
L
DOUT
DOUT
H
X
Write to Flash
HX
L
HLXXX
XL
Read from SRAM H L H L H SA X X
Write to SRAM
H L H X L SA X X
Temporary Sector
Group
XX
Unprotection(4)
X XXXXX
DIN
DOUT
DIN
X
DIN
H
X
HIGH-Z
HIGH-Z
H
X
H
X
X
VID
X
Flash Hardware
Reset
H
X
X
X
X X X X X HIGH-Z
L
HIGH-Z
L
X
Boot Block Sector
Write Protection
X
X
X XXXXX
X
X
X
L
Legend: L = VIL, H = VIH, X = VIL or VIH. See 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. Protect of 2 of 8 Kbytes on both ends of each boot sector.
6. LBS , UBS; Don’t care or Open.
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