MB84VD22280FA-70 Datasheet, PDF (6/47 Pages) SPANSION – 32M (X16) FLASH MEMORY & 8M (X16) STATIC RAM

MB84VD22280FA/FE-70/MB84VD22290FA/FE-70
s DEVICE BUS OPERATIONS
• User Bus Operations
Operation *^1,*³
CEf CE1s CE2s OE
WE
LB
UB
DQ7 to DQ0
DQ15 to DQ8
RESET
WP/
ACC*⁵
Full Standby
HX
H
X X X X High-Z
High-Z
H
X
XL
Output Disable
H H X X High-Z
High-Z
HL H
X X H H High-Z
High-Z
H
X
HX
L
H H X X High-Z
High-Z
XL
Read from Flash *²
HX
L
L HX X
XL
DOUT
DOUT
H
X
Write to Flash
HX
L
HLXX
DIN
XL
DIN
H
X
LL
DOUT
DOUT
Read from SRAM
H L H L H H L High-Z
DOUT
H
X
LH
DOUT
High-Z
LL
DIN
DIN
Write to SRAM
H L H X L H L High-Z
DIN
H
X
LH
DIN
High-Z
Temporary Sector
Group Unprotection *⁴
X
X
X XXXX
X
X
VID
X
HX
Flash Hardware Reset X
X X X X High-Z
High-Z
L
X
XL
Boot Block Sector Write
Protection
X
X
X XXXX
X
X
Legend: L = VIL, H = VIH, X = VIL or VIH. See DC Characteristics for voltage levels.
*1 : Other operations except for indicated this column are inhibited.
X
L
*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%.
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