MB84VD21084 View Datasheet(PDF) - Spansion Inc.
Part Name
Description
Manufacturer
MB84VD21084 Datasheet PDF : 53 Pages
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MB84VD2108XEM/2109XEM-70
s DEVICE BUS OPERATIONS
User Bus Operations Table (Flash = Word mode; CIOf = VCCf, SRAM = Word mode; CIOs = VCCs)
Operation *1, *3
CEf CE1s CE2s OE WE SA LB UB
DQ7 to
DQ0
DQ15 to
DQ8
WP/
RESET ACC
*5
Full Standby
HX
H
X X X X X High-Z High-Z
H
X
XL
Output Disable
H H X X X High-Z High-Z
HL H
X X X H H High-Z High-Z
H
X
HX
L
H H X X X High-Z High-Z
XL
Read from Flash *2
H
L
X
X
L HXX X
L
DOUT
DOUT
H
X
Write to Flash
HX
L
HL XX X
DIN
XL
DIN
H
X
LL
DOUT
DOUT
Read from SRAM
H L H L H X H L High-Z
DOUT
H
X
LH
DOUT
High-Z
LL
DIN
DIN
Write to SRAM
H L H X L X H L High-Z
DIN
H
X
LH
DIN
High-Z
Temporary Sector
Group Unprotection *4
X
X
X XXXXX
X
X
VID
X
Flash Hardware
Reset
HX
X
X X X X X High-Z High-Z
L
X
XL
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.
*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 (9 V) ; Program time will reduce by 40%.
6
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