MB84VD21084EM View Datasheet(PDF) - Spansion Inc.
Part Name
Description
Manufacturer
MB84VD21084EM Datasheet PDF : 53 Pages
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MB84VD2108XEM/2109XEM-70
User Bus Operations Table (Flash = Byte mode; CIOf = VSS, SRAM = Byte mode; CIOs = VSS)
Operation *1,*3
CEf CE1s CE2s DQ15/A–1 OE WE SA
LB
UB
DQ7 to
DQ0
DQ14
to DQ8
WP/
RESET ACC
*5
Full Standby
HX
H
XL
X
X X X X X High-Z High-Z H
X
Output Disable
X
H H X X X High-Z High-Z
HL H
X
X X X H H High-Z High-Z
H
X
HX
L
A–1 H H X X X High-Z High-Z
XL
HX
Read from Flash *2 L
A–1
L H X X X DOUT High-Z H
X
XL
Write to Flash
HX
L
A–1
HLX X X
DIN High-Z H
X
XL
Read from SRAM
HL H
X
L H SA X X DOUT High-Z H
X
Write to SRAM
HL H
X
X L SA X X DIN High-Z H
X
Temporary Sector
Group Unprotection *4
X
X
X
X
XXX X X
X
X
VID
X
Flash Hardware Re-
set
X
H
X
X
L
X
X X X X X High-Z High-Z L
X
Boot Block Sector
Write Protection
XX X
X
XXX X X
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%.
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