MBM29F040C-55/-70/-90
■ LOGIC SYMBOL
Table 1 MBM29F040C Pin Configuration
Pin
Function
Address Inputs
Data Inputs/Outputs
Chip Enable
A0 to A18
DQ0 to DQ7
CE
19
A0 to A18
8
DQ0 to DQ7
CE
OE
WE
OE
Output Enable
Write Enable
WE
VSS
Device Ground
Device Power Supply
VCC
Table 2 MBM29F040C User Bus Operations
Operation
CE
L
OE
L
WE
H
A0
L
A1
L
A6
L
A9
VID
VID
A9
X
I/O
Code
Code
DOUT
Auto-Select Manufacturer Code (1)
Auto-Select Device Code (1)
Read (3)
L
L
H
H
A0
X
L
L
L
L
H
A1
X
A6
X
Standby
H
L
X
X
HIGH-Z
HIGH-Z
DIN
Output Disable
H
H
VID
L
H
X
X
X
X
Write (Program/Erase)
Enable Sector Protection (2)
Verify Sector Protection (2)
L
L
A0
X
A1
X
A6
X
A9
VID
VID
L
X
L
H
L
H
L
Code
Legend: L = VIL, H = VIH, X = VIL or VIH,
= Pulse Input. See DC Characteristics for voltage levels.
Notes:1. Manufacturer and device codes may also be accessed via a command register write sequence. See
Table 5.
2. Refer to the section on Sector Protection.
3. WE can be VIL if OE is VIL, OE at VIH initiates the write operations.
7
SPANSION [ SPANSION ]
