WED7Fx325ZXEBSNyyC
2, 4, and 8MB, STmicro, 5.0V 4Mb Based,
Uniform Sector FLASH Module Family
PIN CONFIGURATION
FEATURES
■ 2, 4, and 8MB Density FLASH Modules
■ Organized as; 512K x 32, 2 x 512K x 32, and 4 x 512K x 32
■ Based on STmicro's M29F040B 5.0V FLASH Device
■ Base Component DEVICE ID = E2h
■ Base Component MANUFACTURERS ID = 20h
■ Uniform Sector Architecture
PIN# PIN Name
PIN# PIN Name
PIN# PIN Name
PIN# PIN Name
1
VSS
VCC
NC
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
(Note 1)
(Note 1)
(Note1)
(Note 1)
VSS
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
A11
A10
A9
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
DQ9
DQ8
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
NC
2
3
4
G
A8
5
W0
A7
6
W1
DQ29
DQ30
DQ31
W2
A6
7
NC
A5
■ Sector Erase
8
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQ24
DQ25
DQ26
DQ27
DQ28
A4
9
A3
■ Sector Protection
10
11
12
13
14
15
16
17
18
19
20
NC
A2
■ Embedded Erase Algorithm
NC
A1
■ Embedded Program Algorithm (AMD Compatible)
■ Data Polling and Toggle Bit for Detection
■ 100,000 Program/Erase Cycles per Block
■ 20 Year Data Retention
NC
A0
VCC
PD1
PD2
PD3
PD4
PD5
PD6
PD7
VSS
NC
W3
A18
VSS
DQ15
DQ14
DQ13
DQ12
DQ11
DQ10
A17
A16
A15
DESCRIPTION
A14
A13
The WED7F325ZXEBSN, WED7F2325ZXEBSN, and
WED7F4325ZXEBSN are organized as 512K x 32, 2 x 512K x 32
and 4 x 512K x 32 respectively. The modules are based on 4Mb
TSOP components from STmicro which are mounted onto an FR4
substrate.
A12
Note 1: Bank Enable
SIMM Density Pin 24 Pin 23
Pin 22
Pin 21
NC
512K x 32
E0
E0
E0
NC
E1
E1
NC
NC
E2
The Modules are offered in Access Speeds from 70 to 150ns with an
Operation Voltage Requirement of 5.0V ±10%.
2 x 512K x 32
4 x 512K x 32
NC
E3
PRESENCE DETECT PINS;
MODULE DENSITY
PIN NAME, DEFINITION
SIMM
Presence Select Pin
A0-19
DQ0-31
W0-3
E0-3
G
Address Inputs
Common Data Input / Output
Byte Write Enables
Bank Enable
Density
512K x 32
PD1
VSS
PD2
VSS
PD3
PD4
Open
VSS
VSS
2 x 512K x 32 Open Open
4 x 512K x 32 Open
Open
Open
VSS
VSS
Output Enable
PD0-7
NC
Presence Detect
No Connect
PINCAPACITANCE
VCC
VSS
Power 5V ±10%
Ground
2MB
4MB
Value
8MB
Value
Parameter
Sym
Cin
Cin
Cio
Cin
Cin
Pins
Address
G
Input/OutputDataBus
E0-3
W0-3
Value
20pF
20pF
5pF
20pF
5pF
InputCapacitance
InputCapacitance
OutputCapacitance
InputCapacitance
InputCapacitance
40pF
40pF
10pF
20pF
10pF
80pF
80pF
20pF
20pF
20pF
March 2000 Rev. 0
ECO #12508
1
White Electronic Designs Corporation • (508) 366-5151 • www.whiteedc.com