White Electronic Designs
WED7Fx325ZXEBSNyyC
2, 4, and 8MB, STmicro, 5.0V 4Mb Based, Uniform Sector
FLASH Module Family
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
Sector Erase
Sector Protection
Embedded Erase Algorithm
Embedded Program Algorithm (AMD Compatible)
Data Polling and Toggle Bit for Detection
100,000 Program/Erase Cycles per Block
20 Year Data Retention
PIN CONFIGURATION
PIN# PIN Name PIN# PIN Name PIN# PIN Name PIN# PIN Name
1
V
SS
21 (Note 1) 41
A11
61
DQ9
2
V
CC
22 (Note 1) 42
A10
62
DQ8
3
NC
23 (Note 1) 43
A9
63
DQ7
4
G#
24 (Note 1) 44
A8
64
DQ6
5
W0#
25
V
SS
45
A7
65
DQ5
6
W1#
26
DQ29
46
A6
66
DQ4
7
NC
27
DQ30
47
A5
67
DQ3
8
DQ16
28
DQ31
48
A4
68
DQ2
9
DQ17
29
W2#
49
A3
69
DQ1
10
DQ18
30
NC
50
A2
70
DQ0
11
DQ19
31
NC
51
A1
71
NC
12
DQ20
32
NC
52
A0
72
V
CC
13
DQ21
33
NC
53
W3#
73
PD1
14
DQ22
34
A18
54
V
SS
74
PD2
15
DQ23
35
A17
55
DQ15
75
PD3
16
DQ24
36
A16
56
DQ14
76
PD4
17
DQ25
37
A15
57
DQ13
77
PD5
18
DQ26
38
A14
58
DQ12
78
PD6
19
DQ27
39
A13
59
DQ11
79
PD7
20
DQ28
40
A12
60
DQ10
80
V
SS
Note 1: Bank Enable
DESCRIPTION
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.
The Modules are offered in Access Speeds from 70 to
150ns with an Operation Voltage Requirement of 5.0V
±10%.
PRESENCE DETECT PINS; MODULE DENSITY
SIMM Density
512K x 32
2 x 512K x 32
4 x 512K x 32
Presence Select Pin
PD1
V
SS
Open
V
SS
PD2
V
SS
Open
Open
PD3
V
SS
Open
Open
PD4
Open
V
SS
V
SS
SIMM Density
512K x 32
2 x 512K x 32
4 x 512K x 32
Pin 24
E0
E0
E0
Pin 23
NC
E1
E1
Pin 22
NC
NC
E2
Pin 21
NC
NC
E3
PIN NAME, DEFINITION
A
0-19
DQ
0-31
Address Inputs
Common Data Input/Output
Byte Write Enables
Bank Enable
Output Enable
Presence Detect
No Connect
Power 5V ± 10%
Ground
PIN CAPACITANCE
Parameter
Sym Pins
Input Capacitance
C
IN
Address
Input Capacitance
C
IN
G#
Output Capacitance C
IO
Input/Output Data Bus
Input Capacitance
C
IN
E
0-3
#
Input Capacitance
C
IN
W
0-3
#
March 2000
Rev. 0
W
0-3
#
E
0-3
#
2MB
Value
20pF
20pF
5pF
20pF
5pF
4MB
Value
40pF
40pF
10pF
20pF
10pF
8MB
Value
80pF
80pF
20pF
20pF
20pF
1
G#
PD
0-7
NC
V
CC
V
SS
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
