WED7Fx325ZXEBSNyyC
White Electronic Designs
2, 4, and 8MB, STmicro, 5.0V 4Mb Based, Uniform Sector
FLASH Module Family
PIN CONFIGURATION
PIN# PIN Name PIN# PIN Name PIN# PIN Name PIN# PIN Name
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
VSS
VCC
NC
G#
W0#
21 (Note 1) 41
22 (Note 1) 42
23 (Note 1) 43
24 (Note 1) 44
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
A8
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
VSS
DQ29
DQ30
DQ31
W2#
NC
NC
NC
NC
A18
A17
A16
A15
A14
A13
A12
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
A7
A6
A5
A4
A3
A2
A1
A0
W1#
NC
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
DQ24
DQ25
DQ26
DQ27
DQ28
VCC
W3#
VSS
PD1
PD2
PD3
PD4
PD5
PD6
PD7
VSS
DQ15
DQ14
DQ13
DQ12
DQ11
DQ10
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.
Note 1: Bank Enable
The Modules are offered in Access Speeds from 70 to
150ns with an Operation Voltage Requirement of 5.0V
10ꢀ.
SIMM Density
512K x 32
2 x 512K x 32
4 x 512K x 32
Pin 24
Pin 23
NC
E1
Pin 22
Pin 21
NC
NC
E0
E0
E0
NC
NC
E2
PRESENCE DETECT PINS; MODULE DENSITY
E1
E3
Presence Select Pin
SIMM Density
PD1
VSS
PD2
VSS
PD3
VSS
PD4
Open
VSS
512K x 32
PIN NAME, DEFINITION
2 x 512K x 32
4 x 512K x 32
Open
VSS
Open
Open
Open
Open
A0-19
DQ0-31
W0-3
Address Inputs
Common Data Input/Output
Byte Write Enables
Bank Enable
VSS
#
PIN CAPACITANCE
E0-3
G#
#
2MB
4MB
8MB
Output Enable
Presence Detect
No Connect
Parameter
Input Capacitance
Input Capacitance
Output Capacitance CIO Input/Output Data Bus
Input Capacitance
Input Capacitance
Sym Pins
CIN Address
CIN G#
Value Value Value
20pF
20pF
5pF
20pF
5pF
40pF
40pF
10pF
20pF
10pF
80pF
80pF
20pF
20pF
20pF
PD0-7
NC
VCC
VSS
Power 5V 10ꢀ
Ground
CIN E0-3
#
CIN W0-3
#
March 2000
Rev. 0
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com