CY7C425-20JC Cypress Semiconductor Corp, CY7C425-20JC Datasheet - Page 2

• Manufacturer Part Number: CY7C425-20JC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C425-20JC

• Configuration: Dual
• Density: 9Kb
• Access Time (max): 20ns
• Word Size: 9b
• Organization: 1Kx9
• Sync/async: Asynchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: PLCC
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 55mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Not Compliant

Logic Block Diagram
Pin Configurations
Document #: 38-06001 Rev. *D
Figure 1. 32-Pin PLCC/LCC (Top View)
NC
D
D
FF
Q
Q
Q
D
XI
2
0
0
1
2
1
5
6
7
8
9
10
11
12
13
14 15 1617 181920
4 3 2 1 323130
7C421/5/9
7C419
7C433
29
28
27
26
25
24
23
22
21
FL/RT
XO/HF
D
D
NC
MR
EF
Q
Q
6
7
7
6
W
XI
R
CONTROL
CONTROL
WRITE
READ
Figure 2. 28-Pin DIP (Top View)
EXPANSION
LOGIC
LOGIC
FLAG
POINTER
WRITE
GND
BUFFERS
Q
Q
Q
Q
Q
D
D
D
D
D
FF
W
XI
8
3
2
1
0
0
1
2
3
8
THREE-
STATE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
7C420/1
7C424/5
7C428/9
7C432/3
7C419
DATA OUTPUTS
DATA INPUTS
RAM ARRAY
(Q 0 –Q 8 )
1024x 9
2048x 9
4096x 9
(D 0 –D 8 )
256 x 9
512 x 9
28
27
26
25
24
23
22
21
20
19
18
17
16
15
EF
FF
XO/HF
V cc
D
D
D
D
FL/RT
MR
EF
XO/HF
Q
Q
Q
Q
R
4
5
6
7
7
6
5
4
POINTER
READ
RESET
LOGIC
NC
NC
D
D
FF
Q
Q
XI
1
0
0
1
Figure 3. 32-PIn TQFP (Top View)
MR
FL/RT
CY7C419/21/25/29/33
1
2
3
4
5
6
7
8
32 3130 29 28 27
9 10 11 12 13 14 15
7C421/5/9
7C419
7C433
26
25
16
24
23
22
21
20
19
18
17
Page 2 of 16
D
FL/RT
NC
NC
MR
EF
XO/HF
Q
7
7
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