CY7C135-25JXI Cypress Semiconductor Corp, CY7C135-25JXI Datasheet - Page 2

• Manufacturer Part Number: CY7C135-25JXI
• Description: CY7C135-25JXI
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C135-25JXI

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 32K (4K x 8)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Selection Guide
Pin Configurations
Figure 1. Pin Diagram - CY7C135/135A (Top View)
Pin Definitions
Document #: 38-06038 Rev. *D
Maximum Access Time
Maximum Operating Current
Maximum Standby Current for
I
A
CE
OE
R/W
SEM
(CY7C1342
only)
SB1
0L–11L
L
L
Left Port
L
L
I/O
I/O
I/O
I/O
A
A
A
A
A
A
A
A
A
1L
2L
3L
4L
5L
6L
7L
8L
9L
0L
1L
2L
3L
8
9
10
11
12
13
14
15
16
17
18
19
20
Parameter
21 22 23 24 25 26 27 28 29 30 31 32 33
A
CE
OE
R/W
SEM
(CY7C1342
only)
7 6 5 4 3 2
0R–11R
Right Port
R
R
R
R
7C135/135A
1
Commercial
Commercial
52 51 50 49 48 47
Address Lines
Chip Enable
Output Enable
Read/Write Enable
Semaphore Enable. When asserted LOW, allows access to eight semaphores. The three least
significant bits of the address lines determines which semaphore to write or read. The I/O
is used when writing to a semaphore. Semaphores are requested by writing a 0 into the
respective location.
46
45
44
43
42
41
40
39
38
37
36
35
34
7C1342-15
7C135-15
OE
A
A
A
A
A
A
A
A
A
A
NC
I/O
0R
1R
2R
3R
4R
5R
6R
7R
8R
9R
220
7R
R
15
60
7C1342-20
7C135-20
190
20
50
Figure 2. Pin Diagram - CY7C1342 (Top View)
7C135/135A-25
Description
7C1342-25
I/O
I/O
I/O
I/O
A
A
A
A
A
A
A
A
A
1L
2L
3L
4L
5L
6L
7L
8L
9L
0L
1L
2L
3L
180
25
40
8
9
10
11
12
13
14
15
16
17
18
19
20
21 22 23 24 25 26 27 28 29 30 31 32 33
7 6 5 4 3 2
7C1342-35
7C135-35
CY7C135, CY7C135A
7C1342
160
1
35
30
52 51 50 49 48 47
7C1342-55
7C135-55
CY7C1342
46
45
44
43
42
41
40
39
38
37
36
35
34
160
55
30
OE
A
A
A
A
A
A
A
A
A
A
NC
I/O
Page 2 of 12
0R
1R
2R
3R
4R
5R
6R
7R
8R
9R
7R
R
0
Unit
mA
mA
ns
pin
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