CY7C138-25JXI Cypress Semiconductor Corp, CY7C138-25JXI Datasheet - Page 3

• Manufacturer Part Number: CY7C138-25JXI
• Description: IC SRAM 32KBIT 25NS 68PLCC
• Manufacturer: Cypress Semiconductor Corp
• Type: Asynchronousr

Specifications of CY7C138-25JXI

• Memory Size: 32K (4K x 8)
• Package / Case: 68-PLCC
• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Access Time: 25 ns
• Maximum Clock Frequency: 1 MHz
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Current: 180 mA
• Organization: 4 K x 8
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Ports: 2
• Operating Supply Voltage: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Pin Configurations
Table 1. Pin Definitions
Table 2. Selection Guide
Document #: 38-06037 Rev. *G
I/O
A
CE
OE
R/W
SEM
INT
BUSY
M/S
V
GND
Maximum access time (ns)
Maximum operating current
Maximum standby current for I
0L–11L
CC
0L–7L
L
L
L
L
L
Left Port
L
I/O
A
CE
OE
R/W
SEM
INT
BUSY
0R–11R
0R–7R
R
R
R
R
R
R
Right Port
SB1
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
GND
I/O
GND
Description
V
V
CC
CC
0R
1R
2R
3R
4R
5R
6R
2L
3L
4L
5L
6L
7L
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
2728 29 30
9 8 7 6
Figure 1. 68-Pin PLCC (Top View)
Data bus input/output
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 will determine which semaphore to
write or read. The I/O
requested by writing a 0 into the respective location.
Interrupt flag. INT
port reads location FFE. INT
when right port reads location FFF.
Busy flag
Master or slave select
Power
Ground
3132 33 34 35 36 37 38 39 40 41 42 43
5 4 3 2 1 68
CY7C138
Commercial
Commercial
L
is set when right port writes location FFE and is cleared when left
67
0
66 65 64 63 62 61
pin is used when writing to a semaphore. Semaphores are
R
is set when left port writes location FFF and is cleared
Description
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
A
A
A
A
A
A
INT
BUSY
GND
M/S
BUSY
INT
A
A
A
A
A
5L
4L
3L
2L
1L
0L
0R
1R
2R
3R
4R
L
R
L
R
7C138-25
180
25
40
CY7C138
Page 3 of 21
Unit
mA
mA
ns
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