CY7C138-25JC Cypress Semiconductor Corp, CY7C138-25JC Datasheet - Page 5

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

Specifications of CY7C138-25JC

• 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: 0°C ~ 70°C
• Package / Case: 68-PLCC
• Density: 32Kb
• Access Time (max): 25ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Address Bus: 12b
• Package Type: PLCC
• Operating Temp Range: 0C to 70C
• Number Of Ports: 2
• Supply Current: 180mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 68
• Word Size: 8b
• Number Of Words: 4K
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1445

Switching Characteristics
Note
Document #: 38-06037 Rev. *E
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
8. Tested initially and after any design or process changes that may affect these parameters.
RC
AA
OHA
ACE
DOE
LZOE
HZOE
LZCE
HZCE
PU
PD
WC
SCE
AW
HA
SA
PWE
SD
HD
READ CYCLE
WRITE CYCLE
Parameter
[12]
[12]
OUTPUT
OUTPUT
[10,11,12]
[10,11,12]
[10,11,12]
C = 30 pF
[10,11,12]
(a) Normal Load (Load 1)
Load (Load 2)
Read Cycle Time
Address to Data Valid
Output Hold From Address Change
CE LOW to Data Valid
OE LOW to Data Valid
OE Low to Low Z
OE HIGH to High Z
CE LOW to Low Z
CE HIGH to High Z
CE LOW to Power Up
CE HIGH to Power Down
Write Cycle Time
CE LOW to Write End
Address Setup to Write End
Address Hold From Write End
Address Setup to Write Start
Write Pulse Width
Data Setup to Write End
Data Hold From Write End
C = 30 pF
5V
Description
R1 = 893Ω
R2 = 347Ω
Over the Operating Range
GND
3.0V
Figure 2. AC Test Loads and Waveforms
< 3 ns
OUTPUT
10%
C = 30pF
(b) Thé venin Equivalent ( Load 1)
Min
15
15
12
12
12
10
3
3
3
0
2
0
0
7C138-15
7C139-15
ALL INPUT PULSES
90%
R
[9]
Max
TH
15
15
10
10
10
15
= 250Ω
Min
25
25
20
20
20
15
3
3
3
0
2
0
0
7C138-25
7C139-25
V
90%
TH
10%
= 1.4V
< 3 ns
Max
25
25
15
15
15
25
OUTPUT
Min
35
35
30
30
25
15
3
3
3
0
2
0
0
7C138-35
7C139-35
C = 5 pF
CY7C138, CY7C139
(c) Three-State Delay (Load 3)
Max
35
35
20
20
20
35
Min
55
55
40
40
30
20
3
3
3
0
2
0
0
7C138-55
7C139-55
5V
Max
R1 = 893Ω
R2 = 347Ω
55
55
25
25
25
55
Page 5 of 17
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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