CY7C138-15JXC Cypress Semiconductor Corp, CY7C138-15JXC Datasheet - Page 6

• Manufacturer Part Number: CY7C138-15JXC
• Description: IC SRAM 32KBIT 15NS 68PLCC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C138-15JXC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 32K (4K x 8)
• Speed: 15ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Document #: 38-06037 Rev. *B
Switching Characteristics
Switching Waveforms
Read Cycle No. 1 (Either Port Address Access)
Read Cycle No. 2 (Either Port CE/OE Access)
Notes:
16. R/W is HIGH for read cycle.
17. Device is continuously selected CE = LOW and OE = LOW. This waveform cannot be used for semaphore reads.
18. Address valid prior to or coincident with CE transition LOW.
19. CE
t
t
t
t
t
INS
INR
SOP
SWRD
SPS
INTERRUPT TIMING
SEMAPHORE TIMING
Parameter
DATA OUT
ADDRESS
L
SEM or CE
= L, SEM = H when accessing RAM. CE = H, SEM = L when accessing semaphores.
DATA OUT
I
OE
I
CC
SB
INT Set Time
INT Reset Time
SEM Flag Update Pulse (OE or SEM)
SEM Flag Write to Read Time
SEM Flag Contention Window
PREVIOUS DATA VALID
[14]
t
PU
Description
t
OHA
Over the Operating Range
t
LZCE
t
LZOE
t
AA
t
ACE
[16, 18, 19]
[16, 17]
t
DOE
Min.
10
5
5
7C138-15
7C139-15
t
[9]
RC
Max.
15
15
(continued)
Min.
10
5
5
7C138-25
7C139-25
DATA VALID
Max.
25
25
Min.
15
5
5
DATA VALID
7C138-35
7C139-35
t
HZOE
Max.
25
25
t
HZCE
Min.
20
5
5
7C138-55
7C139-55
t
PD
CY7C138
CY7C139
Max.
Page 6 of 16
30
30
Unit
ns
ns
ns
ns
ns
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