CY7C138-35JC Cypress Semiconductor Corp, CY7C138-35JC Datasheet - Page 9
CY7C138-35JC
Manufacturer Part Number
CY7C138-35JC
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C138-35JC.pdf
(16 pages)
Specifications of CY7C138-35JC
Density
32Kb
Access Time (max)
35ns
Operating Supply Voltage (typ)
5V
Package Type
LCC
Operating Temp Range
0C to 70C
Supply Current
160mA
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
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY7C138-35JC
Manufacturer:
CYRPESS
Quantity:
1
Part Number:
CY7C138-35JC
Manufacturer:
CYPRESS/赛普拉斯
Quantity:
20 000
Document #: 38-06037 Rev. *B
Switching Waveforms
Timing Diagram of Semaphore Contention
Timing Diagram of Read with BUSY (M/S = HIGH)
Write Timing with Busy Input (M/S=LOW)
Notes:
27. I/O
28. Semaphores are reset (available to both ports) at cycle start.
29. If t
ADDRESS
ADDRESS
DATA
SPS
DATA IN
0R
A
BUSY
BUSY
A
= I/O
R/W
is violated, the semaphore will definitely be obtained by one side or the other, but there is no guarantee which side will control the semaphore.
0R
R/W
0L
OUTL
SEM
SEM
R/W
R/W
–A
–A
0L
R
L
2R
R
R
2L
L
R
R
= LOW (request semaphore); CE
L
L
(continued)
t
PS
R
= CE
t
WB
L
[27, 28, 29]
t
= HIGH
MATCH
SPS
MATCH
t
BLA
[21]
MATCH
MATCH
t
WC
t
PWE
t
PWE
t
WH
t
WDD
t
VALID
SD
t
DDD
t
HD
t
BHA
t
BDD
CY7C138
CY7C139
VALID
Page 9 of 16
[+] Feedback