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CY7C132/CY7C136
CY7C142/CY7C146
4
]
AC Test Loads and Waveforms
3.0V
5V
OUTPUT
R1893
Ω
R2
347
Ω
30 pF
INCLUDING
JIGAND
SCOPE
GND
90%
90%
10%
<5 ns
<5 ns
5V
OUTPUT
C132-5
R1893
Ω
R2
347
Ω
5pF
INCLUDING
JIGAND
SCOPE
C132-6
(a)
(b)
OUTPUT
1.4V
Equivalent to:
THVÉNIN EQUIVALENT
5V
281
Ω
30pF
BUSY
OR
INT
BUSYOutput Load
(CY7C132/CY7C136 ONLY)
10%
ALL INPUT PULSES
250
Ω
Switching Characteristics Over the Operating Range[6, 11]
Parameter
Description
7C136-15[3,4]
7C146-15
7C132-25[3]
7C136-25
7C142-25
7C146-25
7C132-30
7C136-30
7C142-30
7C146-30
Unit
Min.
Max.
Min.
Max.
Min.
Max.
READ CYCLE
tRC
Read Cycle Time
15
25
30
ns
tAA
Address to Data Valid[12]
15
25
30
ns
tOHA
Data Hold from Address Change
0
0
0
ns
tACE
CE LOW to Data Valid[12]
15
25
30
ns
tDOE
OE LOW to Data Valid[12]
10
15
20
ns
tLZOE
OE LOW to Low Z[10, 13]
3
3
3
ns
tHZOE
OE HIGH to High Z[10, 13, 14]
10
15
15
ns
tLZCE
CE LOW to Low Z[10, 13]
3
5
5
ns
tHZCE
CE HIGH to High Z[10, 13, 14]
10
15
15
ns
tPU
CE LOW to Power-Up[10]
0
0
0
ns
tPD
CE HIGH to Power-Down[10]
15
25
25
ns
WRITE CYCLE[15]
tWC
Write Cycle Time
15
25
30
ns
tSCE
CE LOW to Write End
12
20
25
ns
tAW
Address Set-Up to Write End
12
20
25
ns
tHA
Address Hold from Write End
2
2
2
ns
tSA
Address Set-Up to Write Start
0
0
0
ns
tPWE
R/W Pulse Width
12
15
25
ns
tSD
Data Set-Up to Write End
10
15
15
ns
tHD
Data Hold from Write End
0
0
0
ns
tHZWE
R/W LOW to High Z [10]
10
15
15
ns
tLZWE
R/W HIGH to Low Z [10]
0
0
0
ns
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