CY7C955-NC Cypress Semiconductor Corp, CY7C955-NC Datasheet - Page 61

• Manufacturer Part Number: CY7C955-NC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C955-NC

• Lead Free Status / RoHS Status: Not Compliant

Capacitance
AC Test Loads and Waveforms
Switching Characteristics
GND
3.0V
Parameter
C
C
C
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Microprocessor Interface Read Cycle
SAR
HRA
SAL
HLA
PL
SLR
HRL
SRD
HRD
SRI
Microprocessor Interface Write Cycle
SAW
SDW
SAL
HLA
PL
SLW
IN
OUT
IO
Parameter
R1=910
R2=510
C
(Includes fixture and
probe capacitance)
L
< 30 pF
1 ns
(c) TTL Input Test Waveform
1.0V
Valid Address to Read Set-Up
Read to Address Invalid Hold
Valid Address to Address Latch Enable Set-Up
Address Latch Enable to Address Invalid Hold
Address Latch Enable Pulse Width
Address Latch Enable to Read Set-Up
Read to Address Latch Enable Hold
Read to Valid Data Set-Up
Read to Data Invalid Hold
Read to Interrupt Inactive
Valid Address to Write Set-Up
Valid Data to Write Set-Up
Valid Address to Address Latch Enable Set-Up
Address Latch Enable to Address Invalid Hold
Address Latch Enable Pulse Width
Address Latch Enable to Write Set-Up
OUTPUT
2.0V
(a) TTL AC Test Load
3.0V
C
Description
Input pin capacitance
Output pin capacitance
Input / Output pin capacitance
L
Over the Operating Range
5V
PRELIMINARY
2.0V
R1
R2
1.0V
Description
7C955-13
1 ns
V
V
61
IHE
ILE
(b) PECL AC Test Load
C
1 ns
L
20%
(d) PECL Input Test Waveform
80%
R
L
V
CC
V
V
IHE
ILE
– 1.33
Min.
25
20
10
20
25
20
20
10
20
Max.
7
7
7
5
0
5
0
80%
R
C
(Includes fixture and
probe capacitance)
7C955-12
L
L
=50
< 5 pF
Max.
20%
80
20
50
1 ns
CY7C955
Unit
pF
pF
pF
7C955-14
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns