CY7C425-20JC Cypress Semiconductor Corp, CY7C425-20JC Datasheet - Page 5

• Manufacturer Part Number: CY7C425-20JC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C425-20JC

• Configuration: Dual
• Density: 9Kb
• Access Time (max): 20ns
• Word Size: 9b
• Organization: 1Kx9
• Sync/async: Asynchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: PLCC
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 55mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Not Compliant

Switching Characteristics
Over the Operating Range
Notes
Document #: 38-06001 Rev. *D
6. Test conditions assume signal transition time of 3 ns or less, timing reference levels of 1.5V and output loading of the specified I
7. See the last page of this specification for Group A subgroup testing information.
8. t
9. t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RC
A
RR
PR
LZR
DVR
HZR
WC
PW
HWZ
WR
SD
HD
MRSC
PMR
RMR
RPW
WPW
RTC
PRT
RTR
EFL
HFH
FFH
REF
RFF
WEF
WFF
WHF
RHF
RAE
RPE
WAF
WPF
XOL
XOH
Parameter
as in part (a) of AC Test Load and Waveforms, unless otherwise specified.
mV from the steady state.
HZR
HZR
[,8]
[,8,9]
[8,9]
[,8]
transition is measured at +200 mV from V
and t
DVR
use capacitance loading as in part (b) of AC Test Load and Waveforms.
Read Cycle Time
Access Time
Read Recovery Time
Read Pulse Width
Read LOW to Low Z
Data Valid After Read HIGH
Read HIGH to High Z
Write Cycle Time
Write Pulse Width
Write HIGH to Low Z
Write Recovery Time
Data Setup Time
Data Hold Time
MR Cycle Time
MR Pulse Width
MR Recovery Time
Read HIGH to MR HIGH
Write HIGH to MR HIGH
Retransmit Cycle Time
Retransmit Pulse Width
Retransmit Recovery Time
MR to EF LOW
MR to HF HIGH
MR to FF HIGH
Read LOW to EF LOW
Read HIGH to FF HIGH
Write HIGH to EF HIGH
Write LOW to FF LOW
Write LOW to HF LOW
Read HIGH to HF HIGH
Effective Read from Write HIGH
Effective Read Pulse Width After EF HIGH
Effective Write from Read HIGH
Effective Write Pulse Width After FF HIGH
Expansion Out LOW Delay from Clock
Expansion Out HIGH Delay from Clock
[6, 7]
Description
OL
and –200 mV from V
OH
. t
DVR
Min
20
10
10
20
10
10
20
10
10
10
10
20
10
10
10
10
transition is measured at the 1.5V level. t
3
5
5
6
0
–10
Max
10
15
20
20
20
10
10
10
10
10
10
10
10
10
10
Min
25
10
15
25
15
10
25
15
10
15
15
25
15
10
15
15
3
5
5
8
0
–15
Max
15
15
25
25
25
15
15
15
15
15
15
15
15
15
15
Min
30
10
20
30
20
10
12
30
20
10
20
20
30
20
10
20
20
3
5
5
0
CY7C419/21/25/29/33
HWZ
–20
and t
Max
OL
20
15
30
30
30
20
20
20
20
20
20
20
20
20
20
LZR
/I
OH
transition is measured at ±100
and 30 pF load capacitance,
Min
35
10
25
35
25
10
15
35
25
10
25
25
35
25
10
25
25
3
5
5
0
–25
Max
25
18
35
35
35
25
25
25
25
25
25
25
25
25
25
Page 5 of 16
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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