CY7C4231-15AC Cypress Semiconductor Corp, CY7C4231-15AC Datasheet - Page 8
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CY7C4231-15AC
Manufacturer Part Number
CY7C4231-15AC
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C4231-15AC.pdf
(19 pages)
Specifications of CY7C4231-15AC
Configuration
Dual
Density
16Kb
Access Time (max)
10ns
Word Size
9b
Organization
2Kx9
Sync/async
Synchronous
Expandable
Yes
Bus Direction
Uni-Directional
Clock Freq (max)
66.7MHz
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Supply Current
35mA
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
32
Lead Free Status / RoHS Status
Not Compliant
Document #: 38-06016 Rev. *C
AC Test Loads and Waveforms
Switching Characteristics
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Notes:
11. C
12. C
13. Pulse widths less than minimum values are not allowed.
14. Values guaranteed by design, not currently tested.
S
A
CLK
CLKH
CLKL
DS
DH
ENS
ENH
RS
RSS
RSR
RSF
OLZ
OE
OHZ
WFF
REF
PAF
PAE
SKEW1
SKEW2
Parameter
L
L
= 30 pF for all AC parameters except for t
= 5 pF for t
Clock Cycle Frequency
Data Access Time
Clock Cycle Time
Clock HIGH Time
Clock LOW Time
Data Set-up Time
Data Hold Time
Enable Set-up Time
Enable Hold Time
Reset Pulse Width
Reset Set-up Time
Reset Recovery Time
Reset to Flag and Output Time
Output Enable to Output in Low-Z
Output Enable to Output Valid
Output Enable to Output in High-Z
Write Clock to Full Flag
Read Clock to Empty Flag
Clock to Programmable Almost-Full Flag
Clock to Programmable Almost-Full Flag
Skew Time between Read Clock and Write Clock
for Empty Flag and Full Flag
Skew Time between Read Clock and Write Clock
for Almost-Empty Flag and Almost-Full Flag
OHZ
OUTPUT
.
INCLUDING
5V
JIG AND
SCOPE
C
L
Description
[13]
R1 1.1 K Ω
Over the Operating Range
OHZ
Equivalent to:
[11, 12]
.
R2
680Ω
[14]
[14]
OUTPUT
THÉ VENIN EQUIVALENT
Min.
4.5
4.5
0.5
0.5
10
10
10
2
3
3
8
8
0
3
3
5
GND
3.0V
420Ω
-10
≤ 3 ns
Max.
100
10
8
7
7
8
8
8
8
CY7C4421/4201/4211/4221
1.91V
Min.
15
15
10
10
15
ALL INPUT PULSES
2
6
6
4
1
4
1
0
3
3
6
10%
90%
-15
CY7C4231/4241/4251
Max.
66.7
10
15
10
10
10
10
8
8
Min.
25
10
10
25
15
15
10
18
2
6
1
6
1
0
3
3
90%
-25
10%
Max.
≤ 3 ns
40
15
25
12
12
15
15
15
15
Page 8 of 19
MHz
Unit
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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