CY7C4235-15ACT Cypress Semiconductor Corp, CY7C4235-15ACT Datasheet - Page 9
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CY7C4235-15ACT
Manufacturer Part Number
CY7C4235-15ACT
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C4235-15ACT.pdf
(22 pages)
Specifications of CY7C4235-15ACT
Configuration
Dual
Density
36Kb
Access Time (max)
10ns
Word Size
18b
Organization
2Kx18
Sync/async
Synchronous
Expandable
Yes
Bus Direction
Uni-Directional
Package Type
TQFP
Clock Freq (max)
66.7MHz
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Supply Current
45mA
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
64
Lead Free Status / RoHS Status
Not Compliant
Switching Characteristics
Document Number: 001-45652 Rev. **
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Notes
S
A
CLK
CLKH
CLKL
DS
DH
ENS
ENH
RS
RSR
RSF
PRT
RTR
OLZ
OE
OHZ
WFF
REF
PAFasynch
PAFsynch
PAEasynch
PAEsynch
13. C
14. C
15. Pulse widths less than minimum values are not allowed.
16. Values guaranteed by design, not currently tested.
17. t
Parameter
PAFasynch
L
L
= 30 pF for all AC parameters except for t
= 5 pF for t
Equivalent to:
, t
PAEasynch
OHZ
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 Recovery Time
Reset to Flag and Output Time
Retransmit Pulse Width
Retransmit Recovery 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
Clock to Programmable Almost-Empty Flag
Clock to Programmable Almost-Full Flag
(Asynchronous mode, V
(Synchronous mode, V
(Asynchronous mode, V
(Synchronous mode, V
.
, after program register write will not be valid until 5 ns + t
OUTPUT
OUTPUT
THÉVENIN EQUIVALENT
5V
INCLUDING
JIG AND
SCOPE
Description
[15]
Over the Operating Range
C
CC
L
CC
CC
Rth = 410Ω
Figure 5. AC Test Loads and Waveforms
CC
/SMODE tied to V
OHZ
R1 = 1.1KΩ
/SMODE tied to V
/SMODE tied to V
/SMODE tied to V
.
[16]
[16]
R2 =680Ω
Vth = 1.91V
[17]
CC
[17]
)
SS
SS
CC
)
)
)
PAF(E)
Min.
4.5
4.5
0.5
0.5
10
10
12
12
2
3
3
8
0
3
3
.
-10
Max.
100
10
12
12
8
7
7
8
8
8
8
GND
3.0V
≤ 3 ns
Min.
15
15
10
15
15
2
6
6
4
1
4
1
0
3
3
[13, 14]
-15
Max.
66.7
10
15
10
10
16
10
16
10
8
8
ALL INPUT PULSES
10%
90%
CY7C4425/4205/4215
CY7C4225/4235/4245
Min.
25
10
10
25
15
25
25
2
6
1
6
1
0
3
3
-25
Max.
40
15
25
12
12
15
15
20
15
20
15
Min.
35
14
14
35
20
35
35
2
7
2
7
2
0
3
3
90%
-35
10%
≤ 3 ns
Max.
28.6
Page 9 of 22
20
35
15
15
20
20
25
20
25
20
MHz
Unit
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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