CY7C4255V-25ASC Cypress Semiconductor Corp, CY7C4255V-25ASC Datasheet - Page 2

• Manufacturer Part Number: CY7C4255V-25ASC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4255V-25ASC

• Configuration: Dual
• Density: 144Kb
• Access Time (max): 15ns
• Word Size: 18b
• Organization: 8Kx18
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: TQFP
• Clock Freq (max): 40MHz
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Supply Current: 30mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / Rohs Status: Not Compliant

Logic Block Diagram
Pinouts
Document #: 38-06012 Rev. *B
WXO/HF
FL/RT
RXO
WXI
RXI
RS
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
WCLK
15
14
13
12
11
10
9
5
1
8
7
6
4
3
2
0
EXPANSION
CONTROL
POINTER
RESET
WRITE
WRITE
LOGIC
LOGIC
Figure 1. Pin Diagram - 64-Pin STQFP
WEN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CY7C4255V
CY7C4265V
CY7C4275V
CY7C4285V
OUTPUT REGISTER
THREE-ST ATE
Top View
REGISTER
High
Density
Dual-Port
RAM Array
D
Q
INPUT
16Kx9
32Kx9
64Kx9
0 – 17
8Kx9
0 – 17
OE
RCLK
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
PROGRAM
REGISTER
CONTROL
POINTER
FLAG
LOGIC
READ
READ
FLAG
CY7C4255V, CY7C4265V
CY7C4275V, CY7C4285V
4275V–3
REN
Q
Q
GND
Q
Q
V
Q
Q
GND
Q
Q
Q
Q
GND
Q
V
CC
CC
14
13
12
11
10
9
8
7
6
5
4
4275V–1
FF
EF
PAE
PAF
SMODE
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