CY7C025-25JI Cypress Semiconductor Corp, CY7C025-25JI Datasheet - Page 14

• Manufacturer Part Number: CY7C025-25JI
• Description: SRAM Chip Async Dual 5V 128K-Bit 8K x 16 25ns 84-Pin PLCC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C025-25JI

• Package: 84PLCC
• Timing Type: Asynchronous
• Density: 128 Kb
• Typical Operating Supply Voltage: 5 V
• Address Bus Width: 12 Bit
• Number Of I/o Lines: 16 Bit
• Number Of Ports: 2
• Number Of Words: 8K

Switching Waveforms
Interrupt Timing Diagrams
Left Side Sets INT
Right Side Clears INT
Right Side Sets INT
Left Side Clears INT
Notes:
38. t
39. t
ADDRESS
ADDRESS
ADDRESS
ADDRESS
HA
INS
R/W
R/W
R/W
R/W
INT
depends on which enable pin (CE
INT
OE
CE
or t
INT
OE
INT
CE
CE
CE
INR
R
R
R
R
R
R
R
L
L
L
L
L
L
R
R
R
L
L
depends on which enable pin (CE
R
L
:
L
:
:
R
:
(continued)
L
t
INS
or R/W
t
WRITE FFF (1FFF CY7C025)
INS
WRITE FFE (1FFE CY7C025)
[39]
[39]
L
L
or R/W
) is deasserted first.
t
L
INR
) is asserted last.
t
WC
[39]
t
WC
t
INR
t
t
[39]
HA
HA
[38]
[38]
14
(1FFE CY7C025)
(1FFF CY7C025)
READ FFE
READ FFF
t
t
RC
RC
CY7C024/0241
CY7C025/0251
7C024–27
7C024–28
7C024–29
7C024–30