CY7C276-25HC Cypress Semiconductor Corp, CY7C276-25HC Datasheet - Page 5

• Manufacturer Part Number: CY7C276-25HC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C276-25HC

• Density: 256Kb
• Access Time (max): 25ns
• Interface Type: Parallel
• Package Type: LCC
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Mounting: Surface Mount
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Not Compliant

Switching Waveforms
Architecture Configuration Bits
The CY7C276 has four user-programmable options in addition
to the reprogrammable data array. For detailed programming
information contact your local Cypress representative.
The programmable options determine the active polarity for
the three chip selects (CS
bits are programmed with a 0 the inputs are active LOW. When
these control bits are programmed with a 1 the inputs are
active HIGH.
Document #: 38-04004 Rev. *C
ACTIVE HIGH
Read Operation Timing Diagram
Chip Select and Output Enable Timing Diagrams
Note:
5.
CS
D
A
CS
A
D
13
15
2
15
13
2
−CS
− A
−D
–
− A
−D
OE
CS
0
0
0
0
0
0
, OE assumed active.
INACTIVE
2
–CS
t
CSOV
0
) and OE. When these control
[5]
ACTIVE
t
AA
VALID
ADDR A
DATA A
t
OEZ
Programming Information
Programming support is available from Cypress as well as
from a number of third-party software vendors. For detailed
programming information, including a listing of software
packages, please see the PROM Programming Information
located at the end of this section. Programming algorithms can
be obtained from any Cypress representative.
HIGH Z
t
OEV
ADDR B
t
AA
VALID
INACTIVE
t
CSOZ
DATA B
CY7C276
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