Departments
Integrated CircuitsNeed Help
Home >
Integrated Circuits >
Memory >
EEPROM
28C256 256K Parallel EEPROM Datasheet
Photograph
Product Details
- Fast Read Access Time - 150 ns
- Fast Byte Write - 200µs or 1 ms
- Self-Timed Byte Write Cycle
- Direct Microprocessor Control
- Low Power - 30mA Active Current, 100µA CMOS Standby Current
- High Reliability - Endurance 1,000 cycles, Data Retention: 10 Years
- 5V Supply
- CMOS & TTL Compatible Inputs and Outputs
Pin Layout
Pin Description
| Pin Number | Description |
|---|---|
| 1 | A14 - Address Input |
| 2 | A12 - Address Input |
| 3 | A7 - Address Input |
| 4 | A6 - Address Input |
| 5 | A5 - Address Input |
| 6 | A4 - Address Input |
| 7 | A3 - Address Input |
| 8 | A2 - Address Input |
| 9 | A1 - Address Input |
| 10 | A0 - Address Input |
| 11 | I/O0 - Data Input/Output 0 |
| 12 | I/O1 - Data Input/Output 1 |
| 13 | I/O2 - Data Input/Output 2 |
| 14 | GND - Ground |
| 15 | I/O3 - Data Input/Output 3 |
| 16 | I/O4 - Data Input/Output 4 |
| 17 | I/O5 - Data Input/Output 5 |
| 18 | I/O6 - Data Input/Output 6 |
| 19 | I/O7 - Data Input/Output 7 |
| 20 | CE - Chip Enable |
| 21 | A10 - Address Input |
| 22 | OE - Output Enable |
| 23 | A11 - Address Input |
| 24 | A9 - Address Input |
| 25 | A8 - Address Input |
| 26 | A13 - Address Input |
| 27 | WR - Write Enable |
| 28 | Vcc - Positive Power Supply |
Dimensional Drawing
Technical Data
