The AT27C256R-45PC is a 28-pin DIP commercial-grade one-time programmable ROM IC with a maximum operating temperature of 70 degrees Celsius. It has a supply voltage range of 4.5 to 5.5 volts and a maximum supply current of 0.02 amps. The device features 32,768 words of memory and a maximum access time of 45 nanoseconds. It is available in a 28-pin DIP package with a length of 36.95 millimeters and a width of 15.24 millimeters.
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Atmel AT27C256R-45PC technical specifications.
| Max Operating Temperature | 70 |
| Number of Terminals | 28 |
| Min Operating Temperature | 0 |
| Terminal Position | DUAL |
| JEDEC Package Code | R-PDIP-T28 |
| Width | 15.24 |
| Length | 36.95 |
| Pin Count | 28 |
| Number of Functions | 1 |
| Temperature Grade | COMMERCIAL |
| Supply Voltage-Nom (Vsup) | 5 |
| Supply Voltage-Max (Vsup) | 5.5 |
| Supply Voltage-Min (Vsup) | 4.5 |
| Supply Current-Max | 0.02 |
| Number of Words | 32768 |
| Number of Words Code | 32000 |
| Memory IC Type | OTP ROM |
| Parallel/Serial | PARALLEL |
| Standby Current-Max | 0.0001 |
| Access Time-Max | 45 |
| I/O Type | COMMON |
| RoHS | No |
| Eccn Code | EAR99 |
| HTS Code | 8542.32.00.71 |
| REACH | unknown |
| Military Spec | False |
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