The M27C256B-12N1 is a 28-pin commercial OTP ROM IC from Stmicroelectronics, operating within a temperature range of 0 to 70 degrees Celsius. It features a supply voltage of 4.5 to 5.5 volts and a maximum supply current of 0.03 amps. The device has a memory capacity of 32,768 words and an access time of up to 120 nanoseconds. The IC is packaged in a plastic TSOP-28 package measuring 8 by 13.4 millimeters.
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Stmicroelectronics M27C256B-12N1 technical specifications.
| Max Operating Temperature | 70 |
| Number of Terminals | 28 |
| Min Operating Temperature | 0 |
| Terminal Position | DUAL |
| JEDEC Package Code | R-PDSO-G28 |
| Width | 8 |
| Length | 11.8 |
| 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 | 0.03 |
| Number of Words | 32768 |
| Number of Words Code | 32000 |
| Memory IC Type | OTP ROM |
| Parallel/Serial | PARALLEL |
| Standby Current-Max | 0.0002 |
| Access Time-Max | 120 |
| I/O Type | COMMON |
| RoHS | No |
| Eccn Code | EAR99 |
| Lead Free | No |
| HTS Code | 8542.32.00.71 |
| REACH | not_compliant |
| Military Spec | False |
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