AT89C51-12LM/883 8-Bit Microcontroller-Microcomputer - 2 16-bit timers
From Atmel Corporation
| Clock Frequency - Max. (Hz) | 12M |
| Clock Frequency - Min. (Hz) | 0 |
| Max Instruction Length (bits) | 24 |
| Military | Y |
| Min Instruction Length (bits) | 8 |
| Number of Interrupt Lines | 2 |
| On-Chip RAM (Bytes) | 128 |
| On-Chip ROM (bytes) | 4k |
| Package | QCC-J |
| Pins | 44 |
| Technology | CMOS |
| Vsup Nom.(V) Supply Voltage | 5.0 |
