| General information |
| Type | Microcontroller |
| Frequency (MHz) ? | 3.5 - 16 |
| Package | 44-pin plastic LCC |
| |
| Architecture / Microarchitecture |
| Manufacturing process | CHMOSIII technology |
| Data width | 8 bit |
| Physical memory | 68 KB (4 KB code and 64 KB data) |
| Features | On-circuit emulator (ONCE) mode |
| Low power features | - Idle mode
- Power down mode
|
| On-chip peripherals | - Four 8-bit I/O ports (32 I/O lines)
- Full-duplex serial port
- Two 16-bit timers/counters
- Oscillator and clock circuits
|
| On-chip RAM (bytes) | 128 |
| On-chip ROM | 4 KB masked ROM |
| |
| Electrical/Thermal parameters |
| V core (V) ? | 5 ± 20% |
| Min/Max operating temperature (°C) ? | 0 - 70 |
| Min/Max power dissipation (W) ? | 0.032 (Idle mode) / 0.16 |
| |
| Notes |
- Earlier versions included ROM protection features: program verification is disabled, external memory accesses are limited to 4 KB
- Later versions are 80C51BH microcontrollers with memory lock bit 1 set.
|
