The M44C260/M48C260 is a family of 4-bit single chip microcontrollers from Temic Germany, M44C260 is a ROM type and M48C260 is an EEPROM programmable type, the main features include a 4-bit HARVARD architecture, 1µs instruction cycle, 4K 8-bit application program memory, 256 4-bit RAM, 16 8-bit EEPROM, 16 bidirectional I/O, 8 hard and software interrupt levels, 2 8-bit multifunction timers/counters and 32kHz on-chip oscillator.
The document describes the TEMIC M44C260 and M48C260, which are members of the MARC4 family of 4-bit single-chip microcontrollers. The M48C260 is a user-programmable version containing EEPROM memory, while the M44C260 contains ROM. Both devices feature a Harvard architecture with separate program and data memories, on-chip clock generation, and support for high-level qFORTH programming.
| Architecture | 4-bit HARVARD architecture |
|---|---|
| Supply Voltage | 2.4 to 6.2 V |
| Program Memory Size | 4 Kbytes |
| RAM Capacity | 256 x 4-bit |
| EEPROM Size (M48C260) | 16 x 8-bit |
| Oscillator Frequency | 32 kHz |
The M48C260 contains an EEPROM program memory instead of a ROM, making it user programmable.
It supports high-level programming in qFORTH.