The S3C7281 is a SAM48 core-based 4-bit CMOS single-chip microcontroller. It is built around the SAM48 core CPU and contains ROM, RAM, 14 I/O lines, buzzer and inverted buzzer output, and LCD driver/controller with an up-to-64-dot. The S3C7281 can be used for dedicated control functions in a variety of applications, and is especially designed for LCD general purpose.
The S3C7281 is a SAM48 core‑based 4‑bit CMOS single‑chip microcontroller with 1024 × 8‑bit program memory, 64 × 4‑bit data memory, 14 I/O pins, basic timers, watchdog, and an LCD driver capable of driving 16 segments with 4 common pins. It operates from 1.8 V to 5.5 V and supports various power‑down modes.
The document includes detailed pin assignments, pin circuit diagrams, and mechanical data for the 32‑SOP‑450A package, including dimensions and pad layout. It also lists electrical characteristics such as operating temperature, power consumption, and oscillator options.
| Program memory | 1024 × 8 bit |
|---|---|
| Data memory | 64 × 4 bit |
| I/O pins | 14 |
| Operating voltage range | 1.8 V to 5.5 V |
| Operating temperature | -40 °C to 85 °C |
| Package type | 32‑SOP‑450A |
| LCD segments | 16 segments, 4 common pins |
| Main mode power consumption | 0.5 mA at 1 MHz, 3 V |
The S3C7281 operates from 1.8 V to 5.5 V.
It provides 14 I/O pins.
The device is supplied in a 32‑SOP‑450A package.
The microcontroller has 1024 × 8‑bit program memory.