The S3C72K8/P72K8 is a single-chip CMOS microcontroller designed for high performance using Samsung's newest 4-bit CPU core, SAM48. It features two comparators, up to 320-dot LCD direct drive capability, 8-bit timer/counter, watchdog timer and serial I/O, making it an excellent design solution for a wide variety of applications which require LCD functions.
The Samsung S3C72K8 is a single‑chip CMOS microcontroller featuring a 4‑bit CPU core, two‑channel comparator, LCD driver, 8‑bit timer/counter, watchdog timer and serial I/O. It is offered in an 80‑pin QFP package with up to 27 configurable I/O pins and supports both mask‑ROM and one‑time‑programmable (OTP) versions (S3P72K8).
The document provides detailed specifications such as memory sizes, operating voltage and temperature ranges, clock sources, interrupt options, and pin‑level circuit diagrams, making it a comprehensive reference for designers integrating this microcontroller into LCD‑driven applications.
| RAM | 8K x 8‑bit |
|---|---|
| ROM | 1,024 x 4‑bit |
| I/O Pins | 27 pins (out of 80‑pin QFP) |
| Operating Temperature | -40 °C to 85 °C |
| Operating Voltage | 20 V to 55 V |
| Package | 80‑pin QFP |
| Main System Clock | 0.4 MHz – 6 MHz |
| Subsystem Clock | 32.768 kHz |
| Watch Timer Intervals | 0.5 s, 3.9 ms at 32.768 kHz |
The device operates from 20 V to 55 V.
Up to 27 of the 80‑pin QFP pins can be dedicated to I/O.
It includes 8 KB of 8‑bit RAM and 1 KB of 4‑bit ROM.
The microcontroller can operate from –40 °C up to 85 °C.