The S3C72K8 single-chip CMOS microcontroller is designed for high performance with Samsung's newest 4-bit CPU core, SAM48. It offers features such as a two-channel comparator, up to 320-dot LCD direct drive capability, 8-bit timer/counter, watchdog timer, and serial I/O, making it suitable for various applications requiring LCD functions. The OTP version, S3P72K8, has a 8KB one-time programmable EPROM.
The S3C72K8 is a single‑chip CMOS microcontroller featuring Samsung's 4‑bit SAM48 CPU core, two‑channel comparator, LCD driver, 8‑bit timer/counter, watchdog timer, and serial I/O. It is offered in a standard 80‑pin QFP package with up to 27 I/O pins dedicated for user applications.
The handbook details memory capacities, pin functions, timing characteristics, operating voltage and temperature ranges, and includes block diagrams, pin‑assignment tables, and OTP programming information for the S3P72K8 variant.
| RAM | 8K x 8‑bit |
|---|---|
| ROM | 1,024 x 4‑bit |
| I/O Pins | 27 pins (out of 80‑pin QFP) |
| LCD Segments | 40 segments, 8 common terminals |
| Timer Interval Generation | 0.5 s, 3.9 ms at 32.768 kHz |
| Operating Temperature | -40 °C to 85 °C |
| Operating Voltage | 20 V to 55 V |
| Package | 80‑pin QFP |
| System Clock Frequency | 0.4 MHz – 6 MHz |
| Subsystem Clock Frequency | 32.768 kHz |
The device operates from 20 V to 55 V.
Up to 27 pins of the 80‑pin QFP package can be dedicated to I/O.
It is supplied in an 80‑pin QFP package.
The system clock can use a crystal, ceramic, or external RC oscillator.