The S3C72B5/C72B7/C72B9 is a single-chip CMOS microcontroller designed for high performance. It features Samsung's newest 4-bit CPU core, LCD direct drive capability, timer/counter, and serial I/O. It is suitable for a wide variety of applications that require LCD functions.
The Samsung S3C72B5/C72B7/C72B9/P72B9 series are single‑chip CMOS microcontrollers built around the SAM47 4‑bit CPU core. They provide up to 1,280‑dot LCD direct‑drive capability, a range of timers, serial I/O, and extensive I/O pin options for flexible embedded designs.
The handbook details the memory architecture, pin configuration, power‑down modes, clock sources, and electrical characteristics, offering designers the data needed to integrate these devices into a variety of applications that require LCD functions and low‑power operation.
| RAM | 3,584 × 4‑bit |
|---|---|
| ROM | 16,384 / 24,576 / 32,768 × 8‑bit |
| I/O Pins | 51 |
| Operating Voltage Range | 5.5 V to 18 V |
| Operating Temperature | 40 °C to 85 °C |
| Package | 128‑pin QFP |
| Main System Clock Frequency | 0.4 MHz to 6 MHz |
| Subsystem Clock Frequency | 32.768 kHz |
| LCD Direct‑Drive Capability | Up to 1,280‑dot LCD |
The device provides 51 I/O pins, of which 47 are configurable and 4 are input‑only.
They operate from 5.5 V up to 18 V.
It can directly drive LCD panels with up to 1,280 dots.
Two power‑down modes are supported: idle mode (CPU clock stops) and stop mode (main system clock stops).