The document introduces the features and characteristics of HT48RA5/HT48CA5 remote control eight-bit microcontrollers, including working voltage, number of input/output ports, timers/counters, memory capacity, etc.
The HT48RA5/HT48CA5 series is a high‑performance, low‑power 8‑bit RISC microcontroller designed for remote‑control and multi‑I/O applications such as industrial control, consumer products and subsystem controllers. It offers programmable timers, watchdog, low‑voltage reset, and a rich instruction set for efficient code execution.
The device is supplied in a 28‑pin SOP/SSOP package and provides up to 23 bidirectional I/O pins, 40 KB of program memory, 224 bytes of RAM, and built‑in crystal or RC oscillator options. Detailed electrical characteristics, pin descriptions, and register maps are included for hardware designers and firmware developers. This manual is written in Chinese.
| Operating voltage | 2.0 V – 5.5 V |
|---|---|
| I/O pins | Maximum 23 bidirectional I/O pins |
| Program memory | 40 K ×16 bit ROM (8 K ×16 bit ×5 banks) |
| Data memory (RAM) | 224 ×8 bit |
| Package | 28‑pin SOP/SSOP (209 mil) |
| Oscillator | Built‑in crystal and RC oscillator circuits |
| Watchdog timer | Integrated watchdog timer |
It operates from 2.0 V to 5.5 V.
The device can have up to 23 bidirectional I/O pins.
It contains 40 K ×16 bit ROM organized as 8 K ×16 bit ×5 banks.
It is offered in a 28‑pin SOP/SSOP (209 mil) package.