This document describes the features and characteristics of the HT48RA0-2/ HT48CA0-2 remote control eight-bit microcontroller, including working voltage, number of input/output ports, number of Schmitt trigger input ports, carrier output port, crystal and RC oscillation circuit, watchdog timer, program memory, and data memory.
The document provides a complete overview of the HT48RA0-2 and HT48CA0-2 remote‑control 8‑bit microcontrollers, including block diagrams, pin assignments, and functional descriptions. It details the internal architecture, instruction set timing, and built‑in peripherals such as watchdog timer, oscillator options, and power‑on reset.
Additional sections cover the DC and AC electrical characteristics, memory organization, status registers, and packaging dimensions. The specification sheet also lists recommended operating conditions, power consumption limits, and mechanical drawing data for the 20‑pin SSOP package. This manual is written in Chinese.
| 工作电压 | 2.0 V ~ 3.6 V |
|---|---|
| I/O 引脚数 | 10 双向 I/O + 4 斯密特触发输入 |
| 载波输出口 | 1/2 或 1/3 占空比 |
| 程序存储器 | 1 K × 14 位 EPROM |
| 数据存储器 | 32 × 8 位 RAM |
| 系统时钟 | 4 MHz |
| 总功耗 | 500 mW |
| 封装 | 20‑pin SSOP (150 mil) |
The device operates from 2.0 V to 3.6 V.
It provides ten bidirectional I/O pins, plus four Schmitt‑trigger input pins.
The chip includes a 1 K × 14‑bit EPROM program memory and a 32 × 8‑bit RAM data memory.
The maximum power consumption is 500 mW.