This document describes the features and characteristics of the HT46R53A/HT46R54A A/D 8-bit OTP microcontroller, including low power consumption full static CMOS design, operating voltage range, program memory and data memory capacity, number of A/D converter channels, and external interrupt input shared with I/O port.
The HT46R53A and HT46R54A are 8‑bit high‑performance OTP microcontrollers with an integrated 12‑bit, 8‑channel A/D converter. They offer low power consumption, multiple I/O pins, timers, PWM, and wake‑up functions, making them suitable for sensor interfaces, motor control, and other embedded applications.
The manual includes a complete overview of the device architecture, pin‑out tables, electrical characteristics, memory organization, program counter operation, and interrupt handling. It also provides package dimensions, ordering information, and contact details for Holtek worldwide. This manual is written in Chinese.
| Operating Voltage | 2.2 V to 5.5 V |
|---|---|
| Package | 28‑pin SKDIP/SOP |
| ADC Resolution | 12‑bit, 8 channels |
| RAM Size | 192 × 8 bits (HT46R53A) / 280 × 8 bits (HT46R54A) |
| Power Consumption (typical) | 500 mW |
| I/O Pins | 22 bidirectional I/O pins |
| External Interrupt Pins | 1 external interrupt pin |
The device operates from 2.2 V up to 5.5 V.
It provides 22 bidirectional I/O pins.
Yes, it includes a 12‑bit A/D converter with 8 channels.
The devices are supplied in a 28‑pin SKDIP/SOP package.