This document introduces the features and characteristics of the HT49RV9/HT49CV9 A/D+VFD 8-bit microcontroller by Holtek, including the working voltage range, number of I/O ports, timer/counter functions, VFD driver, memory capacity, etc.
This manual provides a complete description of the HT49RV9/HT49CV9 8‑bit microcontroller, including its architecture, instruction set, and typical applications such as DVD, VCD and audio devices. It also contains detailed pin assignments, electrical characteristics, and timing diagrams for designers.
The document includes package information, power‑up sequences, and programming notes for both A/D conversion and VFD display functions, helping engineers integrate the device into their designs. This manual is written in Japanese.
| System clock frequency (4 MHz) | 4 MHz |
|---|---|
| System clock frequency (8 MHz) | 8 MHz |
| A/D converter resolution | 10‑bit, 8 channels |
| PWM output | 4 channels, 8‑bit |
| Package | 100‑pin QFP (14 mm × 20 mm) |
It is supplied in a 100‑pin QFP package measuring 14 mm by 20 mm.
The device operates at 4 MHz with a supply of 2.2 V‑5.5 V, or at 8 MHz with a supply of 3.3 V‑5.5 V.
The microcontroller provides four independent PWM channels, each 8‑bit wide.
It features a 10‑bit A/D converter with up to eight input channels.