Key facts
- Brand
- Holtek
- Model
- HT46R22
- Industry
- Industrial
- Documents
- 9
- Languages
- ZH · EN
- Last added
- 2026-10-15
Start here
Holtek HT46R47/HT46R22/HT46R23/HT46R24 A/D Microcontroller User Manual
This manual provides detailed information on the HT46R47, HT46R22, HT46R23 and HT46R24 A/D‑type microcontrollers, including hardware structure, system block diagram, pin assignments, and the full register set. It also describes the integrated multi‑channel A/D converter, PWM modules, I²C interface, timers, interrupt system, low‑voltage reset and power‑down features.
The third part of the document introduces Holtek’s development environment, including the HT‑IDE IDE, HT‑ICE emulator and OTP programming tools, with step‑by‑step instructions for creating projects, compiling code and programming the devices. This manual is written in Chinese.
Holtek HT46R22 specifications
| Operating voltage (4 MHz) | 2.2 V – 5.5 V |
|---|---|
| Operating voltage (8 MHz) | 4.5 V – 5.5 V |
| Bidirectional I/O lines | 19 |
| Program memory ROM | 2048 × 14 bits |
| Data memory RAM | 64 × 8 bits |
| PWM output | 1‑channel (6+2)/(7+1)-bit, shared with I/O |
| Package | 24‑pin SKDIP/SOP |
| Watchdog timer | Included |
| On‑chip oscillator | Crystal and RC oscillator |
All Holtek HT46R22 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
- Holtek HT46R47/HT46R22/HT46R23/HT46R24 A/D Microcontroller User Manual 171 p
- HOLTEK SEMICONDUCTO HT46R47 HT46R22 HT46R23 HT46R24 A/D microcontroller Manual
- HOLTEK HT46R22/46C22 microcontroller Manual
- HOLTEK HT46R22/46C22 A/D Type 8-Bit microcontroller Manual
- HOLTEK HT46R22/HT46C22 A/D Type 8-Bit microcontroller Manual
- Holtek HT46R47/HT46R22/HT46R23/HT46R24 A/D Microcontroller User Manual 185 p
How to use the product for one specific task, with worked examples.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the main controller chip used in this design?
The Holtek HT46R22 A/D type single-chip microcomputer.
From: Holtek HT46R22 Induction Cooker Power Control Design Application Note
What is the maximum power output deviation for this induction cooker design?
The design keeps the large power conversion error within 50W.
From: Holtek HT46R22 Induction Cooker Power Control Design Application Note
What is the operating voltage range for the HT46R22/HT46C22?
The device operates from 2.2 V to 5.5 V at 4 MHz and from 4.5 V to 5.5 V at 8 MHz.
How many bidirectional I/O lines does the HT46R22/HT46C22 provide?
It provides 19 bidirectional I/O lines.
What is the operating voltage range for the HT46R series?
The devices operate from 2.2 V to 5.5 V at 4 MHz and from 3.3 V to 5.5 V at 8 MHz.
From: Holtek HT46R47/HT46R22/HT46R23/HT46R24 A/D Microcontroller User Manual
How much power does the microcontroller consume at 5 V and 4 MHz?
Typical power consumption is 2 mA under those conditions.
From: Holtek HT46R47/HT46R22/HT46R23/HT46R24 A/D Microcontroller User Manual