Key facts
- Brand
- Holtek
- Model
- HT48RA0-3
- Category
- Other Electronics
- Industry
- Electronics
- Documents
- 2
- Languages
- ZH · EN
- Last added
- 2011-09-28
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Holtek HT48RA0-3/HT48CA0-3 Microcontroller User Manual
The HT48RA0-3 and HT48CA0-3 are 8‑bit high‑performance microcontrollers with dual‑direction I/O, low power consumption, built‑in timer, watchdog and power‑on‑reset functions. They are supplied in a 20‑pin SSOP package and are suitable for remote‑control and other embedded applications.
The manual provides detailed information on pin descriptions, electrical characteristics, instruction set, programming procedures, memory organization, stack operation, and special function registers. It also includes package dimensions and contact information for Holtek worldwide.
Holtek HT48RA0-3 specifications
| Operating voltage (VDD) | 2.0 V – 3.6 V |
|---|---|
| System clock frequency | 4 MHz ±3% |
| Program memory size | 1 KB ×14 bits |
| Data memory size | 32 ×8 bits RAM |
| I/O ports | 10 bidirectional I/O pins |
| Package type | 20‑pin SSOP (150 mil) |
All Holtek HT48RA0-3 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the operating voltage range of the HT48RA0-3/HT48CA0-3?
The device operates from 2.0 V to 3.6 V.
How many I/O pins are available on the HT48RA0-3/HT48CA0-3?
It provides ten bidirectional I/O pins, with additional specialized pins for carrier output and wake‑up functions.
What is the operating voltage range for the HT48RA0-3/HT48CA0-3?
The device operates with a supply voltage (Vpp) between 2.0 V and 3.6 V.
From: Holtek HT48RA0-3/HT48CA0-3 Microcontroller User Manual
How much current can the device draw at maximum?
The maximum supply current is specified as 100 mA.
From: Holtek HT48RA0-3/HT48CA0-3 Microcontroller User Manual