The HT45R36 is an 8-bit high-performance reduced instruction set microcontroller, specially designed for economical multi-input and output control products. Low power consumption, flexible I/O functions, counters, oscillator type selection, pause and wake-up functions, and watchdog timer functions make this multi-functional chip widely used in industrial control, consumer products, and subsystem controllers.
The HT45R36 is an 8‑bit high‑performance reduced‑instruction‑set microcontroller designed for cost‑effective multi‑I/O control applications. It offers low power consumption, flexible I/O, timers, watchdog, and sleep/ wake functions.
This manual covers the device overview, pin description, absolute maximum ratings, DC and AC electrical characteristics, system functions, program memory layout, stack register operation, and mechanical dimensions. It also includes typical application notes and reference tables. This manual is written in Chinese.
| Operating voltage (4 MHz) | 2.2 V ~ 5.5 V |
|---|---|
| Operating voltage (8 MHz) | 3.3 V ~ 5.5 V |
| Bidirectional I/O pins | 25 |
| External interrupt pins | 2 (shared with I/O pins) |
| Programmable timer/counter | 8‑bit with overflow interrupt |
| Data RAM | 120 × 8 bits |
| Program ROM | 2048 × 14 bits |
| Package | 44/52‑pin QFP |
| Typical operating current (3 V, no load) | 1.2 mA |
The device operates from 2.2 V to 5.5 V at 4 MHz and from 3.3 V to 5.5 V at 8 MHz.
It provides 25 bidirectional I/O pins.
The microcontroller is offered in a 44‑pin or 52‑pin QFP package.
The program memory is 2048 words of 14 bits each.