The HT46R004 is an 8-bit high performance RISC architecture microcontroller device specifically designed for a wide range of applications. The advantages of low power consumption, I/O flexibility, timer functions, HALT and wake-up functions, watchdog timer, as well as low cost, enhance the versatility of the device to suit for a wide range of the I/O and A/D control application possibilities such as industrial control, consumer products and subsystem controllers, etc.

CPU Features

Operating voltage:
fSYS= 8MHz: 2.3V~5.5V
Up to 0.5us instruction cycle with 8MHz system clock at VDD=5V
Power down and wake-up functions to reduce power consumption
Two oscillators:
Internal high speed RC — HIRC
Internal low speed RC — LIRC
Fully integrated internal 8MHz oscillator requires no external components in HT46R004
All instructions executed in one or two instruction cycles
Table read instruction
63 powerful instructions
4-level subroutine nesting
Bit manipulation instruction

Peripheral Features

Program Memory: 2Kx14
RAM Data Memory: 96×8
Watchdog Timer function
Up to 18 bidirectional I/O lines
8 channel 12-bit ADC
1 channel 8-bit PWM
External interrupt pin shared with I/O pin
One 8-bit programmable Timer/Event Counter with overflow interrupt and prescaler
Low voltage reset function
Package types: 16-pin DIP/NSOP and 20-pin DIP/SOP in HT46R004
Programmable Frequency Divider — PFD