HOLTEK
HT46R22
8-Bit A/D Type OTP MCU
 Features
Operating voltag Up to 0.5us instruction cycle with 8MHz
---fSYS=4MHz: 3.3V~5.5V ---system clock at VDD=5V
---fSYS=8MHz: 4.5V~5.5V 6-level subroutine nesting
19 bidirectional I/O lines (max.) 8 channels 9-bit resolution (8-bit accuracy)A/D
1 interrupt input shared with an I/O line converter
8-bit programmable timer/event counter with 1-channel (6+2)/(7+1)-bit PWM output
---overflow interrupt and 7-stage prescaler ---shared with two I/O lines
On-chip crystal and RC oscillator Bit manipulation instruction
Watchdog Timer 14-bit table read instruction
2048x14 program memory PROM 63 powerful instructions
64x8 data memory RAM All instructions in one or two machine cycles
Supports PFD for sound generation Low voltage reset function
HALT function and wake-up feature reduce I2C BUS (slave mode)
---power consumption 24-pin SKDIP/SOP packages
 General Description
The device is an 8-bit high performance RISC-like microcontroller designed for multiple I/O product
applications. It is particularly suitable for use in products such as washing machine controllers and
home appliances. A HALT feature is included to reduce power consumption.The program and
option memories can be electrically programmed, making this microcontroller suitable for product
development applications.