HOLTEK
HT46R23
8-Bit A/D Type OTP MCU
 Features
Operating voltage: 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 8-level subroutine nesting
23 bidirectional I/O lines (max.) 8 channels 10-bit resolution (9-bit accuracy)
1 interrupt input shared with an I/O line ---A/D converter
16-bit programmable timer/event counter with 2-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 15-bit table read instruction
4096x15 program memory PROM 63 powerful instructions
192x8 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 24/28-pin SKDIP/SOP package
 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.