General Description

The HT45F23A is a Flash Memory Tinypower A/D type 8-bit high performance RISC architecture

microcontrollers, designed especially for applications that interface directly to analog signals.

The HT45F23A device has a higher gain bandwidth making it more suitable for higher frequency

applications.

Features

CPU Features

•  Operating voltage:

– fSYS= 32.768kHz: 2.2V~5.5V

– fSYS= 910kHz: 2.2V~5.5V

– fSYS= 2MHz: 2.2V~5.5V

– fSYS= 4MHz: 2.2V~5.5V

– fSYS= 8MHz: 3.3V~5.5V

•  TinyPower technology for low power operation

•  Power down and wake-up functions to reduce power consumption

•  Oscillator types:

– External Crystal - HXT

– External 32.768kHz Crystal - LXT

– External RC - ERC

– Internal RC - HIRC

– Internal 32kHz RC - LIRC

•  Multi-mode operation: Normal, Slow, Idle and Sleep

•  Fully integrated internal 32kHz, 910kHz, 2MHz, 4MHz and 8MHz oscillator requires no external components

•  Externally supplied system clock option

•  All instructions executed in one or two machine Cycles

•  Table read instructions

•  61 or 63 powerful instructions

•  6-level subroutine nesting

•  Bit manipulation instruction

Peripheral Features

•  Flash Program Memory: 2K×15

•  RAM Data Memory: 128×8

•  EEPROM Data Memory: 64×8

•  Watchdog Timer function

•  Up to 22 bidirectional I/O lines

•  Software controlled 4-SCOM lines LCD COM driver with 1/2 bias

•  Multiple pin-shared external interrupts

•  Single 8-bit programmable Timer/Event Counter with overflow interrupt and Single 16-bit programmable Timer/Event Counter with overflow interrupt function

•  Dual Time-Base functions

•  Serial Interfaces Module - SIM for SPI or I2C

•  Dual Comparator functions

•  Dual Operational Amplifiers functions

•  Operational Amplifier output to internal two channel 12-bit ADC function

•  Up to 6 channel 12-bit ADC

•  Up to 2 channel 8-bit PWM

•  12-bit Audio DAC output

•  PFD/Buzzer for audio frequency generation

•  Internal 2.4V/3.3V LDO

•  Low voltage reset function

•  Low voltage detect function

•  16-pin NSOP, 20/24-pin SSOP package types