General Description

The HT45F23 and HT45F43 are Flash Memory Tinypower A/D type 8-bit high performance RISC architecture microcontrollers. The HT45F43 device has low power internal operational amplifiers making it more suitable for power sensitive products. The HT45F23 device has a higher gain bandwidth product than the HT45F43 at the expense of power consumption making it more suitable for higher frequency applications.

Features

CPU Features

• Operating voltage:

fSYS= 32768Hz: 2.2V~5.5V

fSYS= 4MHz: 2.2V~5.5V

fSYS= 8MHz: 3.3V~5.5V

fSYS= 12MHz: 4.5V~5.5V

• Up to 0.33μs instruction cycle with 12MHz system clock at VDD= 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

• 63 powerful instructions

• 6-level subroutine nesting

• Bit manipulation instruction

Peripheral Features

• Flash Program Memory: 2Kx15

• RAM Data Memory: 128x8

• EEPROM Data Memory: 64x8

• 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 (HT45F23/HT45F43) with tiny power consumption (HT45F43 only)

• Dual Operational Amplifiers functions (HT45F23/HT45F43) with tiny power consumption (HT45F43 only)

• 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