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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