The HT45F0027 is a TinyPowerTM A/D type 8-bit high performance RISC architecture microcontroller, designed especially for applications that interface directly to analog signal. The device includes an integrated multi-channel Analog to Digital Converter and low power internal operational amplifiers.

CPU Features

Operating Voltage
– fSYS=32kHz: 2.2V~5.5V
– fSYS=1MHz: 2.2V~5.5V
– fSYS=2MHz: 2.2V~5.5V
– fSYS=4MHz: 2.2V~5.5V
– fSYS=8MHz: 3.3V~5.5V
TinyPowerTM technology for low power operation
Power down and wake-up functions to reduce power consumption
Oscillators
– Internal RC — HIRC
– Internal 32kHz RC — LIRC
Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
Fully integrated internal 1/2/4/8MHz oscillator requires no external components
All instructions executed in one or two instruction cycles
Table read instructions
63 powerful instructions
6-level subroutine nesting
Bit manipulation instruction

Peripheral Features

Flash Program Memory: 2Kx16
RAM Data Memory: 256×8
EEPROM Memory: 32×8
Watchdog Timer function
9 bidirectional I/O lines
Single pin-shared external interrupt
Two 8-bit programmable Timer/Event Counters with overflow interrupt function
6-channel 12-bit resolution A/D converter
A/D converter auto enable function
A/D converter lower/upper limit preset
Serial Interfaces Module – SIM for SPI or I2C
Dual Operational Amplifiers functions
LDO function
Internal Temperature Sensor function
Low Voltage Reset function
Low Voltage Detect function
Package type: 16-pin NSOP/QFN