The HT66F0176 device is a Flash Memory A/D type 8-bit high performance RISC architecture microcontroller. Offering users the convenience of Flash Memory multi-programming features, the device also includes a wide range of functions and features. Other memory includes an area of RAM Data Memory as well as an area of true true EEPROM memory for storage of non-volatile data such as serial numbers, calibratuib data, etc.

CPU Features

Operating voltage
fSYS= 8MHz: 2.2V~5.5V
fSYS=12MHz: 2.7V~5.5V
fSYS=16MHz: 3.3V~5.5V
Up to 0.25us instruction cycle with 16MHz system clock at VDD=5V
Power down and wake-up functions to reduce power consumption
Oscillator types:
– External High Speed Crystal — HXT
– External 32.768kHz Crystal — LXT
– Internal High Speed RC — HIRC
– Internal Low Speed 32kHz RC — LIRC
Multi-mode operation: FAST, SLOW, IDLE and SLEEP
Fully integrated internal 8/12/16MHz oscillator requires no external components
All instructions executed in one or two instruction cycles
Table read instructions
63 powerful instructions
8-level subroutine nesting
Bit manipulation instruction

Peripheral Features

Flash Program Memory: 2Kx16
RAM Data Memory: 128×8
True EEPROM Memory: 64×8
Watchdog Timer function
22 bidirectional I/O lines
Two pin-shared external interrupts
Dual Timer Modules for time measurement, compare match output or PWM output function
Serial Interface Module — SIM for SPI or I2C
Software controlled 6-SCOM/SSEG and 14-SSEG lines LCD driver with 1/3 bias
Programmable I/O port source current for LED applications
Dual Time-Base functions for generation of fixed time interrupt signals
8-external channel 12-bit resolution A/D converter
Fully-duplex Universal Asynchronous Receiver and Transmitter Interface — UART
Low voltage reset function
Low voltage detect function
Package types: 16/20-pin NSOP, 24-pin SOP/SSOP