This ic are Flash Memory type 8-bit high performance RISC architecture microcontrollers. Offering users the convenience of Flash Memory multi-programming features, the HT66F318 also include a wide range of functions and features. Other memory includes an area of RAM Data Memory as well as an area of true EEPROM memory for storage of non-volatile data such as serial numbers, calibration data etc.

CPU Features

Operating Voltage
fSYS=4MHz: 1.8V~5.5V
fSYS=8MHz: 2.0V~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
Oscillators
– External Crystal — HXT
– External 32.768kHz Crystal — LXT
– Internal RC — HIRC
– Internal 32kHz RC — LIRC
Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
Fully integrated internal 4/8/12MHz 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 ~ 4Kx16
RAM Data Memory: 128×8 ~ 192×8
True EEPROM Memory: 64×8
Watchdog Timer function
Up to 26 bidirectional I/O lines
Software controlled 4-SCOM lines LCD driver with 1/2 bias
Source current selectable
Two pin-shared external interrupts
Multiple Timer Module for time measure, input capture, compare match output, PWM output or single pulse output functions
One Comparator function – only for the HT66F318
UART and I2C Interfaces – only for the HT66F318
Dual Time-Base functions for generation of fixed time interrupt signals
8-channel 12-bit resolution A/D converter
Low voltage reset function
Low voltage detect function
Wide range of available package types
Flash program memory can be re-programmed up to 100,000 times
Flash program memory data retention > 10 years
True EEPROM data memory can be re-programmed up to 1,000,000 times
True EEPROM data memory data retention > 10 years