General Description
The HT68F1x series of devices are Flash Memory I/O type 8-bit high performance RISC architecture
microcontrollers. Offering users the convenience of Flash Memory multi-programming features, these devices also include a wide range of functions and features. Other memory includes an area of RAM Data Memory for application program data storage.

FEATUREs
CPU Features
· Operating Voltage:
     fSYS= 8MHz: 2.2V~5.5V
     fSYS= 12MHz: 2.7V~5.5V
     fSYS= 20MHz: 4.5V~5.5V
· Up to 0.2ms instruction cycle with 20MHz system clock at VDD=5V
· Power down and wake-up functions to reduce power consumption
· Four oscillators:
     External Crystal -- HXT
     External RC -- ERC
     Internal RC -- HIRC
     Internal 32kHz RC -- LIRC
· Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
· Fully integrated internal 4MHz, 8MHz and 12MHz oscillator requires no external components
· All instructions executed in one or two instruction cycles
· Table read instructions
· 63 powerful instructions
· Up to 8-level subroutine nesting
· Bit manipulation instruction

Peripheral Features
· Flash Program Memory: 1K´14 ~ 4K´15
· RAM Data Memory: 64´8 ~ 192´8
· Watchdog Timer function
· Up to 26 bidirectional I/O lines
· Software controlled 4-SCOM lines LCD driver with 1/2 bias
· Multiple pin-shared external interrupts
· Multiple Timer Module for time measure, input capture, compare match output, PWM output or single pulse output function
· Single Time-Base function for generation of fixed time interrupt signal
· Low voltage reset function
· Low voltage detect function
· Wide range of available package types