HT66F3126 Datasheet | Holtek Semiconductor

Features CPU Features - Operating Voltage - f SYS=4MHz: 1.8V~5.5V - f SYS=8MHz: 1.8V~5.5V - f SYS=12MHz: 2.7V~5.5V - f SYS=16MHz: 3.3V~5.5V - Up to 0.25μs instruction cycle with 16MHz system clock at VDD=5V - Power down and wake-up functions to reduce power consumption - Oscillator Types - Internal High Speed 8/12/16MHz RC - HIRC - Internal Low Speed 32k Hz RC - LIRC - Fully integrated internal oscillators require no external ponents - Multi-mode operation: FAST, SLOW, IDLE and SLEEP - All instructions executed in 1~2 instruction cycles - Table read instructions - 61 powerful instructions - 4-level subroutine nesting - Bit manipulation instruction Peripheral Features - Flash Program Memory: 1K×14 - Data Memory: 128×8 - True EEPROM Memory: 64×8 - Watchdog Timer function - 14 bidirectional I/O lines - 2 external interrupt lines shared with I/O pins - Programmable I/O port source current for LED applications - Two Timer Modules for time measure, input capture, pare match output, PWM output function or single pulse output function - Dual Time Base functions for generation of fixed time interrupt signals - 7 external channel 12-bit resolution A/D converter with internal reference voltage VVR - Low voltage reset function - Package types: 8-pin SOP, 16-pin NSOP Rev. 1.00 November 07, 2025 HT66F3126 A/D Flash MCU General Description The device is a Flash Memory A/D 8-bit high performance RISC architecture microcontroller, designed for applications that interface directly to analog...