Holtek Semiconductor HT45F3820
The HT45F3820 is a device dedicated for use in ultrasonic nebuliser applications. The application principle for ultrasonic nebulisers is to use electronic high-frequency oscillation and ceramic nebulising chip high-frequency resonance to break up the liquid water molecules thus generating a fine mist without requiring heating or any chemical substances. The device is a Flash Memory type 8-bit high performance RISC architecture microcontroller containing special internal circuitry for ultrasonic nebuliser applications.FEATURES
CPUFEATURES
● Operating Voltage: ♦♦ fSYS=12MHz: 2.7V ~ 5.5V ♦♦ fSYS=32kHz: 2.2V ~ 5.5V● Up to 0.33μs instruction cycle with 12MHz system clock at VDD=5V
● Power down and wake-up functions to reduce power consumption
● Oscillators: ♦♦ Internal High Speed RC – HIRC ♦♦ Internal Low Speed 32kHz RC – LIRC
● Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
● All instructions executed in one or two instruction cycles
● Table read instructions
● 63 powerful instructions
● 4-level subroutine nesting
● Bit manipulation instruction Peripheral
FEATURES
● Flash Program Memory: 1K×16● RAM Data Memory: 64×8
● True EEPROM Memory: 32×8
● Watchdog Timer function
● 8 bidirectional I/O lines
● Two pin-shared external interrupts
● Multiple Timer Modules for time measure, input capture, compare match output, PWM output function or single pulse output function ♦♦ 10-bit PTM × 1 ♦♦ 10-bit STM × 1
● Over Current/Voltage Protection (OCVP) Function with interrupt
● Dual Time-Base functions for gene...