The BS45F3833 is a device dedicated for use in ultrasonic atomiser 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. Compared with the heating nebulisation method, the ultrasonic method can result in 90% energy savings.

CPU Features

Operating Voltage
fSYS= 4MHz: 2.2V ~ 5.5V
fSYS= 8MHz: 2.2V ~ 5.5V
fSYS= 12MHz: 2.7V ~ 5.5V
Up to 0.33us 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
– PTM Dedicated 12MHz RC – PTMOSC
Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
Fully integrated oscillators require no external components
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: 2K×16
RAM Data Memory: 128×8
True EEPROM Memory: 32×8
Watchdog Timer function
18 bidirectional I/O lines
Two pin-shared external interrupts
Slew Rate Control for PB5 Port Output
Programmable I/O port source current for LED applications
Multiple Timer Modules for time measure, input capture, compare match output, PWM output function or single pulse output function
– 10-bit CTM ×3
– 10-bit STM ×1
– 10-bit PTM ×1
Over Current/Voltage Protection (OCVP) Function
Dual Time-Base functions for generation of fixed time interrupt signals
4 external channel 12-bit resolution A/D converter
4 touch key functions
Low voltage reset function
Low voltage detect function
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
Package Types: 16-pin NSOP, 20-pin NSOP