HT45R37 Datasheet | Holtek Semiconductor

Features - Operating voltage: - Dual Serial Interfaces: SPI and I2C - 4 operating modes: normal, slow, idle and sleep - 6-level subroutine nesting - 6-channel 12-bit resolution A/D converter - 2-channel 12-bit PWM output shared with I/O line - Low voltage reset function - 2.1V, 3.15V, 4.2V - Low voltage detect function - 2.2V, 3.3V, 4.4V - Bit manipulation instruction - 15-Bit table read instructions - 63 powerful instructions - Up to 0.33ms instruction cycle with 12MHz system f SYS=32768Hz: 2.2V~5.5V f SYS=4MHz: 2.2V~5.5V f SYS=8MHz: 3.0V~5.5V f SYS=12MHz: 4.5V~5.5V - OTP Program Memory: 4K´15 - RAM Data Memory: 160´8 - 27 bidirectional I/O lines - Three external interrupt input shared with I/O lines - Two 8-bit programmable Timer/Event Counter with overflow interrupt and 7-stage prescaler - External C/R to F converter - 16-Channel Capacitor/Resistor sensor inputs - Integrated Crystal, IRC, ERC and RTC oscillator - Fully integrated internal RC oscillator available with clock at VDD=5V - All instructions executed in one or two machine cycles - Idle/Sleep mode and wake-up functions to reduce three frequencies: 4MHz, 8MHz or 12MHz - Watchdog Timer function - LIRC or RTC oscillator function for watchdog timer - PFD and Buzzer for audio frequency generation power consumption - Time-Base and RTC interrupt - 20-pin DIP/SOP, 24/28-pin SKDIP/SOP/SSOP and 32-pin QFN packages General Description The HT45R37 is a Tiny Power TM C/R to F Type 8-bit high performance RISC architecture microcontroller. As a C/R .. to F type of MCU, the device can interface to 16 external C or R type sensors and convert their values to a frequency value for processing. In addition its internal A/D converter allows the device to interface directly to analog signals and its integrated dual channel Pulse Width Modulators allows control of external motors, LEDs etc. With their fully integrated SPI and I2C functions, designers are provided with a means of easy munication with external peripheral...