HT45R22E Datasheet | Holtek Semiconductor

Features CPU Features - Operating voltage: - Table read instructions - 63 powerful instructions - 4-level subroutine nesting - Bit manipulation instruction - Low voltage reset function - 20/24-pin SOP package types f SYS= 4MHz: 2.2V~3.6V - Program Memory: 4K´15 - Data Memory: 128´8 - Embedded 1024´8 EEPROM - Up to 1ms instruction cycle with 4MHz system clock at VDD= 3V - Idle/Sleep mode and wake-up functions to reduce Peripheral Features - Up to 22 bidirectional I/O lines - Software controlled 4-S lines LCD driver power consumption - Oscillator types: with 1/2 bias - External interrupt input shared with an I/O line - Two 8-bit programmable Timer/Event Counter with External high freuency Crystal -- HXT External RC -- ERC Internal high frequency RC -- HIRC External low frequency crystal -- LXT Internal low frequency RC -- LIRC - Four operational modes: Normal, Slow, Idle, Sleep - Fully integrated internal 4095k Hz oscillator requires overflow interrupt and prescaler - Time-Base function - Programmable Frequency Divider - PFD shared with I/O line - Two integrated operational amplifiers with interrupt no external ponents - Watchdog Timer function - LIRC oscillator function for watchdog timer - All instructions executed in one or two instruction function - one with programmable gain control - Single parator with interrupt and low power consumption cycles General Description The device is an 8-bit high performance, RISC architecture microcontrollers specifically designed for operational amplifier applications. The usual Holtek microcontroller features of low power consumption, I/O flexibility, timer functions, oscillator options, internal parator, internal operational amplifiers, power down and wake-up functions, watchdog timer and low voltage reset, bine to provide the device with a wide range of functional options while still maintaining a high level of cost effectiveness. The fully integrated system oscillator HIRC, which requires no external ponents and...