HT56R22

General Description

These TinyPowerTM A/D Type 8-bit high performance RISC architecture microcontrollers are specifically, designed for applications that interface directly to analog signals. The devices include an integrated multi-channel Analog to Digital Converter, Pulse Width Modulation and and DAC outputs.

Features

CPU Features
• Operating voltage:
fSYS= 32768Hz: 2.2V~5.5V
fSYS= 4MHz: 2.2V~5.5V
fSYS= 8MHz: 3.0V~5.5V
fSYS= 12MHz: 4.5V~5.5V
• Up to 0.33μs instruction cycle with 12MHz system clock at VDD= 5V
• Idle/Sleep mode and wake-up functions to reduce power consumption
• Oscillator types:
External 32768Hz Crystal -- LXT
External RC -- ERC
Internal 4/8/12MHz RC -- HIRC
External high frequency crystal -- HXT
Internal 32kHz RC -- LIRC
• Four operational modes: Normal, Slow, Idle, Sleep
• Fully integrated internal 4MHz, 8MHz and 12MHz oscillator requires no external components
• All instructions executed in one or two instruction cycles
• Table read instructions
• 63 powerful instructions
• Up to 12-level subroutine nesting
• Bit manipulation instruction

Peripheral Features

• OTP Program Memory: 2Kx14 ~ 32Kx16
• RAM Data Memory: 128x8 ~ 2304x8 Bits
• Watchdog Timer function
• Up to 50 bidirectional I/O lines
• 8 channel 12-bit ADC
• Up to 4 channel 12-bit PWM
• Software controlled 4-SCOM lines LCD driver with 1/2 bias
• Multiple pin-shared external interrupts
• Up to three 8-bit programmable Timer/Event Counter with overflow interrupt and prescaler
• Up to one 16-bit programmable Timer/Event Counter with overflow interrupt
• Serial Interfaces Module - SIM for SPI or I2C
• Time-Base functions
• Low voltage reset function
• Low voltage detect function
• PFD/Buzzer for audio frequency generation
• 12-bit Audio DAC output
• Wide range of available package types