Features; Cpu Featu�Es - Holtek HT66F488 Manual

HT66F488/HT66F489
A/D Flash MCU with EEPROM

Features

CPU Features
• Operating Voltage
f = 8MHz: 2.2V~5.5V
♦
SYS
f = 10MHz: 2.7V~5.5V
♦
SYS
f = 12MHz: 3.3V~5.5V
♦
SYS
f = 16MHz: 4.5V~5.5V
♦
SYS
• Up to 0.25μs instruction cycle with 16MHz system clock at V
• Power down and wake-up functions to reduce power consumption
• Four Oscillators:
• External High Frequency Crystal – HXT
• External 32.768kHz Crystal-- LXT
• Internal High Frequency RC -- HIRC
• Internal 32kHz -- LIRC
• Fully intergrated internal 8MHz oscillator requires no external components
• Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
• All instructions executed in one to three instruction cycles
• Table read instructions
• 115 powerful instructions
• 8-level subroutine nesting
• Bit manipulation instruction
Peripheral Features
• Flash Program Memory: 8K×16 (HT66F489)/4K×16 (HT66F488)
• RAM Data Memory: 384×8
• True EEPROM Memory: 64×8
• Watchdog Timer function
• 30 bidirectional I/O lines
• LED driver
• 1/3 Bias Software LCD
• Serial Interface Module – SIM for SPI or I
• UART Function
• Six pin-shared external interrupts
• Multiple Timer Module for time measure, input capture, compare match output, PWM output
function or single pulse output function
• Dual Time-Base functions for generation of fixed time interrupt signals
• 8-channel 12-bit resolution A/D converter
• Low voltage reset function
• Low voltage detector function
• Package: 28-pin SOP/SSOP
Rev. 1.21
=5V
DD
C
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