HT66F20 Datasheet, PDF (1/224 Pages) Holtek Semiconductor Inc – Enhanced A/D Flash Type MCU 8-Bit MCU with EEPROM

HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
Enhanced A/D Flash Type MCU 8-Bit MCU with EEPROM
Technical Document
· Application Note
- HA0075E MCU Reset and Oscillator Circuits Application Note
Features
CPU Features
· Operating Voltage:
f_SYS= 8MHz: 2.2V~5.5V
f_SYS= 12MHz: 2.7V~5.5V
f_SYS= 20MHz: 4.5V~5.5V
· Up to 0.2ms instruction cycle with 20MHz system
clock at V_DD=5V
· Power down and wake-up functions to reduce power
consumption
· Five oscillators:
External Crystal - HXT
External 32.768kHz Crystal - LXT
External RC - ERC
Internal RC - HIRC
Internal 32kHz RC - LIRC
· Multi-mode operation: NORMAL, SLOW, IDLE and
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
· Flash Program Memory: 1K´14 ~ 12K´16
· RAM Data Memory: 64´8 ~ 576´8
· EEPROM Memory: 32´8~256´8
· Watchdog Timer function
· Up to 50 bidirectional I/O lines
· Software controlled 4-SCOM lines LCD driver with
1/2 bias
· Multiple pin-shared external interrupts
· Multiple Timer Module for time measure, input
capture, compare match output, PWM output or
single pulse output function
· Serial Interfaces Module - SIM for SPI or I²C
· Dual Comparator functions
· Dual Time-Base functions for generation of fixed time
interrupt signals
· Multi-channel 12-bit resolution A/D converter
· Low voltage reset function
· Low voltage detect function
· Wide range of available package types
General Description
The HT66FXX series of devices are Flash Memory A/D
type 8-bit high performance RISC architecture
microcontrollers. Offering users the convenience of Flash
Memory multi-programming features, these devices also
include a wide range of functions and features. Other
memory includes an area of RAM Data Memory as well as
an area of EEPROM memory for storage of non-volatile
data such as serial numbers, calibration data etc.
Analog features include a multi-channel 12-bit A/D con-
verter and dual comparator functions. Multiple and ex-
tremely flexible Timer Modules provide timing, pulse
generation and PWM generation functions. Communi-
cation with the outside world is catered for by including
fully integrated SPI or I²C interface functions, two popu-
lar interfaces which provide designers with a means of
easy communication with external peripheral hardware.
Protective features such as an internal Watchdog Timer,
Low Voltage Reset and Low Voltage Detector coupled
with excellent noise immunity and ESD protection en-
sure that reliable operation is maintained in hostile elec-
trical environments.
A full choice of HXT, LXT, ERC, HIRC and LIRC oscilla-
tor functions are provided including a fully integrated
system oscillator which requires no external compo-
nents for its implementation. The ability to operate and
switch dynamically between a range of operating
modes using different clock sources gives users the
ability to optimise microcontroller operation and mini-
mise power consumption.
The inclusion of flexible I/O programming features,
Time-Base functions along with many other features en-
sure that the devices will find excellent use in applica-
tions such as electronic metering, environmental
monitoring, handheld instruments, household appli-
ances, electronically controlled tools, motor driving in
addition to many others.
Rev. 1.00
1
November 3, 2009