HT66F25D(2012) Просмотр технического описания (PDF) - Holtek Semiconductor
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HT66F25D Datasheet PDF : 177 Pages
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A/D Flash Type 8-bit MCU with EEPROM
HT66F24D/HT66F25D
General Description
The 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 for application program data storage.
Analog feature includes a multi-channel 12-bit A/D converter. Multiple and extremely flexible Timer
Modules provide timing, pulse generation and PWM generation functions. Protective features such
as an internal Watchdog Timer, Low Voltage Reset and Low Voltage Detector coupled with excellent
noise immunity and ESD protection ensure that reliable operation is maintained in hostile electrical
environments.
A full choice of HXT, HIRC, LXT and LIRC oscillator functions are provided including a fully
integrated system oscillator which requires no external components 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 minimise power
consumption.
The inclusion of flexible I/O programming features, Time-Base functions along with many other
features ensure that the devices will find excellent use in applications such as electronic metering,
environmental monitoring, handheld instruments, household appliances, electronically controlled
tools, motor driving in addition to many others.
Selection Table
Most features are common to all devices, the main feature distinguishing them are Memory capacity,
I/O count, TM features, stack capacity and package types. The following table summarises the main
features of each device.
Part No.
VDD
Program
Memory
Data
Memory
Data
EEPROM
I/O
External
Interrupt
HT66F24D
2.2V~5.5V
2k x 16
96 x 8
64 x 8
22
2
HT66F25D
2.2V~5.5V
4k x 16
192 x 8
64 x 8
26
2
Part No.
HT66F24D
A/D
Converter
12-bit x 8
HT66F25D
12-bit x 8
Timer
Module
10-bit CTM x 1
10-bit STM x 1
10-bit CTM x 1
10-bit ETM x 1
LED
Driver
8x6
8x8
Stacks
8
8
Package
16DIP/NSOP
20DIP/SOP
24SKDIP/SOP
20DIP/SOP
24/28SKDIP/SOP
Note: As devices exist in more than one package format, the table reflects the situation for the package with the
most pins.
Rev. 1.00
7
July 26, 2012
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