General Description; Selection Table - Holtek HT66F488 Manual

General Description

The devices are 8-bit high performance RISC architecture microcontroller, designed especially for
applications that interface directly to analog signals, such as those from sensor. Offering users the
convenience of Flash Memory multi-programming features, this device also includes a wide range
of functions and features. Other memory includes an area of RAM Data Memory as well as an area
of true 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 converter. Multiple and extremely flexible Timer
Modules provide timing, pulse generation and PWM generation functions. Communication with
the outside world catered for by including fully integrated SPI, I
three popular 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 ensure that
reliable operation is maintained in hostile electrical environments.
A full choice of HXT, LXT, HIRC 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 minimize power
consumption.
The inclusion of flexible I/O programming features, Time-Base functions along with many
other features ensure that the device will find excellent use in applications such as sensor signal
processing, chargers, motor driving, industrial control, consumer product, subsystem controller, etc.

Selection Table

Most features are common to all devices, the main feature distinguishing them are Memory capacity
and whether EEPROM or not. The following table summarises the main features of each device.
Program
Part No.
Memory
HT66F488
HT66F48�
Part No.
1�-�it CTM×1
HT66F488
16-�it STM×1
HT66F48�
1�-�it PTM×2
Rev. 1.21
Data Data
Memory EEPROM
4K×16
384×8 64×8
8K×16
Timer
RTC A/D
Module
√ 12-�it×8
8
HT66F488/HT66F489
A/D Flash MCU with EEPROM
C and UART interface functions,
2
R-type LCD
I/O
(1/3 Bias)
6(SCOM/SSEG)
26
+2�SSEG
Interface Stack
SPI/I C� UART 8
2
�ove��e� ��� 2�1�
High Current
LED Output
26
Package
28SOP/SSOP