Rev. 1.50
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HT66F0175/HT66F0185
A/D Flash MCU with EEPROM
HT66F0175/HT66F0185
A/D Flash MCU with EEPROM
General Description
The series of devices are Flash Memory A/D type 8-bit high performance RISC architecture
microcontroller. 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 true EEPROM memory for storage of non-volatile data
such as serial numbers, calibratuib data, etc.
Analog features include a multi-channel 12-bit A/D converter and a comparator functions. 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, 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 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 features distinguishing them are Memory
capacity, I/O count, Timer Module features, SSEG count, LED count, UART and package types. The
following table summarises the main features of each device.
Part No.
Program
Memory
Data
Memory
Data
EEPROM
I/O
External
Interrupt
A/D
Timer Module
HT66F01�5
�k × 16
1�� × �
64 × �
��
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1�-bit × � 10-bit PTM × �
HT66F01�5
4k × 16
�56 × �
1�� × �
�6
�
1�-bit × �
16-bit CTM × 1
16-bit STM × 1
10-bit PTM × 1
Part No.
Time
Base SIM UART CMP
SCOM/
SSEG SSEG LED Stack
Package
HT66F01�5
�
√
—
—
6
14
��
�
�0/�4SOP/SSOP
HT66F01�5
�
√
√
√
6
1�
�6
�
�4/��SOP/SSOP
Note: As devices exist in more than one package format, the table reflects the situation for the package with
the most pins.