Flash MCU. HT66F0186 Datasheet

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HT66F0186 Datasheet
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Part HT66F0186
Description A/D Flash MCU
Feature HT66F0186; A/D Flash MCU with EEPROM HT66F0186 Revision: V1.20 Date: �Au�g�u��s�t�2��8,��2�0�1��7 HT66F0186 A/.
Manufacture Holtek Semiconductor
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Holtek Semiconductor HT66F0186
A/D Flash MCU with EEPROM
HT66F0186
Revision: V1.20 Date: �Au�g�u��s�t�2��8,��2�0�1��7



Holtek Semiconductor HT66F0186
HT66F0186
A/D Flash MCU with EEPROM
Table of Contents
Features............................................................................................................. 7
CPU Features.......................................................................................................................... 7
Peripheral Features.................................................................................................................. 7
General Description.......................................................................................... 8
Block Diagram................................................................................................... 8
Pin Assignment................................................................................................. 9
Pin Descriptions............................................................................................. 10
Absolute Maximum Ratings........................................................................... 13
D.C. Characteristics........................................................................................ 14
Operating Voltage Characteristics.......................................................................................... 14
Operating Current Characteristics.......................................................................................... 14
Standby Current Characteristics............................................................................................ 15
A.C. Characteristics........................................................................................ 16
High Speed Internal Oscillator – HIRC – Frequency Accuracy.............................................. 16
Low Speed Internal Oscillator – LIRC – Frequency Accuracy............................................... 16
Operating Frequency Characteristic Curves.......................................................................... 17
System Start Up Time Characteristics................................................................................... 17
Input/Output Characteristics......................................................................... 18
Memory Characteristics................................................................................. 19
A/D Converter Electrical Characteristics...................................................... 19
Reference Voltage Characteristics................................................................ 19
LVD/LVR Electrical Characteristics............................................................... 20
Comparator Electrical Characteristics......................................................... 20
Software Controlled LCD Driver Electrical Characteristics........................ 21
Power-on Reset Characteristics.................................................................... 21
System Architecture....................................................................................... 22
Clocking and Pipelining.......................................................................................................... 22
Program Counter.................................................................................................................... 23
Stack...................................................................................................................................... 24
Arithmetic and Logic Unit – ALU............................................................................................ 24
Flash Program Memory.................................................................................. 25
Structure................................................................................................................................. 25
Special Vectors...................................................................................................................... 25
Look-up Table......................................................................................................................... 25
Table Program Example......................................................................................................... 26
In Circuit Programming – ICP................................................................................................ 27
On-Chip Debug Support – OCDS.......................................................................................... 28
Data Memory................................................................................................... 29
Structure................................................................................................................................. 29
Rev. 1.20
2 August 28, 2017



Holtek Semiconductor HT66F0186
HT66F0186
A/D Flash MCU with EEPROM
Special Function Register Description......................................................... 31
Indirect Addressing Registers – IAR0, IAR1.......................................................................... 31
Memory Pointers – MP0, MP1............................................................................................... 31
Bank Pointer – BP.................................................................................................................. 32
Accumulator – ACC................................................................................................................ 32
Program Counter Low Register – PCL................................................................................... 32
Look-up Table Registers – TBLP, TBHP, TBLH...................................................................... 33
Status Register – STATUS..................................................................................................... 33
EEPROM Data Memory................................................................................... 35
EEPROM Data Memory Structure......................................................................................... 35
EEPROM Registers............................................................................................................... 35
Reading Data from the EEPROM.......................................................................................... 37
Writing Data to the EEPROM................................................................................................. 37
Write Protection...................................................................................................................... 38
EEPROM Interrupt................................................................................................................. 38
Programming Considerations................................................................................................. 39
Oscillator......................................................................................................... 41
Oscillator Overview................................................................................................................ 41
System Clock Configurations................................................................................................. 41
External Crystal/Ceramic Oscillator – HXT............................................................................ 42
Internal High Speed RC Oscillator – HIRC............................................................................ 43
External 32.768 kHz Crystal Oscillator – LXT........................................................................ 43
Internal 32kHz Oscillator – LIRC............................................................................................ 44
Supplementary Oscillators..................................................................................................... 44
Operating Modes and System Clocks.......................................................... 45
System Clocks....................................................................................................................... 45
System Operation Modes....................................................................................................... 46
Control Registers................................................................................................................... 47
Fast Wake-up......................................................................................................................... 49
Operating Mode Switching..................................................................................................... 50
Standby Current Considerations............................................................................................ 54
Wake-up................................................................................................................................. 54
Programming Considerations................................................................................................. 55
Watchdog Timer.............................................................................................. 56
Watchdog Timer Clock Source............................................................................................... 56
Watchdog Timer Control Register.......................................................................................... 56
Watchdog Timer Operation.................................................................................................... 57
Reset and Initialisation................................................................................... 58
Reset Functions..................................................................................................................... 58
Reset Initial Conditions.......................................................................................................... 60
Rev. 1.20
3 August 28, 2017





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