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Flash MCU. HT68F20-1 Datasheet

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Flash MCU. HT68F20-1 Datasheet






HT68F20-1 MCU. Datasheet pdf. Equivalent




HT68F20-1 MCU. Datasheet pdf. Equivalent





Part

HT68F20-1

Description

Flash MCU



Feature


Flash MCU with EEPROM HT66F20-1/HT66F30- 1 HT68F20-1/HT68F30-1 Revision: V1.40 D ate: �N�o�ve��mb��e�r �23�,���2�0�1�6 HT66F 20-1/HT66F30-1/HT68F20-1/HT68F30-1 Flas h MCU with EEPROM Table of Contents Fea tures.................................. ....................................... .................................... 7 CPU Features.........................................
Manufacture

Holtek Semiconductor

Datasheet
Download HT68F20-1 Datasheet


Holtek Semiconductor HT68F20-1

HT68F20-1; ........................................ ....................................... ... 7 Peripheral Features.............. ....................................... ....................................... ...................... 7 General Descri ption.................................. ....................................... ................. 8 Selection Table.... ...................


Holtek Semiconductor HT68F20-1

........................................ .................................... 8 Block Diagram.......................... ....................................... .................................. 9 Pi n Assignment.................. .


Holtek Semiconductor HT68F20-1

.

Part

HT68F20-1

Description

Flash MCU



Feature


Flash MCU with EEPROM HT66F20-1/HT66F30- 1 HT68F20-1/HT68F30-1 Revision: V1.40 D ate: �N�o�ve��mb��e�r �23�,���2�0�1�6 HT66F 20-1/HT66F30-1/HT68F20-1/HT68F30-1 Flas h MCU with EEPROM Table of Contents Fea tures.................................. ....................................... .................................... 7 CPU Features.........................................
Manufacture

Holtek Semiconductor

Datasheet
Download HT68F20-1 Datasheet




 HT68F20-1
Flash MCU with EEPROM
HT66F20-1/HT66F30-1
HT68F20-1/HT68F30-1
Revision: V1.40 Date: �N�o�ve��mb��e�r��23�,���2�0�1�6




 HT68F20-1
HT66F20-1/HT66F30-1/HT68F20-1/HT68F30-1
Flash MCU with EEPROM
Table of Contents
Features............................................................................................................. 7
CPU Features.......................................................................................................................... 7
Peripheral Features.................................................................................................................. 7
General Description.......................................................................................... 8
Selection Table.................................................................................................. 8
Block Diagram................................................................................................... 9
Pin Assignment............................................................................................... 10
Pin Description............................................................................................... 12
Absolute Maximum Ratings........................................................................... 16
D.C. Characteristics........................................................................................ 16
HT66F20-1/HT66F30-1.......................................................................................................... 16
HT68F20-1/HT68F30-1.......................................................................................................... 18
A.C. Characteristics........................................................................................ 19
HT66F20-1/HT66F30-1.......................................................................................................... 19
HT68F20-1/HT68F30-1.......................................................................................................... 21
A/D Converter Characteristics....................................................................... 22
HT66F20-1/HT66F30-1.......................................................................................................... 22
Comparator Electrical Characteristics......................................................... 22
Power on Reset Electrical Characteristics................................................... 23
System Architecture....................................................................................... 23
Clocking and Pipelining.......................................................................................................... 23
Program Counter.................................................................................................................... 24
Stack...................................................................................................................................... 25
Arithmetic and Logic Unit – ALU............................................................................................ 25
Flash Program Memory.................................................................................. 26
Structure................................................................................................................................. 26
Special Vectors...................................................................................................................... 26
Look-up Table......................................................................................................................... 27
Table Program Example......................................................................................................... 27
In Circuit Programming.......................................................................................................... 28
Data Memory................................................................................................... 29
Structure................................................................................................................................. 29
Rev. 1.40
2 November 23, 2016




 HT68F20-1
HT66F20-1/HT66F30-1/HT68F20-1/HT68F30-1
Flash MCU with EEPROM
Special Function Register Description......................................................... 35
Indirect Addressing Registers – IAR0, IAR1.......................................................................... 35
Memory Pointers – MP0, MP1............................................................................................... 35
Bank Pointer – BP.................................................................................................................. 36
Accumulator – ACC................................................................................................................ 36
Program Counter Low Register – PCL................................................................................... 36
Look-up Table Registers – TBLP, TBHP, TBLH...................................................................... 37
Status Register – STATUS..................................................................................................... 37
EEPROM Data Memory................................................................................... 38
EEPROM Data Memory Structure......................................................................................... 38
EEPROM Registers............................................................................................................... 39
Reading Data from the EEPROM.......................................................................................... 41
Writing Data to the EEPROM................................................................................................. 41
Write Protection...................................................................................................................... 41
EEPROM Interrupt................................................................................................................. 41
Programming Consideration.................................................................................................. 42
Programming Examples......................................................................................................... 42
Oscillator......................................................................................................... 43
Oscillator Overview................................................................................................................ 43
System Clock Configurations................................................................................................. 43
External Crystal/Ceramic Oscillator – HXT............................................................................ 44
External RC Oscillator – ERC................................................................................................ 45
Internal RC Oscillator – HIRC................................................................................................ 45
External 32.768kHz Crystal Oscillator – LXT......................................................................... 46
LXT Oscillator Low Power Function....................................................................................... 47
Internal 32kHz Oscillator – LIRC............................................................................................ 47
Supplementary Clocks........................................................................................................... 47
Operating Modes and System Clocks.......................................................... 48
System Clocks....................................................................................................................... 48
System Operation Modes....................................................................................................... 50
Control Register..................................................................................................................... 51
Fast Wake-up......................................................................................................................... 52
Operating Mode Switching..................................................................................................... 54
Standby Current Considerations............................................................................................ 57
Wake-up................................................................................................................................. 57
Programming Considerations................................................................................................. 58
Watchdog Timer.............................................................................................. 58
Watchdog Timer Clock Source............................................................................................... 58
Watchdog Timer Control Register.......................................................................................... 59
Watchdog Timer Operation.................................................................................................... 60
Reset and Initialisation................................................................................... 61
Reset Functions..................................................................................................................... 61
Reset Initial Conditions.......................................................................................................... 64
Rev. 1.40
3 November 23, 2016



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