Flash MCU. HT45F75 Datasheet

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HT45F75 Datasheet
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Part HT45F75
Description Body Fat Scale Flash MCU
Feature HT45F75; Body Fat Scale Flash MCU HT45F75 Revision: V1.10 Date: �D�e�c�e�mb��e�r�1��4,���2�0�1�6 HT45F75 Bod.
Manufacture Holtek Semiconductor
Datasheet
Download HT45F75 Datasheet




Holtek Semiconductor HT45F75
Body Fat Scale Flash MCU
HT45F75
Revision: V1.10 Date: �D�e�c�e�mb��e�r�1��4,���2�0�1�6



Holtek Semiconductor HT45F75
HT45F75
Body Fat Scale Flash MCU
Table of Contents
Features................................................................................................................. 6
CPU Features...............................................................................................................................6
Peripheral Features.......................................................................................................................6
General Description.............................................................................................. 7
Block Diagram....................................................................................................... 8
Pin Assignment..................................................................................................... 8
Pin Description..................................................................................................... 9
Absolute Maximum Ratings............................................................................... 11
D.C. Characteristics............................................................................................ 12
A.C. Characteristics............................................................................................ 14
LDO+PGA+ADC+VCM Electrical Characteristics............................................ 15
Effective Number of Bits (ENOB)................................................................................................17
Operational Amplifier Electrical Characteristics (Body Fat Circuit).............. 17
Power-on Reset Characteristics........................................................................ 18
System Architecture........................................................................................... 18
Clocking and Pipelining...............................................................................................................18
Program Counter.........................................................................................................................19
Stack...........................................................................................................................................20
Arithmetic and Logic Unit – ALU ................................................................................................20
Flash Program Memory ..................................................................................... 21
Structure .....................................................................................................................................21
Special Vectors...........................................................................................................................21
Look-up Table .............................................................................................................................21
Table Program Example..............................................................................................................22
In Circuit Programming – ICP.....................................................................................................23
On Chip Debug Support – OCDS...............................................................................................23
In Application Programming – IAP..............................................................................................24
RAM Data Memory.............................................................................................. 31
Structure .....................................................................................................................................31
General Purpose Data Memory..................................................................................................32
Special Purpose Data Memory...................................................................................................32
Special Function Register Description............................................................. 34
Indirect Addressing Registers – IAR0, IAR1, IAR2.....................................................................34
Memory Pointers – MP0, MP1L, MP1H, MP2L, MP2H...............................................................34
Accumulator – ACC ....................................................................................................................35
Program Counter Low Register – PCL .......................................................................................36
Look-up Table Registers – TBLP, TBHP, TBLH ..........................................................................36
Status Register – STATUS .........................................................................................................36
Rev. 1.10
2 December 14, 2016



Holtek Semiconductor HT45F75
HT45F75
Body Fat Scale Flash MCU
EEPROM Data memory...................................................................................... 38
EEPROM Data Memory Structure..............................................................................................38
EEPROM Registers....................................................................................................................38
Reading Data from the EEPROM...............................................................................................40
Writing Data to the EEPROM......................................................................................................40
Write Protection...........................................................................................................................40
EEPROM Interrupt......................................................................................................................40
Programming Considerations......................................................................................................41
Oscillators........................................................................................................... 42
Oscillator Overview ....................................................................................................................42
System Clock Configurations......................................................................................................42
External Crystal/Ceramic Oscillator – HXT ................................................................................43
Internal RC Oscillator – HIRC.....................................................................................................44
Internal 32kHz Oscillator – LIRC ................................................................................................44
External 32.768kHz Crystal Oscillator – LXT .............................................................................44
Supplementary Oscillators .........................................................................................................46
Operating Modes and System Clocks.............................................................. 46
System Clocks............................................................................................................................46
System Operation Modes ...........................................................................................................48
Control Register..........................................................................................................................49
Fast Wake-up..............................................................................................................................51
Operating Mode Switching .........................................................................................................51
Standby Current Considerations ................................................................................................56
Wake-up .....................................................................................................................................56
Programming Considerations .....................................................................................................57
Watchdog Timer.................................................................................................. 57
Watchdog Timer Clock Source....................................................................................................57
Watchdog Timer Control Register...............................................................................................57
Watchdog Timer Operation.........................................................................................................59
Reset and Initialisation ...................................................................................... 60
Reset Functions..........................................................................................................................60
Reset Initial Conditions ..............................................................................................................63
Input/Output Ports ............................................................................................. 66
Pull-high Resistors......................................................................................................................66
Port A Wake-up...........................................................................................................................67
I/O Port Control Registers...........................................................................................................68
I/O Port Source Current Control..................................................................................................69
I/O Pin Structures........................................................................................................................70
Programming Considerations......................................................................................................70
Timer Modules – TM........................................................................................... 71
Introduction.................................................................................................................................71
TM Operation..............................................................................................................................71
TM Clock Source.........................................................................................................................71
Rev. 1.10
3 December 14, 2016







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