Flash MCU. HT45F3W Datasheet

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HT45F3W Datasheet
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Part HT45F3W
Description R-Type Blood Pressure Meter Flash MCU
Feature HT45F3W; R-Type Blood Pressure Meter Flash MCU HT45F3W Revision: V1.50 Date: �D�e�c�e�mb��e�r�0�1��,��2�0�1�6.
Manufacture Holtek Semiconductor
Datasheet
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Holtek Semiconductor HT45F3W
R-Type Blood Pressure Meter Flash MCU
HT45F3W
Revision: V1.50 Date: �D�e�c�e�mb��e�r�0�1��,��2�0�1�6



Holtek Semiconductor HT45F3W
HT45F3W
R-Type Blood Pressure Meter Flash MCU
Table of Contents
Features............................................................................................................. 6
CPU Features.......................................................................................................................... 6
Peripheral Features.................................................................................................................. 6
General Description.......................................................................................... 7
Block Diagram................................................................................................... 7
Pin Assignment................................................................................................. 8
Pin Description................................................................................................. 9
Absolute Maximum Ratings............................................................................11
D.C. Characteristics (Charge Pump & Regulator off).................................. 12
A.C. Characteristics........................................................................................ 13
A/D Electrical Characteristics........................................................................ 14
D/A Electrical Characteristics........................................................................ 15
Charge Pump, Regulator and PGA Electrical Characteristics.................... 15
LCD D.C. Characteristics............................................................................... 16
LVR Electrical Characteristics....................................................................... 17
Power-on Reset Characteristics.................................................................... 17
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
In Application Programming – IAP......................................................................................... 24
On Chip Debug Support (OCDS)........................................................................................... 31
Data Memory................................................................................................... 32
Structure................................................................................................................................. 32
General Purpose Data Memory............................................................................................. 33
Special Purpose Data Memory.............................................................................................. 33
LCD Memory.......................................................................................................................... 33
Special Function Register Description......................................................... 35
Indirect Addressing Register – IAR0, IAR1............................................................................ 35
Memory Pointers – MP0, MP1 .............................................................................................. 35
Bank Pointer – BP ................................................................................................................. 36
Accumulator – ACC................................................................................................................ 36
Rev. 1.50
2 December 01, 2016



Holtek Semiconductor HT45F3W
HT45F3W
R-Type Blood Pressure Meter Flash MCU
Program Counter Low Register – PCL .................................................................................. 36
Look-up Table Registers – TBLP, TBHP, TBLH ..................................................................... 37
Status Register – STATUS .................................................................................................... 37
System Control Register................................................................................ 39
EEPROM Data memory.................................................................................. 41
EEPROM Data Memory Structure......................................................................................... 41
EEPROM Registers............................................................................................................... 41
Oscillators....................................................................................................... 45
Oscillator Overview ............................................................................................................... 45
System Clock Configurations ................................................................................................ 45
External Crystal/Ceramic Oscillator – HXT............................................................................ 46
External RC Oscillator – ERC ............................................................................................... 47
Internal RC Oscillator – HIRC ............................................................................................... 47
External 32.768kHz Crystal Oscillator – LXT......................................................................... 48
LXT Oscillator Low Power Function ...................................................................................... 49
Internal 32kHz Oscillator – LIRC ........................................................................................... 49
Supplementary Oscillators .................................................................................................... 49
Operating Modes and System Clocks ......................................................... 50
System Clocks ...................................................................................................................... 50
System Operation Modes ...................................................................................................... 52
Control Register..................................................................................................................... 53
Fast Wake – up ..................................................................................................................... 55
Operating Mode Switching .................................................................................................... 56
Standby Current Considerations ........................................................................................... 60
Wake-up ................................................................................................................................ 60
Programming Considerations ................................................................................................ 61
Watchdog Timer.............................................................................................. 62
Watchdog Timer Clock Source............................................................................................... 62
Watchdog Timer Control Register.......................................................................................... 62
Watchdog Timer Operation.................................................................................................... 63
Reset and Initialisation................................................................................... 65
Reset Functions .................................................................................................................... 65
Reset Initial Conditions ......................................................................................................... 67
Input/Output Ports ......................................................................................... 71
Pull-high Resistors................................................................................................................. 71
Port A Wake-up...................................................................................................................... 72
I/O Port Control Registers...................................................................................................... 73
SCKO Function...................................................................................................................... 74
I/O Pin Structures................................................................................................................... 74
Programming Considerations ................................................................................................ 75
Timer Modules – TM....................................................................................... 76
Introduction............................................................................................................................ 76
TM Operation......................................................................................................................... 76
Rev. 1.50
3 December 01, 2016







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