Flash MCU. HT45F3520 Datasheet

HT45F3520 MCU. Datasheet pdf. Equivalent

HT45F3520 Datasheet
Recommendation HT45F3520 Datasheet
Part HT45F3520
Description Personal Care Flash MCU
Feature HT45F3520; Personal Care Flash MCU HT45F3520/HT45F3530 Revision: V1.10 Date: �D�e�c�e�mb��e�r�1��3,���2�0�1�6 .
Manufacture Holtek Semiconductor
Datasheet
Download HT45F3520 Datasheet




Holtek Semiconductor HT45F3520
Personal Care Flash MCU
HT45F3520/HT45F3530
Revision: V1.10 Date: �D�e�c�e�mb��e�r�1��3,���2�0�1�6



Holtek Semiconductor HT45F3520
HT45F3520/HT45F3530
Personal Care Flash MCU
Table of Contents
Features............................................................................................................. 6
CPU Features.......................................................................................................................... 6
Peripheral Features.................................................................................................................. 6
General Description ......................................................................................... 7
Block Diagram................................................................................................... 7
Selection Table.................................................................................................. 8
Pin Assignment................................................................................................. 8
Pin Description................................................................................................. 9
Absolute Maximum Ratings............................................................................11
D.C. Characteristics........................................................................................ 12
A.C. Characteristics........................................................................................ 14
ADC Electrical Characteristics...................................................................... 15
LVR Electrical Characteristics....................................................................... 16
DC/DC (Boost) Electrical Characteristics..................................................... 16
Power on Reset Electrical 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...................................................................................................................... 22
Look-up Table......................................................................................................................... 22
Table Program Example......................................................................................................... 22
In Circuit Programming­ – ICP................................................................................................ 23
On-Chip Debug Support ­– OCDS.......................................................................................... 24
RAM Data Memory.......................................................................................... 25
Structure................................................................................................................................. 25
General Purpose Data Memory............................................................................................. 25
Special Purpose Data Memory.............................................................................................. 25
Special Function Register Description......................................................... 28
Indirect Addressing Registers ­– IAR0, IAR1.......................................................................... 28
Memory Pointers ­– MP0, MP1............................................................................................... 28
Bank Pointer ­– BP.................................................................................................................. 29
Accumulator ­– ACC................................................................................................................ 29
Program Counter Low Register ­– PCL................................................................................... 29
Look-up Table Registers ­– TBLP, TBLH................................................................................. 29
Status Register – STATUS..................................................................................................... 30
Rev. 1.10
2 December 13, 2016



Holtek Semiconductor HT45F3520
HT45F3520/HT45F3530
Personal Care Flash MCU
EEPROM Data Memory................................................................................... 32
EEPROM Data Memory Structure......................................................................................... 32
EEPROM Registers............................................................................................................... 32
Reading Data from the EEPROM ......................................................................................... 34
Writing Data to the EEPROM................................................................................................. 34
Write Protection...................................................................................................................... 34
EEPROM Interrupt................................................................................................................. 34
Programming Considerations................................................................................................. 35
Oscillators....................................................................................................... 36
Oscillator Overview................................................................................................................ 36
System Clock Configurations................................................................................................. 36
High Speed Internal RC Oscillator ­– HIRC............................................................................ 37
Internal 32kHz Oscillator ­– LIRC............................................................................................ 37
Supplementary Oscillator....................................................................................................... 37
Operating Modes and System Clocks.......................................................... 38
System Clocks....................................................................................................................... 38
System Operating Modes....................................................................................................... 39
Control Register..................................................................................................................... 40
Operating Mode Switching .................................................................................................... 41
Standby Current Considerations............................................................................................ 44
Wake-up................................................................................................................................. 45
Watchdog Timer.............................................................................................. 46
Watchdog Timer Clock Source............................................................................................... 46
Watchdog Timer Control Register.......................................................................................... 46
Watchdog Timer Operation.................................................................................................... 47
Reset and Initialisation................................................................................... 48
Reset Functions..................................................................................................................... 48
Reset Initial Conditions.......................................................................................................... 50
Input/Output Ports.......................................................................................... 54
Pull-high Resistors................................................................................................................. 54
Port A Wake-up...................................................................................................................... 56
I/O Port Control Registers...................................................................................................... 56
Pin-shared Functions............................................................................................................. 57
I/O Port Source Current Control – only for HT45F3530......................................................... 61
I/O Pin Structures................................................................................................................... 62
Programming Considerations ................................................................................................ 63
Timer Module ­– TM......................................................................................... 64
Introduction............................................................................................................................ 64
TM Operation......................................................................................................................... 64
TM Clock Source.................................................................................................................... 64
TM Interrupts.......................................................................................................................... 64
TM External Pins.................................................................................................................... 65
TM Input/Output Pin Selection .............................................................................................. 65
Programming Considerations................................................................................................. 66
Rev. 1.10
3 December 13, 2016







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