Flash MCU. HT45FH4J Datasheet

HT45FH4J MCU. Datasheet pdf. Equivalent

HT45FH4J Datasheet
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Part HT45FH4J
Description Emergency Light Flash MCU
Feature HT45FH4J; Emergency Light Flash MCU HT45FH4J Revision: V1.10 Date: �D�e�c�e�mb��e�r�1��4,���2�0�1�6 HT45FH4J .
Manufacture Holtek Semiconductor
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Holtek Semiconductor HT45FH4J
Emergency Light Flash MCU
HT45FH4J
Revision: V1.10 Date: �D�e�c�e�mb��e�r�1��4,���2�0�1�6



Holtek Semiconductor HT45FH4J
HT45FH4J
Emergency Light Flash MCU
Table of Contents
Features............................................................................................................. 6
CPU Features.......................................................................................................................... 6
Peripheral Features.................................................................................................................. 6
Emergency Light Application Features..................................................................................... 6
General Description ......................................................................................... 7
Block Diagram................................................................................................... 7
Pin Assignment................................................................................................. 8
Pin Descriptions............................................................................................... 9
Absolute Maximum Ratings............................................................................11
D.C. Characteristics.........................................................................................11
A.C. Characteristics........................................................................................ 13
LVD&LVR Electrical Characteristics............................................................. 14
ADC Electrical Characteristics...................................................................... 15
LDO Regulator Electrical Characteristics.................................................... 15
Over Current Pretection Electrical Characteristics..................................... 16
Power-on Reset Electrical Characteristics................................................... 16
System Architecture....................................................................................... 17
Clocking and Pipelining.......................................................................................................... 17
Program Counter.................................................................................................................... 18
Stack...................................................................................................................................... 19
Arithmetic and Logic Unit – ALU............................................................................................ 19
Flash Program Memory.................................................................................. 20
Structure................................................................................................................................. 20
Special Vectors...................................................................................................................... 20
Look-up Table......................................................................................................................... 21
Table Program Example......................................................................................................... 22
In Circuit Programming.......................................................................................................... 23
On-Chip Debug Support – OCDS.......................................................................................... 24
RAM Data Memory.......................................................................................... 25
Structure................................................................................................................................. 25
Special Function Register Description......................................................... 27
Indirect Addressing Registers – IAR0, IAR1.......................................................................... 27
Memory Pointers – MP0, MP1............................................................................................... 27
Bank Pointer – BP.................................................................................................................. 28
Accumulator – ACC................................................................................................................ 28
Program Counter Low Register – PCL................................................................................... 28
Look-up Table Registers – TBLP, TBHP, TBLH...................................................................... 28
Status Register – STATUS..................................................................................................... 29
Rev. 1.10
2 December 14, 2016



Holtek Semiconductor HT45FH4J
HT45FH4J
Emergency Light Flash MCU
EEPROM Data Memory................................................................................... 31
EEPROM Data Memory Structure......................................................................................... 31
EEPROM Registers............................................................................................................... 31
Reading Data from the EEPROM ......................................................................................... 33
Writing Data to the EEPROM................................................................................................. 33
Write Protection...................................................................................................................... 33
EEPROM Interrupt................................................................................................................. 33
Programming Considerations................................................................................................. 34
Oscillator......................................................................................................... 35
Oscillator Overview................................................................................................................ 35
System Clock Configurations................................................................................................. 35
Internal RC Oscillator – HIRC................................................................................................ 36
Internal 32kHz Oscillator – LIRC............................................................................................ 36
Operating Modes and System Clocks.......................................................... 36
System Clocks....................................................................................................................... 36
System Operation Modes....................................................................................................... 37
Control Register..................................................................................................................... 39
Operating Mode Switching .................................................................................................... 41
NORMAL Mode to SLOW Mode Switching............................................................................ 41
SLOW Mode to NORMAL Mode Switching ........................................................................... 42
Entering the SLEEP Mode..................................................................................................... 42
Entering the IDLE0 Mode....................................................................................................... 43
Entering the IDLE1 Mode....................................................................................................... 43
Standby Current Considerations............................................................................................ 43
Wake-up................................................................................................................................. 44
Watchdog Timer.............................................................................................. 45
Watchdog Timer Clock Source............................................................................................... 45
Watchdog Timer Control Register.......................................................................................... 45
Watchdog Timer Operation.................................................................................................... 46
Reset and Initialisation................................................................................... 47
Reset Functions..................................................................................................................... 47
Reset Initial Conditions.......................................................................................................... 50
Input/Output Ports.......................................................................................... 53
Pull-high Resistors................................................................................................................. 53
Port A Wake-up...................................................................................................................... 54
I/O Port Control Registers...................................................................................................... 54
Pin-shared Functions............................................................................................................. 55
Pin-shared Function Selection Registers............................................................................... 55
I/O Pin Structures................................................................................................................... 56
Programming Considerations................................................................................................. 57
Rev. 1.10
3 December 14, 2016







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