Flash MCU. BA45F6730 Datasheet

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BA45F6730 Datasheet
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Part BA45F6730
Description CO/Gas Detector Flash MCU
Feature BA45F6730; CO/Gas Detector Flash MCU BA45F6730 Revision: V1.00 Date: �M�a�r�c�h��27�,���2�0�1�8 BA45F6730 CO/G.
Manufacture Holtek Semiconductor
Datasheet
Download BA45F6730 Datasheet




Holtek Semiconductor BA45F6730
CO/Gas Detector Flash MCU
BA45F6730
Revision: V1.00 Date: �M�a�r�c�h��27�,���2�0�1�8



Holtek Semiconductor BA45F6730
BA45F6730
CO/Gas Detector 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............................................................................................ 12
Operating Voltage Characteristics ..............................................................................................12
Standby Current Characteristics.................................................................................................12
Operating Current Characteristics...............................................................................................13
A.C. Characteristics............................................................................................ 13
High Speed Internal Oscillator – HIRC – Frequency Accuracy...................................................13
Low Speed Internal Oscillator Characteristics – LIRC................................................................14
Operating Frequency Characteristic Curves...............................................................................14
System Start Up Time Characteristics .......................................................................................14
Input/Output Characteristics............................................................................. 15
Memory Characteristics..................................................................................... 15
LVR/LVD Electrical Characteristics................................................................... 16
A/D Converter Electrical Characteristics.......................................................... 16
Reference Voltage Electrical Characteristics................................................... 17
OPA Electrical Characteristics.......................................................................... 17
LDO Electrical Characteristics.......................................................................... 19
Power-on Reset Characteristics........................................................................ 19
System Architecture........................................................................................... 20
Clocking and Pipelining...............................................................................................................20
Program Counter.........................................................................................................................21
Stack...........................................................................................................................................21
Arithmetic and Logic Unit – ALU.................................................................................................22
Flash Program Memory...................................................................................... 23
Structure......................................................................................................................................23
Special Vectors...........................................................................................................................23
Look-up Table..............................................................................................................................23
Table Program Example..............................................................................................................24
In Circuit Programming – ICP.....................................................................................................25
On-Chip Debug Support – OCDS...............................................................................................26
Rev. 1.00
2 March 27, 2018



Holtek Semiconductor BA45F6730
BA45F6730
CO/Gas Detector Flash MCU
Data Memory....................................................................................................... 26
Structure......................................................................................................................................26
Data Memory Addressing............................................................................................................27
General Purpose Data Memory..................................................................................................27
Special Purpose Data Memory...................................................................................................27
Special Function Register Description............................................................. 29
Indirect Addressing Registers – IAR0, IAR1, IAR2.....................................................................29
Memory Pointers – MP0, MP1L, MP1H, MP2L, MP2H...............................................................29
Accumulator – ACC.....................................................................................................................30
Program Counter Low Register – PCL........................................................................................31
Look-up Table Registers – TBLP, TBHP, TBLH...........................................................................31
Status Register – STATUS..........................................................................................................31
EEPROM Data Memory....................................................................................... 33
EEPROM Data Memory Structure..............................................................................................33
EEPROM Registers....................................................................................................................33
Reading Data from the EEPROM...............................................................................................34
Writing Data to the EEPROM......................................................................................................35
Write Protection...........................................................................................................................35
EEPROM Interrupt......................................................................................................................35
Programming Considerations......................................................................................................35
Oscillators........................................................................................................... 37
Oscillator Overview.....................................................................................................................37
System Clock Configurations......................................................................................................37
Internal High Speed RC Oscillator – HIRC.................................................................................38
Internal 32kHz Oscillator – LIRC.................................................................................................38
Operating Modes and System Clocks.............................................................. 38
System Clocks............................................................................................................................38
System Operation Modes............................................................................................................39
Control Registers........................................................................................................................40
Operating Mode Switching..........................................................................................................42
Standby Current Considerations.................................................................................................46
Wake-up......................................................................................................................................46
Watchdog Timer.................................................................................................. 47
Watchdog Timer Clock Source....................................................................................................47
Watchdog Timer Control Register...............................................................................................47
Watchdog Timer Operation.........................................................................................................48
Reset and Initialisation....................................................................................... 49
Reset Functions..........................................................................................................................49
Reset Initial Conditions...............................................................................................................50
Input/Output Ports.............................................................................................. 53
Pull-high Resistors......................................................................................................................53
Port A Wake-up...........................................................................................................................54
I/O Port Control Registers...........................................................................................................54
Rev. 1.00
3 March 27, 2018







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