Flash MCU. BH67F5245 Datasheet

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BH67F5245 Datasheet
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Part BH67F5245
Description 24-Bit Delta Sigma A/D Flash MCU
Feature BH67F5245; 24-Bit Delta Sigma A/D Flash MCU with LCD and Touch Key BH67F5245 Revision: V1.10 Date: �D�e�c�e�mb�.
Manufacture Holtek Semiconductor
Datasheet
Download BH67F5245 Datasheet




Holtek Semiconductor BH67F5245
24-Bit Delta Sigma A/D Flash MCU
with LCD and Touch Key
BH67F5245
Revision: V1.10 Date: �D�e�c�e�mb��e�r�1��4,���2�0�1�7



Holtek Semiconductor BH67F5245
BH67F5245
24-Bit Delta Sigma A/D Flash MCU
with LCD and Touch Key
Table of Contents
Features............................................................................................................. 7
CPU Features.......................................................................................................................... 7
Peripheral Features.................................................................................................................. 7
General Description.......................................................................................... 8
Block Diagram................................................................................................... 8
Pin Assignment................................................................................................. 9
Pin Description............................................................................................... 10
Absolute Maximum Ratings........................................................................... 12
D.C. Characteristics........................................................................................ 12
Operating Voltage Characteristics.......................................................................................... 12
Standby Current Characteristics............................................................................................ 13
Operating Current Characteristics.......................................................................................... 13
A.C. Characteristics........................................................................................ 14
High Speed Internal Oscillator – HIRC – Frequency Accuracy.............................................. 14
Low Speed Internal Oscillator Characteristics – LIRC........................................................... 14
Operating Frequency Characteristic Curves.......................................................................... 15
System Start Up Time Characteristics................................................................................... 15
Input/Output Characteristics......................................................................... 16
Memory Characteristics................................................................................. 17
LVD/LVR Electrical Characteristics............................................................... 17
Analog Front End Circuit Characteristics.................................................... 18
24-bit A/D Converter Electrical Characteristics...................................................................... 18
12-bit D/A Converter Electrical Characteristics...................................................................... 20
LCD Electrical Characteristics...................................................................... 20
Touch Key Electrical Characteristics............................................................ 21
Comparator Electrical Characteristics......................................................... 25
Power-on Reset Characteristics.................................................................... 25
System Architecture....................................................................................... 26
Clocking and Pipelining.......................................................................................................... 26
Program Counter.................................................................................................................... 27
Stack...................................................................................................................................... 27
Arithmetic and Logic Unit – ALU............................................................................................ 28
Flash Program Memory.................................................................................. 29
Structure................................................................................................................................. 29
Special Vectors...................................................................................................................... 29
Look-up Table ........................................................................................................................ 29
Table Program Example......................................................................................................... 30
In Circuit Programming – ICP................................................................................................ 31
On-Chip Debug Support – OCDS.......................................................................................... 32
Rev. 1.10
2 December 14, 2017



Holtek Semiconductor BH67F5245
BH67F5245
24-Bit Delta Sigma A/D Flash MCU
with LCD and Touch Key
RAM Data Memory.......................................................................................... 33
Structure................................................................................................................................. 33
General Purpose Data Memory............................................................................................. 33
Special Purpose Data Memory.............................................................................................. 34
Special Function Register Description......................................................... 35
Indirect Addressing Registers – IAR0, IAR1, IAR2................................................................ 35
Memory Pointers – MP0, MP1L, MP1H, MP2L, MP2H.......................................................... 35
Accumulator – ACC ............................................................................................................... 36
Program Counter Low Register – PCL .................................................................................. 37
Look-up Table Registers – TBLP, TBHP, TBLH ..................................................................... 37
Status Register – STATUS .................................................................................................... 37
EEPROM Data Memory................................................................................... 39
EEPROM Data Memory Structure......................................................................................... 39
EEPROM Registers............................................................................................................... 39
Reading Data from the EEPROM.......................................................................................... 40
Writing Data to the EEPROM................................................................................................. 41
Write Protection...................................................................................................................... 41
EEPROM Interrupt................................................................................................................. 41
Programming Considerations................................................................................................. 42
Oscillators....................................................................................................... 43
Oscillator Overview................................................................................................................ 43
System Clock Configurations ................................................................................................ 43
Internal RC Oscillator – HIRC ............................................................................................... 44
Internal 32kHz Oscillator – LIRC............................................................................................ 44
Operating Modes and System Clocks.......................................................... 44
System Clocks....................................................................................................................... 44
System Operation Modes....................................................................................................... 45
Control Registers................................................................................................................... 46
Operating Mode Switching..................................................................................................... 48
Standby Current Considerations............................................................................................ 52
Wake-up................................................................................................................................. 52
Watchdog Timer.............................................................................................. 53
Watchdog Timer Clock Source............................................................................................... 53
Watchdog Timer Control Register.......................................................................................... 53
Watchdog Timer Operation.................................................................................................... 54
Reset and Initialisation .................................................................................. 55
Reset Functions..................................................................................................................... 55
Reset Initial Conditions ......................................................................................................... 58
Input/Output Ports ......................................................................................... 61
Pull-high Resistors................................................................................................................. 61
Port A Wake-up...................................................................................................................... 62
I/O Port Control Registers...................................................................................................... 62
I/O Port Source Current Control............................................................................................. 63
Pin-shared Functions............................................................................................................. 64
Rev. 1.10
3 December 14, 2017







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