Flash MCU. BH66F5232 Datasheet

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BH66F5232 Datasheet
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Part BH66F5232
Description 24-Bit Delta Sigma A/D Flash MCU
Feature BH66F5232; 24-Bit Delta Sigma A/D Flash MCU BH66F5232 Revision: V1.10 Date: �D�e�c�e�mb��e�r�1��4,���2�0�1�7 B.
Manufacture Holtek Semiconductor
Datasheet
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Holtek Semiconductor BH66F5232
24-Bit Delta Sigma A/D Flash MCU
BH66F5232
Revision: V1.10 Date: �D�e�c�e�mb��e�r�1��4,���2�0�1�7



Holtek Semiconductor BH66F5232
BH66F5232
24-Bit Delta Sigma A/D Flash MCU
Table of Contents
Features................................................................................................................. 6
CPU Features...............................................................................................................................6
Peripheral Features.......................................................................................................................6
General Description.............................................................................................. 7
Block Diagram....................................................................................................... 8
Pin Assignment..................................................................................................... 8
Pin Description..................................................................................................... 9
Absolute Maximum Ratings............................................................................... 10
D.C. Characteristics............................................................................................ 10
Operating Voltage Characteristics ..............................................................................................10
Standby Current Characteristics................................................................................................. 11
Operating Current Characteristics............................................................................................... 11
A.C. Characteristics............................................................................................ 12
High Speed Internal Oscillator – HIRC – Frequency Accuracy...................................................12
Low Speed Internal Oscillator Characteristics – LIRC................................................................12
Operating Frequency Characteristic Curves...............................................................................13
System Start Up Time Characteristics .......................................................................................13
Input/Output Characteristics............................................................................. 14
Memory Characteristics..................................................................................... 14
LDO+PGA+ADC+VCM Electrical Characteristics............................................ 15
Effective Number of Bits (ENOB)................................................................................................17
Effective Number of Bits (ENOB)................................................................................................17
LVR/LVD Electrical Characteristics................................................................... 17
Power-on Reset Characteristics........................................................................ 18
System Architecture........................................................................................... 19
Clocking and Pipelining...............................................................................................................19
Program Counter.........................................................................................................................20
Stack...........................................................................................................................................20
Arithmetic and Logic Unit – ALU.................................................................................................21
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
Data Memory....................................................................................................... 25
Structure......................................................................................................................................25
General Purpose Data Memory..................................................................................................25
Special Purpose Data Memory...................................................................................................26
Rev. 1.10
2 December 14, 2017



Holtek Semiconductor BH66F5232
BH66F5232
24-Bit Delta Sigma A/D Flash MCU
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
EEPROM Data Memory....................................................................................... 31
EEPROM Data Memory Structure..............................................................................................31
EEPROM Registers....................................................................................................................31
Reading Data from the EEPROM...............................................................................................32
Writing Data to the EEPROM......................................................................................................33
Write Protection...........................................................................................................................33
EEPROM Interrupt......................................................................................................................33
Programming Considerations......................................................................................................33
Oscillators........................................................................................................... 35
Oscillator Overview.....................................................................................................................35
System Clock Configurations......................................................................................................35
Internal High Speed RC Oscillator – HIRC.................................................................................36
Internal 32kHz Oscillator – LIRC.................................................................................................36
Operating Modes and System Clocks.............................................................. 36
System Clocks............................................................................................................................36
System Operation Modes............................................................................................................37
Control Registers........................................................................................................................38
Operating Mode Switching..........................................................................................................40
Standby Current Considerations.................................................................................................44
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
I/O Pin Structures........................................................................................................................56
Programming Considerations......................................................................................................57
Timer Modules – TM........................................................................................... 57
Introduction.................................................................................................................................57
Rev. 1.10
3 December 14, 2017







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