Flash MCU. BH45F0031 Datasheet

BH45F0031 MCU. Datasheet pdf. Equivalent

BH45F0031 Datasheet
Recommendation BH45F0031 Datasheet
Part BH45F0031
Description Earphone Interface Bridge Flash MCU
Feature BH45F0031; Earphone Interface Bridge Flash MCU BH45F0031 Revision: V1.01 Date: April 11, 2017 BH45F0031 Earpho.
Manufacture Holtek Semiconductor
Datasheet
Download BH45F0031 Datasheet




Holtek Semiconductor BH45F0031
Earphone Interface Bridge Flash MCU
BH45F0031
Revision: V1.01 Date: April 11, 2017



Holtek Semiconductor BH45F0031
BH45F0031
Earphone Interface Bridge Flash MCU
Table of Contents
Features............................................................................................................. 6
CPU Features.......................................................................................................................... 6
Peripheral Features.................................................................................................................. 6
General Description.......................................................................................... 7
Block Diagram................................................................................................... 7
Pin Assignment................................................................................................. 8
Pin Description................................................................................................. 8
Absolute Maximum Ratings............................................................................. 9
D.C. Characteristics........................................................................................ 10
Operating Voltage Characteristics.......................................................................................... 10
Standby Current Characteristics............................................................................................ 10
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
LVD & LVR Electrical Characteristics........................................................... 15
Sine Wave Generator Electrical Characteristics.......................................... 15
Over Voltage Protection Electrical Characteristics..................................... 16
Power-on Reset 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 ........................................................................................................................ 20
Table Program Example......................................................................................................... 21
In Circuit Programming – ICP................................................................................................ 22
On-Chip Debug Support – OCDS.......................................................................................... 23
RAM Data Memory.......................................................................................... 24
Structure................................................................................................................................. 24
General Purpose Data Memory............................................................................................. 24
Special Purpose Data Memory.............................................................................................. 24
Rev. 1.01
2 April 11, 2017



Holtek Semiconductor BH45F0031
BH45F0031
Earphone Interface Bridge Flash MCU
Special Function Register Description......................................................... 26
Indirect Addressing Registers – IAR0, IAR1.......................................................................... 26
Memory Pointers – MP0, MP1............................................................................................... 26
Accumulator – ACC ............................................................................................................... 27
Program Counter Low Register – PCL .................................................................................. 27
Look-up Table Registers – TBLP, TBLH ................................................................................ 27
Status Register – STATUS .................................................................................................... 27
Oscillators....................................................................................................... 29
Oscillator Overview ............................................................................................................... 29
System Clock Configurations................................................................................................. 29
Internal RC Oscillator – HIRC ............................................................................................... 30
Internal 32kHz Oscillator – LIRC............................................................................................ 30
Supplementary Oscillator....................................................................................................... 30
Operating Modes and System Clocks.......................................................... 31
System Clocks....................................................................................................................... 31
System Operation Modes....................................................................................................... 32
Control Registers................................................................................................................... 33
Operating Mode Switching..................................................................................................... 35
Standby Current Considerations............................................................................................ 39
Wake-up................................................................................................................................. 39
Watchdog Timer.............................................................................................. 40
Watchdog Timer Clock Source............................................................................................... 40
Watchdog Timer Control Register.......................................................................................... 40
Watchdog Timer Operation.................................................................................................... 41
Reset and Initialisation .................................................................................. 42
Reset Functions..................................................................................................................... 42
Reset Initial Conditions ......................................................................................................... 44
Input/Output Ports ......................................................................................... 46
Pull-high Resistors................................................................................................................. 46
Port A Wake-up...................................................................................................................... 46
I/O Port Control Registers...................................................................................................... 47
Pin-shared Functions............................................................................................................. 47
I/O Pin Structures................................................................................................................... 49
Programming Considerations ................................................................................................ 49
Timer Modules – TM....................................................................................... 50
Introduction............................................................................................................................ 50
TM Operation......................................................................................................................... 50
TM Clock Source.................................................................................................................... 50
TM Interrupts.......................................................................................................................... 51
TM External Pins.................................................................................................................... 51
TM Input/Output Pin Selection............................................................................................... 51
Programming Considerations................................................................................................. 52
Rev. 1.01
3 April 11, 2017







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