Flash MCU. BC68F0031 Datasheet

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BC68F0031 Datasheet
Recommendation BC68F0031 Datasheet
Part BC68F0031
Description I/O RF Transparent Transmission Flash MCU
Feature BC68F0031; I/O RF Transparent Transmission Flash MCU BC68F0031 Revision: V1.01 Date: April 11, 2017 BC68F0031 .
Manufacture Holtek Semiconductor
Datasheet
Download BC68F0031 Datasheet




Holtek Semiconductor BC68F0031
I/O RF Transparent Transmission Flash MCU
BC68F0031
Revision: V1.01 Date: April 11, 2017



Holtek Semiconductor BC68F0031
BC68F0031
I/O RF Transparent Transmission 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.........................................................................................11
Operating Voltage Characteristics...........................................................................................11
Operating Current Characteristics...........................................................................................11
Standby Current Characteristics............................................................................................ 12
A.C. Characteristics........................................................................................ 12
High Speed Internal Oscillator – HIRC – Frequency Accuracy.............................................. 12
Low Speed Internal Oscillator Characteristics – LIRC........................................................... 13
System Start Up Time Characteristics................................................................................... 13
Memory Characteristics................................................................................. 14
LVR/LVD Electrical Characteristics............................................................... 14
Input/Output Characteristics......................................................................... 15
Power-on Reset Characteristics.................................................................... 16
System Architecture....................................................................................... 17
Clocking and Pipelining.......................................................................................................... 17
Program Counter.................................................................................................................... 18
Stack...................................................................................................................................... 18
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
Data Memory................................................................................................... 24
Structure................................................................................................................................. 24
General Purpose Data Memory............................................................................................. 24
Special Purpose Data Memory.............................................................................................. 25
Special Function Register Description......................................................... 26
Indirect Addressing Registers – IAR0, IAR1.......................................................................... 26
Memory Pointers – MP0, MP1............................................................................................... 26
Rev. 1.01
2 April 11, 2017



Holtek Semiconductor BC68F0031
BC68F0031
I/O RF Transparent Transmission Flash MCU
Program Memory Bank Pointer – BP..................................................................................... 27
Accumulator – ACC................................................................................................................ 27
Program Counter Low Register – PCL................................................................................... 27
Look-up Table Registers – TBLP, TBLH................................................................................. 27
Status Register – STATUS..................................................................................................... 28
EEPROM Data Memory................................................................................... 30
EEPROM Data Memory Structure......................................................................................... 30
EEPROM Registers............................................................................................................... 30
Reading Data from the EEPROM.......................................................................................... 32
Writing Data to the EEPROM................................................................................................. 32
Write Protection...................................................................................................................... 32
EEPROM Interrupt................................................................................................................. 32
Programming Considerations................................................................................................. 33
Oscillators....................................................................................................... 34
Oscillator Overview................................................................................................................ 34
System Clock Configurations................................................................................................. 34
Internal High Speed RC Oscillator – HIRC............................................................................ 35
Internal 32kHz Oscillator – LIRC............................................................................................ 35
Operating Modes and System Clocks.......................................................... 35
System Clocks....................................................................................................................... 35
System Operation Modes....................................................................................................... 36
Control Registers................................................................................................................... 37
Operating Mode Switching..................................................................................................... 39
Standby Current Considerations............................................................................................ 43
Wake-up................................................................................................................................. 43
Watchdog Timer.............................................................................................. 44
Watchdog Timer Clock Source............................................................................................... 44
Watchdog Timer Control Register.......................................................................................... 44
Watchdog Timer Operation.................................................................................................... 45
Reset and Initialisation................................................................................... 46
Reset Functions..................................................................................................................... 46
Reset Initial Conditions.......................................................................................................... 48
Input/Output Ports.......................................................................................... 51
Pull-high Resistors................................................................................................................. 51
I/O Port Wake-up................................................................................................................... 52
I/O Port Control Registers...................................................................................................... 52
I/O Port Output Slew Rate Control Registers......................................................................... 53
I/O Port Output Current Control Registers............................................................................. 53
Pin-shared Functions............................................................................................................. 54
I/O Pin Structures................................................................................................................... 57
Programming Considerations................................................................................................. 57
Rev. 1.01
3 April 11, 2017







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