Flash MCU. BC68F2140 Datasheet

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BC68F2140 Datasheet
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Part BC68F2140
Description Sub-1GHz RF Transmitter Flash MCU
Feature BC68F2140; Sub-1GHz RF Transmitter Flash MCU BC68F2130/BC68F2140 Revision: V1.10 Date: �M�a�y�1��9,���2�0�1�7 .
Manufacture Holtek Semiconductor
Datasheet
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Holtek Semiconductor BC68F2140
Sub-1GHz RF Transmitter Flash MCU
BC68F2130/BC68F2140
Revision: V1.10 Date: �M�a�y�1��9,���2�0�1�7



Holtek Semiconductor BC68F2140
BC68F2130/BC68F2140
Sub-1GHz RF Transmitter Flash MCU
Table of Contents
Features................................................................................................................. 6
CPU Features...............................................................................................................................6
Peripheral Features.......................................................................................................................6
RF Transmitter Features...............................................................................................................7
General Description.............................................................................................. 7
Block Diagram....................................................................................................... 8
Selection Table...................................................................................................... 8
Pin Assignment..................................................................................................... 9
Pin Description..................................................................................................... 9
Absolute Maximum Ratings............................................................................... 12
D.C. Characteristics............................................................................................ 12
A.C. Characteristics............................................................................................ 13
LVD/LVR Electrical Characteristics................................................................... 14
RF Transmitter Electrical Characteristics........................................................ 14
Power-on Reset Characteristics........................................................................ 15
System Architecture........................................................................................... 16
Clocking and Pipelining...............................................................................................................16
Program Counter.........................................................................................................................17
Stack...........................................................................................................................................17
Arithmetic and Logic Unit – ALU.................................................................................................18
Flash Program Memory...................................................................................... 19
Structure......................................................................................................................................19
Special Vectors...........................................................................................................................19
Look-up Table..............................................................................................................................19
Table Program Example..............................................................................................................20
In Circuit Programming – ICP.....................................................................................................21
On-Chip Debug Support – OCDS...............................................................................................22
In Application Programming – IAP..............................................................................................22
Data Memory....................................................................................................... 30
Structure......................................................................................................................................30
Data Memory Addressing............................................................................................................31
General Purpose Data Memory..................................................................................................31
Special Purpose Data Memory...................................................................................................31
Special Function Register Description............................................................. 33
Indirect Addressing Registers – IAR0, IAR1, IAR2.....................................................................33
Memory Pointers – MP0, MP1L, MP1H, MP2L, MP2H...............................................................33
Accumulator – ACC.....................................................................................................................34
Program Counter Low Register – PCL........................................................................................35
Rev. 1.10
2 May 19, 2017



Holtek Semiconductor BC68F2140
BC68F2130/BC68F2140
Sub-1GHz RF Transmitter Flash MCU
Look-up Table Registers – TBLP, TBHP, TBLH...........................................................................35
Status Register – STATUS..........................................................................................................35
Oscillators........................................................................................................... 37
Oscillator Overview.....................................................................................................................37
System Clock Configurations......................................................................................................37
External Crystal/Ceramic Oscillator – HXT.................................................................................38
Internal High Speed RC Oscillator – HIRC.................................................................................39
Internal 32kHz Oscillator – LIRC.................................................................................................39
Operating Modes and System Clocks.............................................................. 39
System Clocks............................................................................................................................39
System Operation Modes............................................................................................................40
Control Registers........................................................................................................................42
Operating Mode Switching..........................................................................................................45
Standby Current Considerations.................................................................................................50
Wake-up......................................................................................................................................50
Watchdog Timer.................................................................................................. 52
Watchdog Timer Clock Source....................................................................................................52
Watchdog Timer Control Register...............................................................................................52
Watchdog Timer Operation.........................................................................................................53
Reset and Initialisation....................................................................................... 54
Reset Functions..........................................................................................................................54
Reset Initial Conditions...............................................................................................................58
Input/Output Ports.............................................................................................. 61
Pull-high Resistors......................................................................................................................62
Port A Wake-up...........................................................................................................................62
I/O Port Control Registers...........................................................................................................63
Pin-shared Functions..................................................................................................................63
I/O Pin Structures........................................................................................................................65
Programming Considerations......................................................................................................66
Timer Modules – TM........................................................................................... 66
Introduction.................................................................................................................................66
TM Operation..............................................................................................................................67
TM Clock Source.........................................................................................................................67
TM Interrupts...............................................................................................................................67
TM External Pins.........................................................................................................................67
TM Input/Output Pin Selection....................................................................................................68
Programming Considerations......................................................................................................68
Compact Type TM – CTM................................................................................... 70
Compact TM Operation...............................................................................................................70
Compact Type TM Register Description.....................................................................................70
Compact Type TM Operating Modes..........................................................................................74
Rev. 1.10
3 May 19, 2017







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