Flash MCU. BC68F2420 Datasheet

BC68F2420 MCU. Datasheet pdf. Equivalent

BC68F2420 Datasheet
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Part BC68F2420
Description 315/433MHz RF Super-regenerative Receiver SoC Flash MCU
Feature BC68F2420; 315/433MHz RF Super-regenerative Receiver SoC Flash MCU BC68F2420 Revision: V1.00 Date: �M�a�y��24�,.
Manufacture Holtek Semiconductor
Datasheet
Download BC68F2420 Datasheet




Holtek Semiconductor BC68F2420
315/433MHz RF Super-regenerative Receiver SoC Flash MCU
BC68F2420
Revision: V1.00 Date: �M�a�y��24�,���2�0�1�7



Holtek Semiconductor BC68F2420
BC68F2420
315/433MHz RF Super-regenerative
Receiver SoC Flash MCU
Table of Contents
Features............................................................................................................. 6
CPU Features.......................................................................................................................... 6
Peripheral Features.................................................................................................................. 6
RF Receiver Features.............................................................................................................. 7
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
System Start Up Time Characteristics................................................................................... 13
Input/Output Characteristics......................................................................... 14
Memory Characteristics................................................................................. 15
LVD/LVR Electrical Characteristics............................................................... 15
RF Receiver 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
Data Memory................................................................................................... 24
Structure................................................................................................................................. 24
General Purpose Data Memory............................................................................................. 24
Special Purpose Data Memory.............................................................................................. 24
Rev. 1.00
2 May 24, 2017



Holtek Semiconductor BC68F2420
BC68F2420
315/433MHz RF Super-regenerative
Receiver SoC Flash MCU
Special Function Register Description......................................................... 26
Indirect Addressing Register – IAR0, IAR1............................................................................ 26
Memory Pointers – MP0, MP1............................................................................................... 26
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 RC Oscillator – HIRC................................................................................................ 35
Internal 32kHz Oscillator – LIRC............................................................................................ 35
Operating Modes and System Clocks.......................................................... 36
System Clocks....................................................................................................................... 36
System Operation Modes....................................................................................................... 37
Control Register..................................................................................................................... 38
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 Current Control Registers............................................................................. 53
I/O Port Output Slew Rate Control Registers......................................................................... 53
Pin-shared Functions............................................................................................................. 54
I/O Pin Structures................................................................................................................... 55
Programming Considerations ................................................................................................ 56
Rev. 1.00
3 May 24, 2017







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