Holtek BS82B12A-3 - Application Circuit

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Rev. 1.20 148 January 23, 2015 Rev. 1.20 149 January 23, 2015

BS82B12A-3/BS82C16A-3/BS82D20A-3

Touch Key 8-Bit Flash MCU with LED/LCD Driver

BS82B12A-3/BS82C16A-3/BS82D20A-3

Touch Key 8-Bit Flash MCU with LED/LCD Driver

Application Circuit

VDD

VSS

KEY1

0.1uF

I/O Pins

C Pins

KEY2

KEYn

UART Pins

SCOM&SSEG

Pins

XT1

XT2

OSC

Circuit

See Oscillator

Section

Main Page

Default Chapter1
- Cont�Ol Registe1
- Table of Contents2
- Ente�Ing the SLEEP Mode4
Features6
- CPU Feat6
- Pe�Iphe�Al Feat6
- Indi�Ect Add�Essing Registe�S - IAR0� IAR16
- P�Og�Amming Conside�Ations6
General Description7
Selection Table7
- Watchdog Time� Clock so7
- Watchdog Time� Cont�Ol Registe7
Block Diagram8
Pin Assignment8
- Acc�M�Lato� - ACC8
- P�Og�Am Co�Nte� Low Registe� - PCL8
- Look-�P Table Registe�S - TBLP� TBHP� TBLH8
- Watchdog Time� Ope�Ation8
- Reset F�Nctions9
Pin Descriptions10
Absolute Maximum Ratings17
D.C. Characteristics18
Characteristics20
Sensor Oscillator Electrical Characteristics21
Power-On Reset Characteristics24
System Architecture25
- Clocking and Pipelining25
- P�Og�Am Co�Nte26
- Stack27
- A�Ithmetic and Logic Unit - ALU27
Flash Program Memory28
- Special Vecto�S29
- Look-�P Table29
- On-Chip Deb�G S�Ppo�T - OCDS31
RAM Data Memory32
Special Function Register Description36
- Memo36
- Bank Pointe37
- Stat�S Registe� - STATUS39
EEPROM Data Memory41
- EEPROM Data Memo41
- EEPROM Registe�S41
- W�Iting Data to the EEPROM43
- EEPROM Inte43
- P�Og�Amming Conside�Ations44
Oscillator45
- Oscillato� Ove�View45
- System Clock Configurations45
- Inte�Nal RC Oscillato� - HIRC46
- Inte�Nal �2Khz Oscillato� - LIRC46
- Exte�Nal �2.768Khz C47
- LXT Oscillato� Low Powe� F�Nction48
Operating Modes and System Clocks48
- S�Stem Clocks48
- S�Stem Ope�Ation Modes50
- NORMAL Mode to SLOW Mode Switching53
- SLOW Mode to NORMAL Mode Switching54
- Ente�Ing the IDLE0 Mode55
- Wake56
Watchdog Timer57
Reset and Initialisation59
- Reset Initial Conditions61
Input/Output Ports65
- I/O Registe� List65
- P�Ll-High Resisto�S66
- Po�T a Wake-�P66
- I/O Po�T Cont�Ol Registe�S66
- I/O Pin St66
- P�Og�Amming Conside�Ations68
Timer Modules - TM69
- Int�Od�Ction69
- TM Ope�Ation69
- TM Clock so69
- TM Inte70
- TM Exte�Nal Pins70
- TM Inp�T/O�Tp�T Pin Cont�Ol Registe70
Compact Type TM - CTM074
- Compact TM Ope�Ation74
- Compact T�Pe TM Ope�Ating Modes79
- Compa�E Match O�Tp�T Mode79
- Time�/Co�Nte� Mode82
- PWM O�Tp�T Mode82
Periodic Type TM - PTM085
- Pe�Iodic T�Pe TM Registe� Desc�Iption86
- Pe�Iodic T�Pe TM Ope�Ating Modes90
- Compa�E Match O�Tp�T Mode90
- PWM O�Tp�T Mode93
- Single P�Lse Mode95
- Capt97
Touch Key Function99
- To�Ch Ke� St99
I 2 C Interface108
- I 2 C Inte�Face Ope�Ation108
- I 2 C Registe�S109
- I 2 C B�S Comm�Nication112
- I 2 C B�S Sta�T Signal113
- Slave Add�Ess113
- I 2 C B�S Read/W�Ite Signal114
- I 2 C B�S Slave Add�Ess Acknowledge Signal114
- I 2 C B�S Data and Acknowledge Signal114
- I 2 C Time-O�T Cont�Ol116
UART Interface117
- UART Exte�Nal Pin Inte�Facing117
- UART Data T�Ansfe� Scheme118
- UART Stat�S and Cont�Ol Registe�S118
- Ba�D Rate Gene�Ato124
- UART T�Ansmitte127
- UART Receive128
- Managing Receive� E129
- UART Powe� down and Wake132
Interrupts133
- Inte133
- Inte137
- Time Base Inte138
- TM Inte139
- EEPROM Inte139
- LVD Inte140
- To�Ch Ke� Inte140
- I 2 C Inte140
- UART Inte140
- Inte141
- P�Og�Amming Conside�Ations141
SCOM and SSEG Function for LCD142
- LCD Ope�Ation142
- LCD Bias Cont�Ol144
Low Voltage Detector - LVD146
- LVD Registe146
- LVD Ope�Ation147
Configuration Options148
Application Circuit149
Instruction Set150
- Inst150
- Logical and Rotate Ope�Ation151
- Bit Ope�Ations151
Instruction Set Summary152
Instruction Definition154
Package Information163
- 20-Pin SOP (�00Mil) O�Tline Dimensions164
- 28-Pin SOP (�00Mil) O�Tline Dimensions166
- 28-Pin SSOP (1�0Mil) O�Tline Dimensions167

Holtek BS82B12A-3 - Application Circuit

Table of Contents

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