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BS87D20A-3 Datasheet

Touch A/D Flash MCU

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Touch A/D Flash MCU with OCVP
BS87B12A-3/BS87C16A-3/BS87D20A-3
Revision: V1.20 Date: �D�e�c�e�mb��e�r�0��5,��2�0�1��6


  Holtek Semiconductor Electronic Components Datasheet  

BS87D20A-3 Datasheet

Touch A/D Flash MCU

No Preview Available !

BS87B12A-3/BS87C16A-3/BS87D20A-3
Touch A/D Flash MCU with OCVP
Table of Contents
Features............................................................................................................. 7
CPU Features.......................................................................................................................... 7
Peripheral Features.................................................................................................................. 7
General Description.......................................................................................... 8
Selection Table.................................................................................................. 8
Block Diagram................................................................................................... 9
Pin Assignment................................................................................................. 9
Pin Descriptions............................................................................................. 13
Absolute Maximum Ratings........................................................................... 22
D.C. Characteristics........................................................................................ 23
Operating Voltage Characteristics.......................................................................................... 23
Standby Current Characteristics............................................................................................ 23
Operating Current Characteristics.......................................................................................... 24
A.C. Characteristics........................................................................................ 25
High Speed Internal Oscillator – HIRC – Frequency Accuracy.............................................. 25
Low Speed Oscillators Characteristics – LIRC & LXT *......................................................... 25
Operating Frequency Characteristic Curves.......................................................................... 26
System Start Up Time Characteristics................................................................................... 26
Input/Output Characteristics......................................................................... 27
Memory Characteristics................................................................................. 27
LVD/LVR Electrical Characteristics............................................................... 28
A/D Converter Characteristics....................................................................... 28
Reference Voltage Characteristics................................................................ 28
Touch Key Electrical Characteristics............................................................ 29
OCVP Electrical Characteristics.................................................................... 31
Software Controlled LCD Electrical Characteristics................................... 31
I2C Characteristics.......................................................................................... 32
Power-on Reset Characteristics.................................................................... 32
System Architecture....................................................................................... 33
Clocking and Pipelining.......................................................................................................... 33
Program Counter.................................................................................................................... 34
Stack...................................................................................................................................... 34
Arithmetic and Logic Unit – ALU............................................................................................ 35
Flash Program Memory.................................................................................. 36
Structure................................................................................................................................. 36
Special Vectors...................................................................................................................... 36
Look-up Table......................................................................................................................... 37
Table Program Example......................................................................................................... 37
Rev. 1.20
2 December 05, 2016


Part Number BS87D20A-3
Description Touch A/D Flash MCU
Maker Holtek Semiconductor
Total Page 30 Pages
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