BS85B12-3 HOLTEK [Holtek Semiconductor Inc], BS85B12-3 Datasheet - Page 2

• Manufacturer Part Number: BS85B12-3
• Description: Touch Key Flash Type 8-Bit MCU with LCD/LED Driver
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Table of Contents
Technical Document ...........................................................................1
Features ...............................................................................................1
General Description ............................................................................2
Selection Table ....................................................................................2
Block Diagram .....................................................................................2
Pin Assignment ...................................................................................3
Pin Description ....................................................................................4
Absolute Maximum Ratings .............................................................11
D.C. Characteristics ..........................................................................11
A.C. Characteristics ..........................................................................13
Power-on Reset Characteristics ......................................................14
Oscillator Temperature/Frequency Characteristics .......................14
System Architecture .........................................................................17
Flash Program Memory ....................................................................21
RAM Data Memory.............................................................................22
CPU Features ........................................................................................................1
Peripheral Features ................................................................................................1
BS85B12-3.............................................................................................................4
BS85C20-3.............................................................................................................7
Clocking and Pipelining ........................................................................................17
Program Counter..................................................................................................18
Stack ....................................................................................................................18
Arithmetic and Logic Unit
Structure...............................................................................................................21
Special Vectors.....................................................................................................22
Look-up Table.......................................................................................................22
Table Program Example.....................................................................................22
In Circuit Programming.........................................................................................23
Structure...............................................................................................................22
ALU ...........................................................................19
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Contents