HT86B40 datasheet(57/83 Pages) HOLTEK

57 / 83 page

HT86BXX/HT86BRXX

Rev. 1.70

February 22, 2010

Analog Switch

There are 8 analog switch lines in the microcontroller, labeled as K0 ~ K7, and the Analog Switch control register, which

is mapped to the data memory by option. All of these Analog Switch lines can be used together with the external RC

Oscillation Converter for C/R-F input keys.

A S C R R e g i s t e r

A n a l o g S w i t c h S e l e c t

b 7

b 0

K 0 o n , o t h e r s o f f

K 1 o n , o t h e r s o f f

K 2 o n , o t h e r s o f f

K 3 o n , o t h e r s o f f

K 4 o n , o t h e r s o f f

K 5 o n , o t h e r s o f f

K 6 o n , o t h e r s o f f

K 7 o n , o t h e r s o f f

A l l o f f , O S C o f f

U n d e f i n e d , r e a d a s z e r o

A S O N 3

A S O N 2 A S O N 1 A S O N 0

A S O N 2

A S O N 1

A S O N 0

Analog Switch Control Register

- ASCR

T . G . 2

T . G . 3

T . G . 4

T . G . 5

T . G . 6

T . G . 7

K 0

K 1

K 2

K 3

K 4

K 5

K 6

K 7

R C O U T

R R

R C

C C

T . G . 1

A S O N

T i m e r 4

T . G . 8

Analog Switch

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