EM78P142 查看數據表（PDF） - ELAN Microelectronics

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EM78P142

8-Bit Microprocessor with OTP ROM

ELAN Microelectronics 

EM78P142

8-Bit Microprocessor with OTP ROM

6.1.8 R8 (AISR: ADC Input Select Register)

The AISR register individually defines the I/O Port as analog input or as digital I/O.

Bit 7

‘0’

Bit 6

ADE6

Bit 5

ADE5

Bit 4

ADE4

Bit 3

ADE3

Bit 2

ADE2

Bit 1

ADE1

Bit 0

ADE0

Bit 7:

This bit must be set to “0” all the time.

Bit 6 (ADE6): AD converter enable bit of P55 pin

0 = Disable ADC6, P55 functions as I/O pin

1 = Enable ADC6 to function as analog input pin

Bit 5 (ADE5): AD converter enable bit of P70 pin

0 = Disable ADC5, P70 functions as I/O pin

1 = Enable ADC5 to function as analog input pin

Bit 4 (ADE4): AD converter enable bit of P67 pin

0 = Disable ADC4, P67 functions as I/O pin

1 = Enable ADC4 to function as analog input pin

Bit 3 (ADE3): AD converter enable bit of P53 pin

0 = Disable ADC3, P53 functions as I/O pin

1 = Enable ADC3 to function as analog input pin

Bit 2 (ADE2): AD converter enable bit of P52 pin

0 = Disable ADC2, P52 functions as I/O pin

1 = Enable ADC2 to function as analog input pin

Bit 1 (ADE1): AD converter enable bit of P51 pin

0 = Disable ADC1, P51 functions as I/O pin

1 = Enable ADC1 to function as analog input pin

Bit 0 (ADE0): AD converter enable bit of P50 pin

0 = Disable ADC0, P50 functions as I/O pin

1 = Enable ADC0 to function as analog input pin

10 •

Product Specification (V1.0) 01.25.2008

(This specification is subject to change without further notice)

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