CONTROL REGISTERSS3C9228/P9228

P1CON – Port 1 Control Register

EFH

Bit Identifier

RESET Value

Read/Write

.7-.6

.7

.6

.5

 

.4

.3

.2

.1

.0

 

 

 

 

 

 

 

 

 

0

0

0

 

0

0

0

0

0

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

P1.3/AD3/INT Configuration Bits

 

 

 

 

 

 

 

 

 

 

 

 

0 0

Schmitt trigger input

 

 

 

 

 

01 Push-pull output

10 N-channel open-drain output

1 1 Alternative function (ADC mode)

.5-.4

P1.2/AD2/INT Configuration Bits

 

0

0

Schmitt trigger input

 

 

 

 

 

0

1

Push-pull output

 

 

 

 

 

1

0

N-channel open-drain output

 

 

 

 

 

1

1

Alternative function (ADC mode)

 

 

 

 

.3-.2

P1.1/AD1/INT Configuration Bits

 

0

0

Schmitt trigger input

 

 

 

 

 

0

1

Push-pull output

 

 

 

 

 

1

0

N-channel open-drain output

 

 

 

 

 

1

1

Alternative function (ADC mode)

 

 

 

 

.1-.0

P1.0/AD0/INT Configuration Bits

 

0

0

Schmitt trigger input

 

 

 

 

 

0

1

Push-pull output

 

 

 

 

 

1

0

N-channel open-drain output

 

 

 

 

 

1

1

Alternative function (ADC mode)

 

 

 

 

4-18

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Image 70
Samsung S3C9228/P9228 P1CON Port 1 Control Register, Efh, P1.2/AD2/INT Configuration Bits, P1.1/AD1/INT Configuration Bits