Samsung 8-Bit CMOS Microcontroller, S3C9228/P9228 user manual Adcon A/D Converter Control Register

S3C9228/P9228CONTROL REGISTERS

ADCON — A/D Converter Control Register D0H

Bit Identifier

RESET Value

Read/Write

.7-.6

.5-.4

.7	.6	.5	.4	.3	.2	.1	.0
–	–	0	0	0	0	0	0
–	–	R/W	R/W	R	R/W	R/W	R/W

Not used for the S3C9228/P9228

A/D Input Pin Selection Bits

0 0 AD0 (P1.0)

01 AD1 (P1.1)

10 AD2 (P1.2)

1 1 AD3 (P1.3)

.3 End of Conversion Bit (Read-only)

0Conversion not complete

1Conversion complete

.2-.1 Clock Source Selection Bits

00 fxx/16

01 fxx/8

10 fxx/4

11 fxx

.0 Start or Enable Bit

0Disable operation

1Start operation (automatically disable operation after conversion complete)

4-5