Samsung S3C8245 User Manual

A/D Converter Data Register, High Byte (ADDATAH)

F8H, Set 1, Bank 1, Read Only

.7

.6

.5

.4

.3

.2

.1

.0

MSB

LSB

A/D Converter Data Register, Low Byte (ADDATAL)

F9H, Set 1, Bank 1, Read Only

.1

.0

MSB

LSB

In the ADC function block, the analog input voltage level is compared to the reference voltage. The analog input level
must remain within the range AV

SS

 to AV

REF

 (usually, AV

REF

 

 =  V

DD

).

Different reference voltage levels are generated internally along the resistor tree during the analog conversion process
for each conversion step. The reference voltage level for the first conversion bit is always 1/2 AV

REF

.