SN8P2711A
8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 103
Version 0.1
9
9
9
5+1 CHANNEL ANALOG TO DIGITAL
CONVERTER
9.1 OVERVIEW
This analog to digital converter has 5 external sources (AIN0~AIN4) and one internal source (AIN5: Internal 1/4 VDD)
with 4096-step resolution to transfer analog signal into 12-bits digital data. The sequence of ADC operation is to select
input source (AIN0 ~ AIN5) at first, then set GCHS and ADS bit to “1” to start conversion. When the conversion is
complete, the ADC circuit will set EOC bit to “1” and final 12-bits value output in ADB and ADR low-nibble registers.
AIN0/P4.0
AIN1/P4.1
AIN2/P4.2
AIN3/P4.3
AIN4/P4.4
AIN5
(Internal 1/4 VDD)
A/D
CONVERTER
(ADC)
DA
TA
BUS
12-Bits