SN8P1700 Datasheet, PDF (121/145 Pages) SONiX Technology Company – 8-Bit Micro-Controller

SN8P1700
8-bit micro-controller build-in 12-bit ADC
12 _{8-CHANNEL ANALOG TO DIGITAL}
CONVERTER
OVERVIEW
This analog to digital converter of SN8P1700 has 8-input sources with up to 4096-step resolution to transfer analog
signal into 12-bits digital data. The sequence of ADC operation is to select input source (AIN0 ~ AIN7) 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 value output in ADB register. This ADC circuit can select between 8-bit and 12-bit resolution operation by
programming ADLEN bit in ADR register.
AIN0/P4.0
AIN1/P4.1
AIN2/P4.2
AIN3/P4.3
AIN4/P4.4
AIN5/P4.5
A/D
CONVERTER
8/12
(ADC)
AIN6/P4.6
AIN7/P4.7
Figure 12-1. AD Converter Function Diagram
Note: For 8-bit resolution the conversion time is 12 steps.
For 12-bit resolution the conversion time is 16 steps.
Note: The analog input level must be between the AVREFH and AVSS.
Note: The AVREFH level must be between the AVDD and AVSS.
SONiX TECHNOLOGY CO., LTD
Page 121
Revision 1.94