SN8P275X Series
8-bit micro-controller build-in 12-bit ADC
SONiX TECHNOLOGY CO., LTD
Page 137
Version 0.7
11.3 ADR REGISTERS
0B3H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ADR
ADCKS2 ADCKS1 ADLEN ADCKS0
ADB3 ADB2 ADB1 ADB0
Read/Write
R/W R/W R/W R/W R
R
R
R
After
reset
0 0 0 0 - - - -
Bit 7,6,4
ADCKS [2:0]:
ADC’s clock source select bit.
ADCKS2 ADCKS1 ADCKS0 ADC Clock Source
0 0 0
Fcpu/16
0 0 1
Fcpu/8
0 1 0
Fcpu/1
0 1 1
Fcpu/2
1 0 0
Fcpu/64
1 0 1
Fcpu/32
1 1 0
Fcpu/4
1 1 1
Reserved
Bit 5
ADLEN:
ADC’s resolution select bits.
0 = 8-bit
1 = 12-bit.
Bit [3:0]
ADB [3:0]:
ADC data buffer.
ADB11~ADB4 bits for 8-bit ADC
ADB11~ADB0 bits for 12-bit ADC
Note: ADC buffer ADR [3:0] initial value after reset is unknown.
