User manual

...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 695
www.energymicro.com
Bit Name Reset Access Description
Value Mode Description
4 16CYCLES 16 ADC_CLK cycles acquisition time for single sample
5 32CYCLES 32 ADC_CLK cycles acquisition time for single sample
6 64CYCLES 64 ADC_CLK cycles acquisition time for single sample
7 128CYCLES 128 ADC_CLK cycles acquisition time for single sample
8 256CYCLES 256 ADC_CLK cycles acquisition time for single sample
19 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
18:16 REF 0x0 RW Single Sample Reference Selection
Select reference to ADC single sample mode.
Value Mode Description
0 1V25 Internal 1.25 V reference
1 2V5 Internal 2.5 V reference
2 VDD Buffered VDD
3 5VDIFF Internal differential 5 V reference
4 EXTSINGLE Single ended external reference from pin 6
5 2XEXTDIFF Differential external reference, 2x(pin 6 - pin 7)
6 2XVDD Unbuffered 2xVDD
15:12 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
11:8 INPUTSEL 0x0 RW Single Sample Input Selection
Select input to ADC single sample mode in either single ended mode or differential mode.
DIFF = 0
Mode Value Description
CH0 0 ADCn_CH0
CH1 1 ADCn_CH1
CH2 2 ADCn_CH2
CH3 3 ADCn_CH3
CH4 4 ADCn_CH4
CH5 5 ADCn_CH5
CH6 6 ADCn_CH6
CH7 7 ADCn_CH7
TEMP 8 Temperature reference
VDDDIV3 9 VDD/3
VDD 10 VDD
VSS 11 VSS
VREFDIV2 12 VREF/2
DAC0OUT0 13 DAC0 output 0
DAC0OUT1 14 DAC0 output 1
DIFF = 1
Mode Value Description
CH0CH1 0 Positive input: ADCn_CH0 Negative input: ADCn_CH1
CH2CH3 1 Positive input: ADCn_CH2 Negative input: ADCn_CH3
CH4CH5 2 Positive input: ADCn_CH4 Negative input: ADCn_CH5
CH6CH7 3 Positive input: ADCn_CH6 Negative input: ADCn_CH7
DIFF0 4 Differential 0 (Short between positive and negative
inputs)
7:6 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
5:4 RES 0x0 RW Single Sample Resolution Select
Select single sample conversion resolution.
Value Mode Description
0 12BIT 12-bit resolution
1 8BIT 8-bit resolution
2 6BIT 6-bit resolution