![Geehy SEMICONDUCTOR APM32F405 Series User Manual Download Page 616](http://html1.mh-extra.com/html/geehy-semiconductor/apm32f405-series/apm32f405-series_user-manual_573630616.webp)
www.geehy.com Page 615
Conversion mode of single ADC and one group of channels
Single ADC and multiple channels
Enable the scan mode under single-ADC multi-channel condition, the
conversion is triggered by software rather than externally, the result of data
conversion is right aligned, and the data of ADC conversion results are
transmitted to the memory by DMA.
Classification of analog input channels
Regular channel group
The regular group consists of 16 channels
Regular channel conversion sequence is determined by the register
ADC_REGSEQx
The total number of conversion channels of regular group is
determined by REGSEQLEN bit of configuration register
ADC_REGSEQ1
Injected channel group
The injected group consists of 4 channels
Injected channel conversion sequence is determined by the register
ADC_INJSEQ
The total number of conversion channels of injected group is
determined by INJSEQLEN bit of configuration register ADC_INJSEQ
Internal input channel
Temperature sensor:
The temperature sensor is used to measure the internal temperature
of the chip
The temperature sensor selects ADC1_IN16 input channel
Start through TSVREFEN bit of the configuration register
ADC_CTRL2
Internal reference voltage V
REFINT
:
The internal reference voltage is used to provide a stable voltage
output for ADC
Internal reference voltage V
REFINT
is used to select ADC1_IN17 input
channel
Internal backup voltage V
BAT
:
Internal backup voltage V
BAT
is used to select ADC1_IN18 input
channel