Analog-to-digital converters (ADC) RM0351
520/1693 DocID024597 Rev 3
16.5.11 ADC regular sequence register 1 (ADCx_SQR1)
Address offset: 0x30
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. SQ4[4:0] Res. SQ3[4:0] Res. SQ2[4]
rw rw rw rw rw rw rw rw rw rw rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SQ2[3:0] Res. SQ1[4:0] Res. Res. L[3:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:29 Reserved, must be kept at reset value.
Bits 28:24 SQ4[4:0]: 4th conversion in regular sequence
These bits are written by software with the channel number (0..18) assigned as the 4th in the
regular conversion sequence.
Note: Software is allowed to write these bits only when ADSTART=0 (which ensures that no
regular conversion is ongoing).
Bit 23 Reserved, must be kept at reset value.
Bits 22:18 SQ3[4:0]: 3rd conversion in regular sequence
These bits are written by software with the channel number (0..18) assigned as the 3rd in the
regular conversion sequence.
Note: Software is allowed to write these bits only when ADSTART=0 (which ensures that no
regular conversion is ongoing).
Bit 17 Reserved, must be kept at reset value.
Bits 16:12 SQ2[4:0]: 2nd conversion in regular sequence
These bits are written by software with the channel number (0..18) assigned as the 2nd in
the regular conversion sequence.
Note: Software is allowed to write these bits only when ADSTART=0 (which ensures that no
regular conversion is ongoing).
Bit 11 Reserved, must be kept at reset value.
Bits 10:6 SQ1[4:0]: 1st conversion in regular sequence
These bits are written by software with the channel number (0..18) assigned as the 1st in the
regular conversion sequence.
Note: Software is allowed to write these bits only when ADSTART=0 (which ensures that no
regular conversion is ongoing).
Bits 5:4 Reserved, must be kept at reset value.
Bits 3:0 L[3:0]: Regular channel sequence length
These bits are written by software to define the total number of conversions in the regular
channel conversion sequence.
0000: 1 conversion
0001: 2 conversions
...
1111: 16 conversions
Note: Software is allowed to write these bits only when ADSTART=0 (which ensures that no
regular conversion is ongoing).
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