Adc Injected Sequence Register (Adc_Jsqr) - ST STM32F100 Series Reference Manual

Analog-to-digital converter (ADC)

10.11.12 ADC injected sequence register (ADC_JSQR)

Address offset: 0x38
Reset value: 0x0000 0000
31 30 29
15 14 13
JSQ4_0 JSQ3[4:0]
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Bits 31:22 Reserved, must be kept at reset value.
Bits 21:20 JL[1:0]: Injected sequence length
Bits 19:15 JSQ4[4:0]: fourth conversion in injected sequence (when JL[1:0] = 3)
Note: Unlike a regular conversion sequence, if JL[1:0] length is less than four, the channels
Bits 14:10 JSQ3[4:0]: third conversion in injected sequence (when JL[1:0] = 3)
Bits 9:5 JSQ2[4:0]: second conversion in injected sequence (when JL[1:0] = 3)
Bits 4:0 JSQ1[4:0]: first conversion in injected sequence (when JL[1:0] = 3)
1. When JL=3 ( 4 injected conversions in the sequencer), the ADC converts the channels in this order:
JSQ1[4:0] >> JSQ2[4:0] >> JSQ3[4:0] >> JSQ4[4:0]
When JL=2 ( 3 injected conversions in the sequencer), the ADC converts the channels in this order:
JSQ2[4:0] >> JSQ3[4:0] >> JSQ4[4:0]
When JL=1 ( 2 injected conversions in the sequencer), the ADC converts the channels in this order:
JSQ3[4:0] >> JSQ4[4:0]
When JL=0 (1 injected conversion in the sequencer), the ADC converts only JSQ4[4:0] channel
186/709
28 27 26 25
Reserved
12 11 10 9
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These bits are written by software to define the total number of conversions in the injected
channel conversion sequence.
00: 1 conversion
01: 2 conversions
10: 3 conversions
11: 4 conversions
These bits are written by software with the channel number (0..17) assigned as the fourth in
the sequence to be converted.
are converted in a sequence starting from (4-JL). Example: ADC_JSQR[21:0] = 10
00011 00011 00111 00010 means that a scan conversion will convert the following
channel sequence: 7, 3, 3. (not 2, 7, 3)
24 23 22
8 7 6
JSQ2[4:0]
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RM0041 Rev 6
21 20 19 18
JL[1:0] JSQ4[4:1]
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5 4 3 2
JSQ1[4:0]
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(1)
RM0041
17 16
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1 0
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