DocID024597 Rev 5 603/1830
RM0351 Analog-to-digital converters (ADC)
614
18.6.18 ADC injected data register (ADC_JDRy, y= 1..4)
Address offset: 0x80 - 0x8C
Reset value: 0x0000 0000
Bit 31 OFFSETy_EN: Offset y Enable
This bit is written by software to enable or disable the offset programmed into bits
OFFSETy[11:0].
Note: Software is allowed to write this bit only when ADSTART=0 and JADSTART=0 (which
ensures that no conversion is ongoing).
Bits 30:26 OFFSETy_CH[4:0]: Channel selection for the Data offset y
These bits are written by software to define the channel to which the offset programmed into
bits OFFSETy[11:0] will apply.
Note: Software is allowed to write these bits only when ADSTART=0 and JADSTART=0
(which ensures that no conversion is ongoing).
Bits 25:12 Reserved, must be kept at reset value.
Bits 11:0 OFFSETy[11:0]: Data offset y for the channel programmed into bits OFFSETy_CH[4:0]
These bits are written by software to define the offset y to be subtracted from the raw
converted data when converting a channel (can be regular or injected). The channel to which
applies the data offset y must be programmed in the bits OFFSETy_CH[4:0]. The conversion
result can be read from in the ADC_DR (regular conversion) or from in the ADC_JDRyi
registers (injected conversion).
Note: Software is allowed to write these bits only when ADSTART=0 and JADSTART=0
(which ensures that no conversion is ongoing).
If several offset (OFFSETy) point to the same channel, only the offset with the lowest x
value is considered for the subtraction.
Ex: if OFFSET1_CH[4:0]=4 and OFFSET2_CH[4:0]=4, this is OFFSET1[11:0] which is
subtracted when converting channel 4.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
1514131211109876543210
JDATA[15:0]
rrrrrr r r r r rrrrrr
Bits 31:16 Reserved, must be kept at reset value.
Bits 15:0 JDATA[15:0]: Injected data
These bits are read-only. They contain the conversion result from injected channel y. The
data are left -or right-aligned as described in Section 18.4.26: Data management.
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