Analog-to-digital converter (ADC) RM0008
234/1096 Doc ID 13902 Rev 12
11.12.4 ADC sample time register 1 (ADC_SMPR1)
Address offset: 0x0C
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
SMP17[2:0] SMP16[2:0] SMP15[2:1]
rw rw rw rw rw rw rw rw
1514131211109876543210
SMP
15_0
SMP14[2:0] SMP13[2:0] SMP12[2:0] SMP11[2:0] SMP10[2:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:24 Reserved, must be kept cleared.
Bits 23:0 SMPx[2:0]: Channel x Sample time selection
These bits are written by software to select the sample time individually for each channel.
During sample cycles channel selection bits must remain unchanged.
000: 1.5 cycles
001: 7.5 cycles
010: 13.5 cycles
011: 28.5 cycles
100: 41.5 cycles
101: 55.5 cycles
110: 71.5 cycles
111: 239.5 cycles
Note: ADC1 analog Channel16 and Channel 17 are internally connected to the temperature
sensor and to V
REFINT
, respectively.
ADC2 analog input Channel16 and Channel17 are internally connected to V
SS
.
ADC3 analog inputs Channel14, Channel15, Channel16 and Channel17 are connected
to V
SS
.
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