Embedded reference voltage. STMicroelectronics STM32MP157A, STM32MP157D
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Electrical characteristics STM32MP157A/D
Table 15. Embedded reset and power control block characteristics (continued)
Symbol Parameter Conditions Min Typ Max Unit t t
I
V
V
PVDCORE_1
SEL_VDDCORETE
MPO
(5) hyst_VDDCORE
VDDCORETEMPO
Digital core domain supply voltage (V
DDCORE
) detector threshold 1 (LPLV_Stop)
Hysteresis of Digital core domain supply voltage
(V
DDCORE
) detector
Tempo on VPVDCORE_0 at rising edge of V
DDCORE ensure that V
DDCORE established
to
is fully
Tempo on V
PVDCORE_1 edge of V
DDCORE
V
DDCORE
at rising
to ensure that
is fully established on exit of LPLV-Stop mode
V
DDCORE
Voltage Monitoring consumption on V
DD
USB Threshold voltage
Falling edge
-
-
-
-
-
0.71
-
200
234
1.7
0.755
40
340
380
2.6
0.8
-
550
606
4.2
V mV
µs
µs
µA
USB_VTH 1.21
V
1. Guaranteed by design.
2. No hysteresis when using PVD_IN pin.
3. BOR0 is enabled in all modes and its consumption is therefore included in the supply current characteristics tables.
4. During the first rising edge of V the end of the t
VDDCORETEMPO
.
DDCORE
, the slope should be less than 2 ms/V to ensure V
DDCORE
is fully established before
5. When exiting from LPLV-Stop mode to RUN mode the rising slope for V
V
DDCORE
is fully established before the end of the t
VDDCORETEMPO
.
DDCORE
should be less than 1 ms/V to ensure
6.3.4 Embedded reference voltage
The parameters given in Table 16
, Table 17 are derived from tests performed under ambient
temperature and V
DD
.
supply voltage conditions summarized in Table 13: General operating
Symbol
V
REFINT t
S_vrefint
(1)(2) t
S_vbat
t start_vrefint
I refbuf
(2)
Table 16. Embedded reference voltage
Parameter Conditions Min
Internal reference voltages
ADC sampling time when reading the internal reference voltage
-40 °C < TJ < 125 °C
-
V
BAT
sampling time when reading the internal V
BAT reference voltage
Start time of reference voltage buffer when ADC is enable
-
-
Reference Buffer consumption for ADC
V
DDA
= 3.3 V
1.175
4.3
9.8
0.8
9.1
Typ
1.210
-
-
-
13.6
Max
1.241
-
-
4.6
27.7
Unit
V
µs
µA
DS12504 Rev 6
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