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STM32WB35CCU6ATR bảng dữ liệu(PDF) 138 Page - STMicroelectronics

tên linh kiện STM32WB35CCU6ATR
Giải thích chi tiết về linh kiện  Multiprotocol wireless 32-bit MCU Arm®-based Cortex®-M4 with FPU, Bluetooth® 5 and 802.15.4 radio solution
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STM32WB35CCU6ATR bảng dữ liệu(HTML) 138 Page - STMicroelectronics

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Electrical characteristics
STM32WB55xx STM32WB35xx
138/193
DS11929 Rev 10
Figure 28. Recommended NRST pin protection
1. The reset network protects the device against parasitic resets.
2. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in
Table 75, otherwise the reset will not be taken into account by the device.
3. The external capacitor on NRST must be placed as close as possible to the device.
Table 75. NRST pin characteristics(1)
1.
Guaranteed by design.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIL(NRST)
NRST input
low level voltage
-
-
-
0.3 x VDD
V
VIH(NRST)
NRST input
high level voltage
-
0.7 x VDD
--
Vhys(NRST)
NRST Schmitt trigger
voltage hysteresis
--
200
-
mV
RPU
Weak pull-up
equivalent resistor(2)
2. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to
the series resistance is minimal (~10%)
.
VIN = VSS
25
40
55
kΩ
VF(NRST)
NRST input
filtered pulse
--
-
70
ns
VNF(NRST)
NRST input
not filtered pulse
1.71 V ≤ VDD ≤ 3.6 V
350
-
-
MS19878V3
RPU
VDD
Internal reset
External
reset circuit
(1)
NRST
(2)
Filter
0.1 μF



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