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STM32MP151AAA3 Folha de dados(PDF) 28 Page - STMicroelectronics

Nome de Peças STM32MP151AAA3
Descrição Electrónicos  Arm® Cortex®-A7 800 MHz Cortex®-M4 MPU, TFT, 35 comm. interfaces, 25 timers, adv. analog
PDF  253 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
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STM32MP151AAA3 Folha de dados(HTML) 28 Page - STMicroelectronics

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Functional overview
STM32MP151A/D
28/253
DS12500 Rev 3
external decoupling capacitors to be discharged with different time constants during the
power- down transient phase.
Figure 2. Power-up/down sequence
1. VDDX refers to any power supply among VDDCORE, VDDA, VDDA1V8_REG, , VDDA1V1_REG, VDD3V3_USBHS/FS,
VDDQ_DDR.
3.7.2
Power supply supervisor
The devices have an integrated power-on reset (POR)/ power-down reset (PDR) circuitry
coupled with a Brownout reset (BOR) circuitry:
•
Power-on reset (POR)
The POR supervisor monitors VDD power supply and compares it to a fixed threshold.
The devices remain in reset mode when VDD is below this threshold,
•
Power-down reset (PDR)
The PDR supervisor monitors VDD power supply. A reset is generated when VDD drops
below a fixed threshold.
The PDR supervisor can be enabled/disabled through PDR_ON pin.
•
Brownout reset (BOR)
The BOR supervisor monitors VDD power supply. Three BOR thresholds (from 2.1 to
2.7 V) can be configured through option bytes. A reset is generated when VDD drops
below this threshold.
•
Power-on reset VDDCORE (POR_VDDCORE)
The POR_VDDCORE supervisor monitors VDDCORE power supply and compares it to
a fixed threshold. The VDDCORE domain remain in reset mode when VDDCORE is below
this threshold,
•
Power-down reset VDDCORE (PDR_VDDCORE)
The PDR_VDDCORE supervisor monitors VDDCORE power supply. A VDDCORE domain
reset is generated when VDDCORE drops below a fixed threshold.
The PDR_VDDCORE supervisor can be enabled/disabled through PDR_ON_CORE
pin.
MSv47490V1
0.3
1
VBOR0
3.6
Operating mode
Power-on
Power-down
time
V
VDDX
(1)
VDD
Invalid supply area
VDDX < VDD + 300 mV
VDDX independent from VDD



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