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M451
May. 4, 2018
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System Manager
6.2
6.2.1 Overview
The system manager provides the functions of system control, power modes, wake-up sources,
reset sources, system memory map, product ID and multi-function pin control. The following
sections describe the functions for
System Reset
Power Modes and Wake-up Sources
System Power Distribution
SRAM Memory Organization
System Control Register for Part Number ID, Chip Reset and Multi-function Pin
Control
System Timer (SysTick)
Nested Vectored Interrupt Controller (NVIC)
System Control register
6.2.2 System Reset
The system reset can be issued by one of the events listed below. These reset event flags can be
read from SYS_RSTSTS register to determine the reset source. Hardware reset can reset chip
through peripheral reset signals. Software reset can trigger reset through control registers.
Hardware Reset Sources
–
Power-on Reset (POR)
–
Low level on the nRESET pin
–
Watchdog Time-out Reset and Window Watchdog Reset (WDT/WWDT Reset)
–
Low Voltage Reset (LVR)
–
Brown-out Detector Reset (BOD Reset)
–
CPU Lockup Reset (M45xD/M45xC Only)
Software Reset Sources
–
CHIP Reset will reset whole chip by writing 1 to CHIPRST (SYS_IPRST0[0])
–
MCU Reset to reboot but keeping the booting setting from APROM or LDROM by
writing 1 to SYSRESETREQ (AIRCR[2])
–
CPU Reset for Cortex® -M4 core Only by writing 1 to CPURST (SYS_IPRST0[1])
Содержание ARM Cortex NuMicro M451 Series
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Страница 324: ...M451 May 4 2018 Page 324 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL Figure 6 4 18 Checksum Calculation Flow...
Страница 355: ...M451 May 4 2018 Page 355 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 2 0 Reserved Reserved...
Страница 625: ...M451 May 4 2018 Page 625 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 00 5 bits 01 6 bits 10 7 bits 11 8 bits...
Страница 721: ...M451 May 4 2018 Page 721 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL the SCL line 1 0 Reserved Reserved...
Страница 1001: ...M451 May 4 2018 Page 1001 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 10x10x1 4 mm footprint 2 0 mm 9 2...
Страница 1002: ...M451 May 4 2018 Page 1002 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 7x7x1 4 mm footprint 2 0 mm 9 3...
Страница 1003: ...M451 May 4 2018 Page 1003 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 48L 7x7x1 4mm footprint 2 0mm 9 4...