lpc1778 NXP Semiconductors, lpc1778 Datasheet - Page 69

• Manufacturer Part Number: lpc1778
• Description: 32-bit Arm Cortex-m3 Microcontroller; Up To 512 Kb Flash And 96 Kb Sram; Usb Device/host/otg; Ethernet; Lcd; Emc
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC178x_7x
Objective data sheet
7.33.1 Reset
7.33 System control
Reset has four sources on the LPC178x/7x: the RESET pin, the Watchdog reset,
Power-On Reset (POR), and the BrownOut Detection (BOD) circuit. The RESET pin is a
Schmitt trigger input pin. Assertion of chip Reset by any source, once the operating
voltage attains a usable level, starts the Wake-up timer (see description in
Section
the oscillator is running, a fixed number of clocks have passed, and the flash controller
has completed its initialization.
When the internal Reset is removed, the processor begins executing at address 0, which
is initially the Reset vector mapped from the boot block. At that point, all of the processor
and peripheral registers have been initialized to predetermined values.
Fig 8.
7.32.4), causing reset to remain asserted until the external Reset is de-asserted,
Power distribution
V
DD(REG)(3V3)
All information provided in this document is subject to legal disclaimers.
V
DD(3V3)
VREFP
RTCX1
RTCX2
VBAT
V
V
V
DDA
SSA
SS
Rev. 00.04 — 8 July 2010
LPC178x/7x
RTC POWER DOMAIN
ADC POWER DOMAIN
MAIN POWER DOMAIN
OSCILLATOR
SELECTOR
to I/O pads
POWER
32 kHz
3.3 V REGULATOR
32-bit ARM Cortex-M3 microcontroller
REGULATOR
ULTRA-LOW
POWER
DAC
ADC
BACKUP REGISTERS
REAL-TIME CLOCK
to core
to memories,
peripherals,
oscillators,
PLLs
LPC178x/7x
002aaf530
© NXP B.V. 2010. All rights reserved.
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