LPC1313 datasheet(22/60 Pages) NXP

22 / 60 page

LPC1311_13_42_43_2

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 02 — 6 May 2010

22 of 60

NXP Semiconductors

LPC1311/13/42/43

32-bit ARM Cortex-M3 microcontroller

Following reset, the LPC1311/13/42/43 will operate from the internal RC oscillator until

switched by software. This allows systems to operate without any external crystal and the

bootloader code to operate at a known frequency.

See Figure 7 for an overview of the LPC1311/13/42/43 clock generation.

The USB clock is available on LPC1342/43 only.

Fig 7.

LPC1311/13/42/43 clocking generation block diagram

SYSTEM PLL

IRC oscillator

system oscillator

watchdog oscillator

IRC oscillator

watchdog oscillator

USB PLL

MAINCLKSEL

(main clock select)

SYSPLLCLKSEL

(system PLL clock select)

USBPLLCLKSEL

(USB clock select)

SYSTEM CLOCK

DIVIDER

AHBCLKCTRL

(AHB clock enable)

AHB clock 0

(system)

AHB clock 1

(ROM)

AHB clock 16

(IOCONFIG)

AHBCLKCTRL

SSP PERIPHERAL

CLOCK DIVIDER

SSP

UART PERIPHERAL

CLOCK DIVIDER

UART

SYSTICK TIMER

CLOCK DIVIDER

WDT CLOCK

DIVIDER

SYSTICK

timer

ARM TRACE

CLOCK DIVIDER

ARM

trace clock

WDT

WDTUEN

(WDT clock update enable)

USB 48 MHz CLOCK

DIVIDER

USB

USBUEN

(USB clock update enable)

watchdog oscillator

IRC oscillator

system oscillator

CLKOUT PIN CLOCK

DIVIDER

CLKOUT pin

CLKOUTUEN

(CLKOUT update enable)

002aae859

main clock

system clock

IRC oscillator

AHB clocks

2 to 15

(memories

and peripherals)

LPC1313 Datasheet(PDF) 22 Page - NXP Semiconductors

LPC1313 Datasheet(HTML) 22 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

Datasheet Download

Link URL