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LPC1342FBD48 Datasheet(PDF) 25 Page - NXP Semiconductors |
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LPC1342FBD48 Datasheet(HTML) 25 Page - NXP Semiconductors |
25 / 74 page LPC1311_13_42_43 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet Rev. 5 — 6 June 2012 25 of 74 NXP Semiconductors LPC1311/13/42/43 32-bit ARM Cortex-M3 microcontroller 7.18.1.1 Internal RC oscillator The IRC may be used as the clock source for the WDT, and/or as the clock that drives the system PLL and subsequently the CPU. The nominal IRC frequency is 12 MHz. The IRC is trimmed to 1 % accuracy over the entire voltage and temperature range. The USB clock is available on LPC1342/43 only. SSP1 is available on LPC1313FBD48/01 only. Fig 7. LPC1311/13/42/43 clocking generation block diagram SYSTEM PLL IRC oscillator system 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 AHBCLKCTRL SSP0/1 PERIPHERAL CLOCK DIVIDER SSP0/1 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) 14 2 |
Similar Part No. - LPC1342FBD48 |
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Similar Description - LPC1342FBD48 |
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