LPC11E11FHN33/101, NXP Semiconductors, LPC11E11FHN33/101, Datasheet - Page 21

• Manufacturer Part Number: LPC11E11FHN33/101,
• Description: ARM Microcontrollers - MCU 8kB 512B EE 4kB SRAM
• Manufacturer: NXP Semiconductors

Specifications of LPC11E11FHN33/101,

• Rohs: yes
• Core: ARM Cortex M0
• Processor Series: LPC11E1x
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 512 B
• On-chip Adc: Yes
• Operating Supply Voltage: 3.3 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: HVQFN-33
• Mounting Style: SMD/SMT
• Factory Pack Quantity: 260

NXP Semiconductors
LPC11E1X
Product data sheet
Fig 6.
watchdog oscillator
system oscillator
IRC oscillator
IRC oscillator
LPC11E1x clocking generation block diagram
(system PLL clock select)
7.16.1.1 Internal RC oscillator
7.16.1.2 System oscillator
7.16.1.3 Watchdog oscillator
SYSPLLCLKSEL
The IRC can be used as the clock source for the WDT, and/or as the clock that drives the
system PLL and then the CPU. The nominal IRC frequency is 12 MHz.
Upon power-up, any chip reset, or wake-up from Deep power-down mode, the LPC11E1x
use the IRC as the clock source. Software can later switch to one of the other available
clock sources.
The system oscillator can be used as the clock source for the CPU, with or without using
the PLL.
The system oscillator operates at frequencies of 1 MHz to 25 MHz. This frequency can be
boosted to a higher frequency, up to the maximum CPU operating frequency, by the
system PLL.
The watchdog oscillator can be used as a clock source that directly drives the CPU, the
watchdog timer, or the CLKOUT pin. The watchdog oscillator nominal frequency is
programmable between 7.8 kHz and 1.7 MHz. The frequency spread over processing and
temperature is 40 % (see also
SYSTEM PLL
(main clock select)
MAINCLKSEL
All information provided in this document is subject to legal disclaimers.
main clock
Rev. 1 — 20 February 2012
watchdog oscillator
system oscillator
SYSTEM CLOCK
Table
IRC oscillator
DIVIDER
(CLKOUT update enable)
13).
CLKOUTUEN
system clock
watchdog oscillator
32-bit ARM Cortex-M0 microcontroller
IRC oscillator
USART PERIPHERAL
SYSAHBCLKCTRLn
CLKOUT PIN CLOCK
(WDT clock select)
(AHB clock enable)
SSP0 PERIPHERAL
SSP1 PERIPHERAL
CLOCK DIVIDER
CLOCK DIVIDER
CLOCK DIVIDER
WDCLKSEL
n
DIVIDER
LPC11E1x
© NXP B.V. 2012. All rights reserved.
CPU, system control,
PMU
memories,
peripheral clocks
SSP0
UART
SSP1
CLKOUT pin
WDT
002aag687
21 of 61