LPC1342FHN33,551 NXP Semiconductors, LPC1342FHN33,551 Datasheet - Page 11

• Manufacturer Part Number: LPC1342FHN33,551
• Description: IC MCU 32BIT 16KB FLASH 33HVQFN
• Manufacturer: NXP Semiconductors
• Series: LPC13xxr

Specifications of LPC1342FHN33,551

• Program Memory Type: FLASH
• Program Memory Size: 16KB (16K x 8)
• Package / Case: 33-VQFN Exposed Pad, 33-HVQFN, 33-SQFN, 33-DHVQFN
• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 72MHz
• Connectivity: I²C, Microwire, SPI, SSI, SSP, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 28
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LPC13
• Core: ARM Cortex M3
• Data Bus Width: 32 bit
• Data Ram Size: 4 KB
• Interface Type: I2C, UART
• Maximum Clock Frequency: 72 MHz
• Number Of Programmable I/os: 28
• Number Of Timers: 4
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Package: 33HVQFN EP
• Device Core: ARM Cortex M3
• Family Name: LPC1000
• Maximum Speed: 72 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4946; 935289656551

NXP Semiconductors
3.4 Clocking and power control
UM10375
User manual
See
The LPC131x include three independent oscillators. These are the system oscillator, the
Internal RC oscillator (IRC), and the Watchdog oscillator. Each oscillator can be used for
more than one purpose as required in a particular application.
Following reset, the LPC131x 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.
The SYSAHBCLKCTRL register gates the system clock to the various peripherals and
memories. UART, SSP0/1, the SysTick timer, and the ARM trace clock have individual
clock dividers to derive peripheral clocks from the main clock.
The USB clock, if available, and the watchdog clock, can be derived from the oscillator
output or the main clock.
The main clock, and the clock outputs from the IRC, the system oscillator, and the
watchdog oscillator can be observed directly on the CLKOUT pin.
Figure 3
for an overview of the LPC13xx Clock Generation Unit (CGU).
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 7 July 2010
Chapter 3: LPC13xx System configuration
UM10375
© NXP B.V. 2010. All rights reserved.
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