LPC2939FBD208,551 NXP Semiconductors, LPC2939FBD208,551 Datasheet - Page 46

• Manufacturer Part Number: LPC2939FBD208,551
• Description: IC ARM9 MCU FLASH 768KB 208-LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC2900r

Specifications of LPC2939FBD208,551

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 125MHz
• Connectivity: CAN, EBI/EMI, I²C, LIN, SPI, UART/USART, USB, USB OTG
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 152
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 16K x 8
• Ram Size: 56K x 8
• Voltage - Supply (vcc/vdd): 1.71 V ~ 3.6 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-LQFP
• Processor Series: LPC29
• Core: ARM968E-S
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: OM11027
• Package: 208LQFP
• Device Core: ARM968E-S
• Family Name: LPC2900
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 16|32 Bit
• Number Of Programmable I/os: 160
• Interface Type: CAN/I2C/LIN/QSPI/UART/USB
• On-chip Adc: 24-chx10-bit
• Number Of Timers: 6
• For Use With: 568-4787 - BOARD EVAL LPC2939
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935287113551

NXP Semiconductors
LPC2939_3
Product data sheet
6.15.5.1 Functional description
The ability to provide flexible waveforms allows PWM blocks to be used in multiple
applications; e.g. dimmer/lamp control and fan control. Pulse-width modulation is the
preferred method for regulating power since no additional heat is generated, and it is
energy-efficient when compared with linear-regulating voltage control networks.
The PWM delivers the waveforms/pulses of the desired duty cycles and cycle periods. A
very basic application of these pulses can be in controlling the amount of power
transferred to a load. Since the duty cycle of the pulses can be controlled, the desired
amount of power can be transferred for a controlled duration. Two examples of such
applications are:
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Six pulse-width modulated output signals
Double edge features (rising and falling edges programmed individually)
Optional interrupt generation on match (each edge)
Different operation modes: continuous or run-once
16-bit PWM counter and 16-bit prescale counter allow a large range of PWM periods
A protective mode (TRAP) holding the output in a software-controllable state and with
optional interrupt generation on a trap event
Three capture registers and capture trigger pins with optional interrupt generation on
a capture event
Interrupt generation on match event, capture event, PWM counter overflow or trap
event
A burst mode mixing the external carrier signal with internally generated PWM
Programmable sync-delay output to trigger other PWM modules (master/slave
behavior)
Dimmer controller: The flexibility of providing waves of a desired duty cycle and cycle
period allows the PWM to control the amount of power to be transferred to the load.
The PWM functions as a dimmer controller in this application.
Motor controller: The PWM provides multi-phase outputs, and these outputs can be
controlled to have a certain pattern sequence. In this way the force/torque of the
motor can be adjusted as desired. This makes the PWM function as a motor drive.
All information provided in this document is subject to legal disclaimers.
Rev. 03 — 7 April 2010
ARM9 microcontroller with CAN, LIN, and USB
LPC2939
© NXP B.V. 2010. All rights reserved.
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