LPC1788FBD144,551 NXP Semiconductors, LPC1788FBD144,551 Datasheet - Page 56
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LPC1788FBD144,551
Manufacturer Part Number
LPC1788FBD144,551
Description
8-bit Microcontrollers - MCU CORTEX-M3 512KB FL 96KB SRAM 4KB EE USB
Manufacturer
NXP Semiconductors
Datasheet
1.LPC1778FBD144551.pdf
(120 pages)
Specifications of LPC1788FBD144,551
Rohs
yes
Factory Pack Quantity
60
- Current page: 56 of 120
- Download datasheet (2Mb)
NXP Semiconductors
LPC178X_7X
Product data sheet
7.25.1 Features
7.25 General purpose 32-bit timers/external event counters
7.26 Pulse Width Modulator (PWM)
The LPC178x/7x include four 32-bit timer/counters.
The timer/counter is designed to count cycles of the system derived clock or an
externally-supplied clock. It can optionally generate interrupts, generate timed DMA
requests, or perform other actions at specified timer values, based on four match
registers. Each timer/counter also includes two capture inputs to trap the timer value when
an input signal transitions, optionally generating an interrupt.
The LPC178x/7x contain two standard PWMs.
The PWM is based on the standard Timer block and inherits all of its features, although
only the PWM function is pinned out on the LPC178x/7x. The Timer is designed to count
cycles of the system derived clock and optionally switch pins, generate interrupts or
perform other actions when specified timer values occur, based on seven match registers.
The PWM function is in addition to these features, and is based on match register events.
The ability to separately control rising and falling edge locations allows the PWM to be
used for more applications. For instance, multi-phase motor control typically requires
three non-overlapping PWM outputs with individual control of all three pulse widths and
positions.
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Global Acceptance Filter recognizes 11-bit and 29-bit receive identifiers for all CAN
buses.
Acceptance Filter can provide FullCAN-style automatic reception for selected
Standard Identifiers.
FullCAN messages can generate interrupts.
A 32-bit timer/counter with a programmable 32-bit prescaler.
Counter or timer operation.
Two 32-bit capture channels per timer, that can take a snapshot of the timer value
when an input signal transitions. A capture event may also generate an interrupt.
Four 32-bit match registers that allow:
– Continuous operation with optional interrupt generation on match.
– Stop timer on match with optional interrupt generation.
– Reset timer on match with optional interrupt generation.
Up to four external outputs corresponding to match registers, with the following
capabilities:
– Set LOW on match.
– Set HIGH on match.
– Toggle on match.
– Do nothing on match.
Up to two match registers can be used to generate timed DMA requests.
All information provided in this document is subject to legal disclaimers.
Rev. 4.1 — 15 November 2012
32-bit ARM Cortex-M3 microcontroller
LPC178x/7x
© NXP B.V. 2012. All rights reserved.
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