OM13000 NXP Semiconductors, OM13000 Datasheet - Page 11
![no-image](/images/manufacturer_photos/0/4/487/nxp_semiconductors_sml.jpg)
OM13000
Manufacturer Part Number
OM13000
Description
BOARD LPCXPRESSO LPC1768
Manufacturer
NXP Semiconductors
Type
MCUr
Series
LPCXpressor
Specifications of OM13000
Contents
Board
Svhc
No SVHC (18-Jun-2010)
Mcu Supported Families
LPC1768
Silicon Family Name
LPC17xx
Core Architecture
ARM
Core Sub-architecture
Cortex - M3
Ic Product Type
Debugger
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
LPC1768
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
568-5101
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
OM13000
Manufacturer:
HARRIS
Quantity:
120
Company:
Part Number:
OM13000Ј¬598
Manufacturer:
NXP
Quantity:
27
NXP Semiconductors
4. AC/DC deviations detail
5. Errata notes detail
ES_LPC176X
Errata sheet
3.9 PWM.1: When updating the duty cycle for PWM1.1 from 100 %, in
4.1 n/a
5.1 Note.1 (LPC1769/68/66/65/64 only)
some cases the output can stay low for a full PWM period before the
update takes effect
Introduction:
On the LPC176x PWM peripheral, two match registers can be used to provide a single
edge controlled PWM output. One match register (PWM1MR0) controls the PWM cycle
rate, by resetting the count upon match. The other match register controls the PWM edge
position. As an example, match register PWM1MR1 controls PWM1's edge position.
Multiple single edge controlled PWM outputs will all have a rising edge at the beginning of
each PWM cycle, when a PWM1MR0 match occurs.
Problem:
Only in single-edge mode, if the duty cycle for PWM1.1 (Pulse Width Modulator 1, channel
1 output) is updated from 100 % (PWM1MR1 = PWM1MR0), then the output for PWM1.1
could unexpectedly remain low for a full PWM period before the new desired duty cycle
takes effect. This problem only affects the output for PWM1.1. Other PWM channels
(PWM1.2 to PWM1.6) are not affected by this problem.
Work-around:
A software fix can be implemented where the user can load PWM1MR1 with
PWM1MR0 + 1 (at least 1) to avoid any delays in the PWM1.1's output update.
On the LPC176x, for USB operation, the supply voltage (V
3.6 V.
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 22 March 2011
Errata sheet LPC1769/68/67/66/65/64/63
DD(3V3)
) range must be 3.0 V
ES_LPC176x
© NXP B.V. 2011. All rights reserved.
V
DD(3V3)
11 of 13