OM13005,598 NXP Semiconductors, OM13005,598 Datasheet - Page 183

• Manufacturer Part Number: OM13005,598
• Description: BOARD EVAL EM773 METER US PLUG
• Manufacturer: NXP Semiconductors
• Type: Other Power Managementr

Specifications of OM13005,598

• Design Resources: Plug Meter Schematics, Gerber Files USB Dongle Schematics, Gerber Files
• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 32-Bit
• Utilized Ic / Part: EM773FHN33,551
• Interface Type: USB
• Maximum Operating Temperature: + 150 C
• Operating Supply Voltage: 1.8 V to 3.6 V
• Product: Power Management Development Tools
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Primary Attributes: -
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: EM773, OL2381
• Other names: 568-6680

15.1 How to read this chapter
15.2 Basic configuration
15.3 Features
15.4 Description
UM10415
User manual
The system tick timer (SysTick timer) is part of the ARM Cortex-M0 core and is identical
for all EM773 parts.
The system tick timer is configured using the following registers:
The SysTick timer is an integral part of the Cortex-M0. The SysTick timer is intended to
generate a fixed 10 millisecond interrupt for use by an operating system or other system
management software.
Since the SysTick timer is a part of the Cortex-M0, it facilitates porting of software by
providing a standard timer that is available on Cortex-M0 based devices. The SysTick
timer can be used for:
Refer to the Cortex-M0 User Guide for details.
1. Pins: The system tick timer uses no external pins.
2. Power: The system tick timer is enabled through the SysTick control register
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UM10415
Chapter 15: EM773 System tick timer
Rev. 1 — 10 September 2010
(Section
system clock.
Simple 24-bit timer.
Uses dedicated exception vector.
Clocked internally by a dedicated system tick timer clock. The system tick timer clock
is fixed to half the frequency of the system clock.
An RTOS tick timer which fires at a programmable rate (for example 100 Hz) and
invokes a SysTick routine.
A high-speed alarm timer using the core clock.
A simple counter. Software can use this to measure time to completion and time used.
An internal clock source control based on missing/meeting durations. The
COUNTFLAG bit-field in the control and status register can be used to determine if an
action completed within a set duration, as part of a dynamic clock management
control loop.
20.5.4.1). The system tick timer clock is fixed to half the frequency of the
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 10 September 2010
© NXP B.V. 2010. All rights reserved.
User manual
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