OM13006,598 NXP Semiconductors, OM13006,598 Datasheet - Page 184

• Manufacturer Part Number: OM13006,598
• Description: BOARD EVAL EM773 METER EU PLUG
• Manufacturer: NXP Semiconductors
• Type: Other Power Managementr

Specifications of OM13006,598

• 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: 568-6681

NXP Semiconductors
15.5 Operation
15.6 Register description
Table 174. Register overview: SysTick timer (base address 0xE000 E000)
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UM10415
User manual
Name
SYST_CSR
SYST_RVR
SYST_CVR
SYST_CAL
Reset Value reflects the data stored in used bits only. It does not include content of reserved bits.
Access
R/W
R/W
R/W
R/W
The SysTick timer is a 24-bit timer that counts down to zero and generates an interrupt.
The intent is to provide a fixed 10 millisecond time interval between interrupts. The
SysTick timer is clocked from the CPU clock. In order to generate recurring interrupts at a
specific interval, the SYST_RVR register must be initialized with the correct value for the
desired interval. A default value (<tbd>) is provided in the SYST_CALIB register and may
be changed by software. The default value gives a 10 millisecond interrupt rate if the CPU
clock is set to <tbd>.
The block diagram of the SysTick timer is shown below in the
The systick timer registers are located on the ARM Cortex-M0 private peripheral bus (see
Figure
Section
Fig 47. System tick timer block diagram
Address
offset
0x010
0x014
0x018
0x01C
55), and are part of the ARM Cortex-M0 core peripherals. For details, see
20.5.4.
system clock/2
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 10 September 2010
System Timer Reload value register
Description
System Timer Control and status register
System Timer Current value register
System Timer Calibration value register
COUNTFLAG
clock
24-bit down counter
load
SYST_CALIB
SYST_RVR
SYST_CVR
SYST_CSR
load data
under-
flow
Chapter 15: EM773 System tick timer
TICKINT
enable
count
ENABLE
Figure
System Tick
interrupt
peripheral
private
47.
UM10415
bus
© NXP B.V. 2010. All rights reserved.
Reset value
0x000 0000
0
0
0x4
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