EVK-SH3000USB Semtech, EVK-SH3000USB Datasheet - Page 10

• Manufacturer Part Number: EVK-SH3000USB
• Description: Tools, Development Kit
• Manufacturer: Semtech

Specifications of EVK-SH3000USB

• Kit Contents: Evaluation Kit
• Tool / Board Applications: MicroBuddy Devices
• Development Tool Type: Hardware / Software - Eval/Demo Board
• Mcu Supported Families: SH3000
• For Use With: SH3000 MicroBuddy
• Lead Free Status / RoHS Status: na

LFO Clock Setting
This is the LFO clock settings window. This window allows the user to configure the Low-Frequency Clock module, which
is used internally to create 32.768 kHz as a reference for all the internal functions of the MicroBuddy. The accuracy of the
MicroBuddy system clock crucially depends on these settings.
SH3000 Evaluation Kit User Guide v0.96
SYSTEM MANAGEMENT
A. LF Clock – The tab that displays this window.
B. The title bar changes color to indicate the status of the settings. A green bar indicates that the settings shown are
C. Crystal adjustment – Allows the user to adjust the padding capacitance presented to the crystal. This is
D. 32.768 kHz oscillator – Displays the current operating configuration of the LF oscillator. The RC oscillator
E. Internal reference resistor disconnect - This switch is used to switch out the internal 1 MΩ
F. Jumper J2 – This is a graphic representation of jumper J2 on the evaluation board used to connect the
the settings described in the registers table. When the user changes a setting in this window, the bar turns red,
indicating that the settings are different from the register table. Pressing Apply or Change now updates the
register table with the new settings and changes the bar back to green.
useful to adjust for temperature compensation for ambient operating temperatures outside of the usual operating
temperature. See the SH3000 Reference Manual for a more detailed explanation.
mode is shown, with the crystal oscillator mode half covering it. This status is determined by the MicroBuddy
hardware. There is no setting for this in software.
reference resistor when using the external reference resistor (F).
external reference resistor.
2003-03
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EVK-SH3000USB MicroBuddy™
Copyright ©2002-2003 Semtech Corporation
Evaluation Kit User Guide
www.semtech.co
Preliminary
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