Renesas PiggyBack 144QFP, Руководство пользователя

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R20UT3282ED0101 Rev. 1.1 9
2015-06-10
Chapter 4 Clock sources
One external crystal oscillator for the device clock supply is provided with the
board.
4.1 MainOsc
A crystal or ceramic resonator can be mounted on socket X1.
A 16Mhz oscillator is supplied with the board.
4.2 Programmable Oscillator
It is possible to mount a programmable crystal oscillator on the PiggyBack board
at OSC1. The available footprint and circuitry is designed for a SG-8002CE
programmable crystal oscillator from Epson Toyocom. The output from this
oscillator can be connected to port X1 of the device via jumper JP13. The SG-
8002CE is neither mounted nor provided with the board. For details about the
available circuitry refer to
Chapter 10
‘Schematic’
. A resonator mounted on
socket X1 must not be used in parallel to another clock source.