Fujitsu FLASH-CAN-48P Panduan Pengguna - Halaman 12

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3.3 Power Supply Voltage (JP: 29, 34)

Vcc and GND (Vss) are both connected to the edge-connector (X4) in order to supply

additional circuitry. In this case take care of not to exceed the maximum ratings of the on

board voltage regulator LM317T.

JP29 Power Supply selection

JP30 Power Supply voltage selection: +5V or +3.3V

JP34 This Jumper is used to connect the Vcc supply voltage to the µC.

Connecting an Ampere-meter instead of the jumper allows measuring of the power-

supply-current of the microcontroller (Icc).

Jumper

JP29 (Vcc)

JP30 (3V3)

JP34 (MCUVcc)

Default: JP29 = 1-2, JP30 = OFF, JP34 = ON,

By default, the on-board Voltage +5V regulation is used and the microcontroller is powered.

UG-900002-20

FLASH-CAN-48P

Chapter 3 Jumpers and Switches

Setting

Description

1 - 2

On-board voltage regulation

2 - 3

not supported

ON (closed)

voltage regulation adjusted to +3.3V

OFF (open)

voltage regulation adjusted to +5V

ON (closed)

Power supply Vcc is connected to µC

OFF (open)

Disconnected from Power supply Vcc

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