Fujitsu MB96300 Power Supply S2, JP 8, 15, 16, 17, JP8, Mcuvcc, Dvcc, Power Supply Configuration

SK-96370-144PMC-GDC User Guide

Chapter 3 Jumpers and Switches

3.2Power Supply (S2, JP: 8, 15, 16, 17, 22)

The on-board voltage regulator provides stabilized 5V *1 and 3.3V supplies to the MCU *1 and peripherals. Even though they are thermally protected against overload, care must be taken when supplying current for additional circuitry.

The LIN Vs line can be connected directly to the input supply of the board by jumpers. In this case, the input voltage to the board has to be suitable for the connected bus devices (mostly around 12V). Since there is a protection diode between Vin and Vs, it is not possible to power the board over the LIN bus.

S2 Power Switch

JP8 Core power supply stabilization capacitor

JP15 Selects the power supply voltage for the microcontroller

For SK-96370-144PMC-GDC use only 3.3V, because of the external memory

JP16 Connects the power supply voltage to the microcontroller. An ampere meter can be used instead for power consumption measurement.

JP17 Selects the Stepper Motor Driver Voltage (3.3V or 5V) JP22 Jumper to override the power switch S2

Jumper		Setting	Description
JP8		Closed	An external capacitor is connected
(C-pin)		Open	An external capacitor is not connected
JP15 *1	1 - 2		Power supply (VCC) for MCU is set to 5V
			(Not allowed for SK-96370-144PMC-GDC)
(MCUVCC)
	2 - 3		Power supply (VCC) for MCU is set to 3V3
JP16	1 - 2		MCU is disconnected from VCC
(MCUVCC)	2 - 3		MCU is connected to VCC
JP17	1 - 2		SMC (DVCC) supply voltage is set to 5V
(DVCC)	2 - 3		SMC (DVCC) supply voltage is set to 3.3V
JP22		Closed	Board is always switched on
(Mains)		Open	Board power is controlled by switch S2

Table 3-2: Power Supply Configuration

By default, all Board supplies are set to 3.3V.

*1 For SK-96370-144PMC-GDC use only 3.3V, because of the external memory

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