UM0442 datasheet(8/33 Pages) STMICROELECTRONICS

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Hardware configuration and functionality

UM0442

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Figure 6.

STR750FV2 pin-out and EXT power source locations

4.4

Mini-USB connector power source

In order to use the mini-USB connector as power source, close the related jumper as

described in Section 4.1: Power source selector on page 5 (be sure that the other jumpers

are open) and then plug the mini-USB cable onto the connector.

This feature can have an impact on the battery charge capabilities of the STR750-MAP as

described in Section 4.2.

The USB unit integrates a 48 MHz clock for data management and a USBLC6-2P6

application specific device for very low capacitance ESD protection circuit (see the

schematics in Figure 23).

4.5

Standard power supply connector

The standard power supply connector is named as PWR in the board silkscreen and, once

closed, the STR750-MAP is powered using both laboratory equipment and a common 9÷12

Vdc power supply source.

This power source also impacts the battery charge capabilities of the board.

4.6

Memory boot

The STR750-MAP evaluation board allows the user to run the STR750FV2 choosing

between 4 memory modes in order to perform the boot phase.

To make the appropriate choice for your application, refer to the boot table printed onto the

board silkscreen. This table is given here with the associated selectors (see Table 1).

SW1 corresponds to Boot1/CS2 in the schematics, on the right side (boundary part of the

board). SW2 corresponds to Boot0 pin in the microcontroller and in the schematics (refer to

the related schematics in Figure 22).

UM0442 Datasheet(PDF) 8 Page - STMicroelectronics