STR720-EVAL datasheet(13/32 Pages) STMICROELECTRONICS

13 / 32 page

STR720-EVAL

2 Hardware

12/31

2.15

Option switch settings

For switch position details, see

Figure 6.

Switch positions

Table 7.

Option switch settings

Switch

Schematic

Description

Default

SW1

Section 4.1 on page 18

Reset

Push to make

SW2

Section 4.1 on page 18

Boot mode:

1-2 = Boot from internal ROM

2-3 = Boot from external flash

See

Figure 7 and Figure 8 on page 13.

2-3

SW3

Section 4.11 on page 28

SPI flash notW:

1-2 = Active

2-3 = Inactive

2-3

SW4

Section 4.11 on page 28

SPI flash notHOLD:

1-2 = Active

2-3 = Inactive

2-3

SW5

Section 4.10 on page 27

CAN transceiver select: L9669 / L9616

(default)

Note SW5 and SW6 must be changed

together.

1 = L9669

A = L9616

SW6

SW7

Section 4.10 on page 27

L9616 ASC speed:

1-2 = pull down = high speed

2-3 = pull up = low speed

2-3

SW8

Section 4.1 on page 18

Push to make

SW9

Section 4.1 on page 18

Push to make

SW10

Section 4.1 on page 18

Select

Push to make

SW11

Section 4.1 on page 18

RTC reset

Push to make

1-2

2-3

Microswitches

Slide switches

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