UM0442 datasheet(20/33 Pages) STMICROELECTRONICS

20 / 33 page

Hardware configuration and functionality

UM0442

20/33

Figure 18.

The ADC connector schematic

The ADC peripheral channels used for this connector are: 2, 13, 14 and 15, connected to

pins P0.12, P1.12, P1.13 and P1.14 respectively.

The dedicated potentiometer (useful to test the peripheral features) is also present in the

STR750-MAP layout adjacent to the connector. It is attached to the ADC channel 12 (pin

P1.11): see Figure 19 below.

Figure 19.

The ADC potentiometer schematic

4.18

User LEDs and push buttons

As well as the ADC connector and potentiometer, debugging and testing capabilities of the

user specific applications are also supported by 6 on-board user LEDs and 2 push buttons.

Each LED is accessible by connecting the correspondent jumper which is to minimize the

load effects on the other peripherals that use the same pin-out (i.e. the user LEDs attached

to pins P0.22 and P0.23 share this port with the UART connector circuit). These jumpers are

given in Figure 20 and are also illustrated in the board silkscreen.

Figure 20.

User LEDs schematic

UM0442 Datasheet(PDF) 20 Page - STMicroelectronics