TLE9461ES datasheet(9/140 Pages) INFINEON

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Datasheet

Rev.1.1

2019-09-27

TLE9461ES

Lite CAN SBC Family

Pin Configuration

3.3

Hints for Unused Pins

In case functions or pins are not used, it must be ensured that the configurations are done properly, e.g.

disabled via SPI. Unused pins should be handled as follows:

• WK/VSENSE: connect to GND and disable WK inputs via SPI

• RSTN / INTN / FO: leave open

• VCC2: leave open and keep disabled

• VCAN: connect to VCC1

• CANH/L, RXDCAN, TXDCAN: leave all pins open

• TEST: Leave open or connect to GND for normal user mode operation or connect to VIO to activate SBC

Development Mode;

• n.c.: not connected; internally not bonded; leave open

• If unused pins are routed to an external connector which leaves the ECU, then these pins should have

provision for a jumper (depopulated if unused)

3.4

Hints for Alternative Pin Functions

In case of SPI selectable alternative pin functions, it must be ensured that the correct configurations are also

selected via SPI (in case it is not done automatically). Please consult the respective chapter. In addition,

following topics shall be considered:

• WK/VSENSE: The pin can be either used as high-voltage wake-up and monitoring function or for a voltage

measurement function (via bit setting WK_MEAS = ‘1’). In the second case, the WK pin shall not be used /

assigned for any wake-up detection nor Cyclic Sense functionality, i.e. WK must be disabled in the register

WK_CTRL_1 and the level information must be ignored in the register WK_LVL_STAT.

• FO/GPIO: The pin can also be configured as a GPIO in the GPIO_CTRL register. In this case, the pin shall not

be used for any fail output functionality.

The default configuration after start-up or power on reset (POR) is FO.

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