Eval¶

use dg409 to switch between sensors. (DG409 is 2:4 with 2 address lines, DG408 would be 1:8 with 3 address lines)
2x 5v output.
2x 3v output (switch lamps).
i2c RTC for date (standalone).
CAN for candis.
1xPWM output (trivial canio, workaround fuer lampen. Warum 2?)
1xPWM output buzzer; 17:[[https://www.homofaciens.de/technics-base-circuits-h-bridge_ge.htm]] muesst sein, mit not baustein.
Wenn invertiertes PWM-Signal vorhanden ist, spart man sich nen enable. NOT + NAND
Update via USB is a nice feature. Circuit already available.
SPI-Nand

Most things can be copied from candis.

https://www.nxp.com/docs/en/data-sheet/MC34933.pdf