ZHCSO45 October 2021 TCAN1044AEV-Q1
PRODUCTION DATA
The supply pins, VCC and VIO, have undervoltage detection that places the device into a protected state. This protects the bus during an undervoltage event on either supply pin.
| VCC | VIO | DEVICE STATE | BUS | RXD PIN |
|---|---|---|---|---|
| > UVVCC | > UVVIO | Normal | Per TXD | Mirrors bus |
| < UVVCC | > UVVIO | STB = High: Standby Mode | Weak biased to GND | VIO: Remote wake request See Section 8.4.3.1 |
| STB =Low: Protected Mode | High impedance | Recessive | ||
| > UVVCC | < UVVIO | Protected | High impedance | High impedance |
| < UVVCC | < UVVIO | Protected | High impedance | High impedance |
Once the undervoltage condition is cleared and tMODE has expired the TCAN1044AEV-Q1 will transition to normal mode and the host controller can send and receive CAN traffic again