The MC33889 is a Freescale Semiconductor-based system chip compatible with CAN 2.0 A and B protocols for module-to-module communication.
The MC33889 is a System Basis Chip (SBC) that integrates a 5.0 V low‑dropout regulator, power‑management functions, a programmable watchdog, SPI interface and a low‑speed 125 kbps fault‑tolerant CAN transceiver for MCU‑based designs. It supports multiple power modes (Normal, Standby, Stop, Sleep) and offers an external high‑side switch capability.
Key features include a 200 mA regulated VDD1 output, a tracking V2 regulator, 150 mA output capability for the HS1 VBAT switch, and a 28‑pin SOICW package. The datasheet details pin assignments, maximum ratings, and static electrical characteristics for reliable system integration.
| Regulator output voltage (VDD1) | 5.0 V |
|---|---|
| VDD1 current capability | 200 mA |
| HS1 VBAT switch output current | 150 mA |
| CAN interface speed | 125 kbps (fault‑tolerant) |
| Sleep mode current consumption | 130 pA |
| Package type | 28‑pin SOICW |
The device includes a built‑in low‑speed 125 kbps fault‑tolerant CAN physical interface.
The VDD1 regulator can supply up to 200 mA of current.
The chip is available in a 28‑pin SOICW package.