This document introduces the application of PCA82C250 and PCA82C251 transceivers produced by Guangzhou Zhouligong Single-chip Microcomputer Development Co., Ltd., including features such as operating modes, slope control function, and maximum bus line length.
The document introduces the PCA82C250 and PCA82C251 CAN transceivers, describing their role as the interface between a CAN controller and the physical bus. It outlines the three operating modes—high‑speed, slope‑control, and standby (prepare)—and discusses how each mode impacts bus performance and power consumption.
Detailed sections cover the slope‑control feature, calculations for conversion speed, and how the choice of external resistor (Rext) influences maximum bus length. The note also includes guidelines for bus termination, topology, and provides example calculations for both automotive and industrial applications. This manual is written in Chinese.
| Maximum instantaneous bus terminal voltage | PCA82C250: –150 V to +100 V, PCA82C251: –200 V to +200 V |
|---|---|
| Maximum bus length (high‑speed mode) | 0.5 km to 1 km depending on speed and topology |
Yes, the note states that both devices can be used in automotive and general industrial applications.