GENERAL DESCRIPTION

The MSM9225B is a microcontroller peripheral LSI which conforms to the CAN protocol for high-speed LANs in automobiles.

FEATURES

• Conforms to CAN protocol specification (Bosch, V2.0 part B/Active)

• Maximum of 1 Mbps bit rate

• Communication method:

• Transmission line is bi-directional, two-wire serial communication

• NRZ (Non-Return to Zero) system using bit stuff function

• Multi-master system

• Broadcast system

• Message boxes:

• Up to 16 message boxes can be used, and messages up to 8 bytes long can be transmitted or received for each message box.

• Number of received messages can be extended by group message function (up to 2 groups can be set)

• Overwrite flag is provided

• Priority control by identifier

• 2032 types in standard format, 2032 × 218 types in extended format

• Microcontroller interface

• Corresponding to both parallel and serial interface

Parallel interface: Separate address/data bus type (with address latch signal/no address latch signal) and multiplexed address/data bus type

Serial interface: Synchronous communication type

• Three interrupt sources: Transmission/receive/error

• Error control:

• Bit error/stuff error/CRC error/form error/acknowledgment error detection functions

• Retransmission/error status monitoring function when error occurs

• Bit error flag/stuff error flag/CRC error flag/form error flag/acknowledge error flag are provided

• Communication control by remote data request function

• Sleep/Stop mode function

• Supply voltage: 5 V±10

• Operating temperature: –40 to +125°C

• Package: 44-pin plastic QFP (QFP44-P-910-0.80-2K) (Product name: MSM9225BGA-2K)