upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 641

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

CAN Controller (CAN)
Function
Protocol
Baud rate
Data storage
Number of messages
Message reception
Message transmission
Remote frame processing
Time stamp function
Diagnostic function
Forced release from bus-
off state
Power save mode
Table 19-1
19.1.1 Overview of functions
Table 19-1 presents an overview of the CAN Controller functions.
Overview of functions
Preliminary User’s Manual U17566EE1V2UM00
Details
CAN protocol ISO 11898 (standard and extended frame transmission/reception)
Maximum 1 Mbps (CAN clock input ≥ 8 MHz)
Storing messages in the CAN RAM
• 32 message buffers per channel
• Each message buffer can be set to be either a transmit message buffer or a
• Unique ID can be set to each message buffer.
• Mask setting of four patterns is possible for each channel.
• A receive completion interrupt is generated each time a message is received
• Two or more receive message buffers can be used as a FIFO receive buffer
• Receive history list function
• Unique ID can be set to each message buffer.
• Transmit completion interrupt for each message buffer
• Message buffer number 0 to 7 specified as the transmit message buffer can be
• Transmission history list function
Remote frame processing by transmit message buffer
• The time stamp function can be set for a message reception when a 16-bit timer
• Readable error counters
• “Valid protocol operation flag” for verification of bus connections
• Receive-only mode
• Single-shot mode
• CAN protocol error type decoding
• Self-test mode
• Default mode can be set while bus is off, so that bus can be forcibly released
• CAN Sleep mode (can be woken up by CAN bus)
• CAN Stop mode (cannot be woken up by CAN bus)
receive message buffer.
and stored in a message buffer.
(multi-buffer receive block function).
set for automatic block transfer. Message transmission interval is programmable
(automatic block transmission function (hereafter referred to as “ABT”)).
is used in combination.
from the bus-off state.
Chapter 19
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