upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 735
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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CAN Controller (CAN)
Figure 19-32
19.14.3 Self-test mode
In the self-test mode, message frame transmission and message frame
reception can be tested without connecting the CAN node to the CAN bus or
without affecting the CAN bus.
In the self-test mode, the CAN module is completely disconnected from the
CAN bus, but transmission and reception are internally looped back. The CAN
transmission pin (CTXDn) is fixed to the recessive level.
If the falling edge on the CAN reception pin (CRXDn) is detected after the CAN
module has entered the CAN sleep mode from the self-test mode, however,
the module is released from the CAN sleep mode in the same manner as the
other operation modes. To keep the module in the CAN sleep mode, use the
CAN reception pin (CRXDn) as a port pin.
CAN module terminal connection in self-test mode
Preliminary User’s Manual U17566EE1V2UM00
Fixed to
the recessive
level
CTXDn
Tx
CAN macro
CRXDn
Rx
Chapter 19
735
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