Renesas M16C/29 Series User Manual

puorG92/C61M
22. Usage Notes
page 443
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Figure 22.5 When Updating Period of CAN Module Matches Access Period from CPU
Figure 22.6 With a Wait Time of 3fCAN Before CPU Read
Figure 22.7 When Polling Period of CPU is 3fCAN or Longer
f CAN
✕: When the CAN module’s State_Reset bit updating period matches the CPU’s read
period, it does not enter reset mode, for the CPU read has the higher priority.
✕✕✕ ✕✕
CPU read signal
CPU reset signal
Updating period of
CAN module
C0STR register
b8: State_Reset bit
0: CAN operation
mode
1: CAN reset/initial-
ization mode
: Updated without fail in period of 3f CAN
CPU read signal
CPU reset signal
Updating period of
the CAN module
C0STR register
b8: State_Reset bit
Wait time
0: CAN operation
mode
1: CAN reset/initial-
ization mode
CPU read signal
CPU reset signal
Updating period of
the CAN module
C0STR register
b8: State_Reset bit
✕
4f CAN
0: CAN operation
mode
1: CAN reset/initial-
ization mode
: Updated without fail in period of 4fCAN
✕: When the CAN module’s State_Reset bit updating period matches the CPU’s read
period, it does not enter reset mode, for the CPU read has the higher priority.

Renesas M16C/29 Series Specifications

General

Brand	Renesas
Model	M16C/29 Series
Category	Microcontrollers
Language	English