r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 361

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

10.4.2
In synchronous operation, the values in a number of TCNT counters can be rewritten
simultaneously (synchronous presetting). Also, a number of TCNT counters can be cleared
simultaneously by making the appropriate setting in TCR (synchronous clearing).
Synchronous operation enables TGR to be incremented with respect to a single time base.
Channels 0 to 4 can all be designated for synchronous operation. Channel 5 cannot be used for
synchronous operation.
Example of Synchronous Operation Setting Procedure:
Figure 10.12 shows an example of the synchronous operation setting procedure.
[1] Set to 1 the SYNC bits in TSYR corresponding to the channels to be designated for synchronous
[2] When the TCNT counter of any of the channels designated for synchronous operation is written to,
[3] Use bits CCLR2 to CCLR0 in TCR to specify TCNT clearing by input capture/output compare, etc.
[4] Use bits CCLR2 to CCLR0 in TCR to designate synchronous clearing for the counter clearing source.
[5] Set to 1 the CST bits in TSTR for the relevant channels, to start the count operation.
<Synchronous presetting>
Synchronous presetting
Synchronous Operation
Synchronous operation
operation.
the same value is simultaneously written to the other TCNT counters.
Set synchronous
Figure 10.12 Example of Synchronous Operation Setting Procedure
Set TCNT
operation
selection
[1]
[2]
Synchronous clearing
<Counter clearing>
source generation
clearing source
Select counter
Start count
channel?
Clearing
Yes
Section 10 Multi-Function Timer Pulse Unit 2 (MTU2)
No
[3]
[5]
Rev. 1.00 Sep. 21, 2007 Page 335 of 1124
<Synchronous clearing>
Set synchronous
counter clearing
Start count
REJ09B0402-0100
[4]
[5]