Renesas R5S72621 User Manual

 

Section 11   Multi-Function Timer Pulse Unit 2 

 

R01UH0134EJ0400  Rev. 4.00  

 

Page 513 of 2108 

Sep 24, 2014 

 

 

 
SH7262 Group, SH7264 Group 

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. 

Figure 11.12 shows an example of the synchronous operation setting procedure. 

No

Yes

Set synchronous

operation

<Synchronous presetting>

<Counter clearing>

<Synchronous clearing>

Clearing

source generation

channel?

Select counter

clearing source

Start count

Set synchronous

counter clearing

Start count

[1]

[3]

[5]

[4]

[5]

[2]

Synchronous operation

selection

[1]  Set to 1 the SYNC bits in TSYR corresponding to the channels to be designated for synchronous 

operation.

[2]  When the TCNT counter of any of the channels designated for synchronous operation is written to, 

the same value is simultaneously written to the other TCNT counters.

[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.

Set TCNT

Synchronous presetting

Synchronous clearing