r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 264

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
Figure 15.3
15.4.2
Reload register
Count source
In this mode, the counter is decremented by the count source selected by bits TCK0 to TCK2 in the TRJMR
register.
In timer mode, the count value is decremented by 1 each time the count source is input. If the next count source
is input after the count value reaches 0000h, the set value in the reload register is loaded, and an underflow
occurs, generating an interrupt.
Figure 15.3 shows an Operation Timing Example in Timer Mode.
of counter
Timer RJ
counter
Timer Mode
0300h
Preliminary document
Specifications in this document are tentative and subject to change.
Operation Timing Example in Timer Mode
02FFh
The counter is reloaded with the reload
register value by the first count source.
Write 1010h to TRJ register by a program
Previous value (0300h)
02FEh 02FDh02FCh 02FBh 02FAh 02F9h 02F8h 02F7h 1010h 100Fh 100Eh 100Dh 100Ch •••••
New value (1010h)
••••• 0000h 1010h 100Fh 100Eh 100Dh 100Ch 100Bh
The counter is reloaded with the reload register
value on the completion of the 16-bit count.
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15. Timer RJ