h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 315

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Example of Buffer Operation Setting Procedure: Figure 10.14 shows an example of the buffer
operation setting procedure.
Examples of Buffer Operation:
1. When TGR is an output compare register
Figure 10.15 shows an operation example in which PWM mode 1 has been designated for
channel 0, and buffer operation has been designated for TGRA and TGRC. The settings used
in this example are TCNT clearing by compare match B, 1 output at compare match A, and 0
output at compare match B.
As buffer operation has been set, when compare match A occurs the output changes and the
value in buffer register TGRC is simultaneously transferred to timer general register TGRA.
This operation is repeated each time that compare match A occurs.
For details of PWM modes, see section 10.4.5, PWM Modes.
Buffer register
Input capture
signal
Figure 10.14 Example of Buffer Operation Setting Procedure
Select TGR function
Set buffer operation
<Buffer operation>
Buffer operation
Start count
Figure 10.13 Input Capture Buffer Operation
[1]
[2]
[3]
Timer general
register
[1]
[2]
[3]
Designate TGR as an input capture register or
output compare register by means of TIOR.
Designate TGR for buffer operation with bits
BFA and BFB in TMDR.
Set the CST bit in TSTR to 1 start the count
operation.
Rev. 2.00 Dec. 05, 2005 Page 277 of 724
Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT
REJ09B0200-0200