h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 380

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 16-Bit Timer Pulse Unit (TPU)
• When TGR is an input capture register
Example of Buffer Operation Setting Procedure: Figure 10.18 shows an example of the buffer
operation setting procedure.
Rev. 5.00 Sep 22, 2005 page 354 of 1136
REJ09B0257-0500
Input capture
signal
When input capture occurs, the value in TCNT is transferred to TGR and the value previously
held in the timer general register is transferred to the buffer register.
This operation is illustrated in figure 10.17.
Buffer register
Select TGR function
Set buffer operation
<Buffer operation>
Buffer operation
Start count
Figure 10.18 Example of Buffer Operation Setting Procedure
Figure 10.17 Input Capture Buffer Operation
[1]
[2]
[3]
Timer general
[1] Designate TGR as an input capture register or
[2] Designate TGR for buffer operation with bits
[3] Set the CST bit in TSTR to 1 to start the count
register
output compare register by means of TIOR.
BFA and BFB in TMDR.
operation.
TCNT