HD6433682 ETC, HD6433682 Datasheet - Page 247

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

2. When GR is an input capture register
3. Complementary PWM Mode
4. Reset Synchronous PWM Mode
5. Example of Buffer Operation Setting Procedure
When an input capture occurs, the value in TCNT is transferred to the general register and the
value previously stored in the general register is transferred to the buffer register.
This operation is illustrated in figure 13.36.
When the counter switches from counting up to counting down or vice versa, the value of the
buffer register is transferred to the general register. Here, the value of the buffer register is
transferred to the general register in the following timing:
A. When TCNT_0 and GRA_0 are compared and their contents match
B. When TCNT_1 underflows
The value of the buffer register is transferred from compare match A0 to the general register.
Figure 13.37 shows an example of the buffer operation setting procedure.
Buffer register
Input capture
signal
Start count operation
Set buffer operation
<Buffer operation>
Figure 13.37 Example of Buffer Operation Setting Procedure
Select GR function
Buffer operation
Figure 13.36 Input Capture Buffer Operation
[1]
[2]
[3]
register
Buffer
[1] Designate GR as an input capture register
[2] Designate GR for buffer operation with bits
[3] Set the STR bit in TSTR to 1 to start the
or output compare register by means of
TIOR.
BFD1, BFC1, BFD0, or BFC0 in TMDR.
count operation of TCNT.
Rev. 3.00, 05/03, page 217 of 472
TCNT