r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 442

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
Figure 20.28
20.10.9 Count Source fOCO40M
The count source fOCO40M can be used with supply voltage VCC = 2.7 to 5.5 V. For supply voltage other than
that, do not set bits TCK2 to TCK0 in registers TRDCR0 and TRDCR to 110b (select fOCO40M as the count
source).
When the value in the buffer register is set to 0000h:
Transfer takes place at compare match between registers TRD0 and TRDGRA0.
After this, when the buffer register is set to 0001h or above and a smaller value than the value of the
TRDGRA0 register, and a compare match occurs between registers TRD0 and TRDGRA0 for the first time
after setting, the value is transferred to the general register. After that, the value is transferred with the timing
selected by bits CMD1 to CMD0.
TRDGRD0 register
TRDGRB0 register
TRDIOB0 output
TRDIOD0 output
The above applies under the following conditions:
• Bits CMD1 to CMD0 in the TRDFCR register are set to 10b (data in the buffer register is transferred at underflow of the TRD1 register in
• Both the OLS0 and OLS1 bits in the TRDFCR register are set to 1 (active “H” for normal-phase and counter-phase).
PWM mode).
Operation when Value in Buffer Register Is Set to 0000h in Complementary PWM
Mode
0000h
m+1
n2
n1
Transfer with timing
set by bits CMD1 to
CMD0
n2
Transfer
n1
n1
Transfer
Transfer at compare
match between
registers TRD0 and
TRDGRA0 because
content in TRDGRD0
register is set to
0000h.
0000h
0000h
m: Value set in TRDGRA0 register
Transfer at compare
match between
registers TRD0 and
TRDGRA0 because
of first setting to
0001h ≤ n1 < m
n1
Transfer
n1
Count value in TRD0 register
Transfer with timing
set by bits CMD1 to
CMD0
Transfer
Count value in TRD1 register
Page 410 of 740
20. Timer RD