r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 386

• 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 18.9
Figure 18.10
Lower 11-bit counter
Lower 11-bit counter
Higher 4-bit counter
Higher 4-bit counter
TREADJ register
TREADJ register
During the first 1/16 second, the count of the correction
amount for the M in 001h to M is added and the frequency
is decreased
TREIFR register
TREIFR register
TADJSF bit in
TADJSF bit in
MINUS bit in
MINUS bit in
Preliminary document
Specifications in this document are tentative and subject to change.
Operation Example of Subtraction Correction by Software
(Correction during Current 1/16 Second)
Operation Example of Subtraction Correction by Software
(Correction during Next 1/16 Second)
7FFh 000h 001h
7FFh 000h 001h
The above diagram applies under the following conditions:
• AADJE bit in TRECR register = 0 (automatic correction function disabled (correction by software enabled))
• M: Value set in bits ADJ0 to ADJ5 in TREADJ register
The above diagram applies under the following conditions:
• AADJE bit in TRECR register = 0 (automatic correction function disabled (correction by software enabled))
• M: Value set in bits ADJ0 to ADJ5 in TREADJ register
A
A
Write 1 to MINUS bit
Write 1 to MINUS bit
count source
3 cycles of
• • • •
First 1/16 second
• • • •
First 1/16 second
count source
3 cycles of
A + 1
M
A + 1
Subtraction correction ends
M + 1
M
001h
• • • •
The counter value and the correction setting value M match
7FFh 000h 001h
• • • •
During the second 1/16
second, the correction amount
for the M in 001h to M is added to the counter
7FFh
000h 001h
Subtraction correction ends
• • • •
Second 1/16 second
Second 1/16 second
• • • •
M
A + 2
A + 2
001h 002h
The counter value and the
correction setting value M match
M
M + 1
• • • •
• • • •
Page 355 of 725
18. Timer RE2
7FFh 000h
7FFh 000h
A + 3
A + 3