r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 395

• 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 18.18
• When 30-second adjustment (second data  30) occurs while the BSY bit in the TRESEC register = 0
• When 30-second adjustment (second data  30) occurs while the BSY bit in the TRESEC register = 1
18.3.6.2
TRESEC + TREMIN
TRESEC + TREMIN
The 30-second adjustment function rounds 29 seconds or less to 00 and 30 seconds or more to 00. When 1 is
written to the ADJ30S bit in the TREIFR register while the BSY bit in the TRESEC register is 0 (data not being
updated), the TRESEC register is adjusted by 30 seconds when the data is updated. When 1 is written to the
ADJ30S bit while the BSY bit is 1 (data being updated), the TRESEC register is adjusted by 30 seconds when
the data is updated the next time. The other timer RE2 data registers are not affected during 30-second
adjustment.
TRESEC register
TRESEC register
TREIFR register
TREIFR register
ADJ30S bit in
ADJ30S bit in
BSY bit in
BSY bit in
Registers
Registers
Preliminary document
Specifications in this document are tentative and subject to change.
30-Second Adjustment Function
Occurrence of 30-Second Adjustment (Second Data  30)
03 min 47 s
30-second adjustment operation
03 min 48 s
30-second adjustment operation
BSY calculation result
03 min 48 s
1 s
03 min 49 s
1 s
TRESEC register is set to 00h
TRESEC register is set to 00h
30-second adjustment result
30-second adjustment result
TREMIN register + 1
TREMIN register + 1
Page 364 of 725
04 min 00 s
04 min 00 s
18. Timer RE2