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Section 14 Realtime Clock
Page 696 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
Bit Bit Name
Initial
Value R/W Description
6 to 4 PES[2:0] 000 R/W Interrupt Enable Flags
These bits specify the periodic interrupt.
000: No periodic interrupts generated
001: Setting prohibited
010: Periodic interrupt generated every 1/64 second
011: Periodic interrupt generated every 1/16 second
100: Periodic interrupt generated every 1/4 second
101: Periodic interrupt generated every 1/2 second
110: Periodic interrupt generated every 1 second
111: Periodic interrupt generated every 2 seconds
3 RTCEN 1 R/W RTC_X1 Clock Control
Controls the function of RTC_X1 pin.
0: Halts the on-chip crystal oscillator/disables the
external clock input.
1: Runs the on-chip crystal oscillator/enables the
external clock input.
2 ADJ 0 R/W 30-Second Adjustment
When 1 is written to the ADJ bit, times of 29 seconds or
less will be rounded to 00 seconds and 30 seconds or
more to 1 minute. The divider circuit (prescaler and
R64CNT) will be simultaneously reset. This bit always
reads 0.
0: Runs normally.
1: 30-second adjustment.