HD6417750RF240DV Datasheet, PDF (376/1132 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7750 Series

Section 11 Realtime Clock (RTC)
SH7750, SH7750S, SH7750R Group
Bit 7—Carry Flag (CF): This flag is set to 1 on generation of a second counter carry, or a 64 Hz
counter carry when the 64 Hz counter is read. The count register value read at this time is not
guaranteed, and so the count register must be read again.
Bit 7: CF
0
1
Description
No second counter carry, or 64 Hz counter carry when 64 Hz counter is
read
[Clearing condition]
When 0 is written to CF
Second counter carry, or 64 Hz counter carry when 64 Hz counter is read
[Setting conditions]
• Generation of a second counter carry, or a 64 Hz counter carry when
the 64 Hz counter is read
• When 1 is written to CF
Bit 4—Carry Interrupt Enable Flag (CIE): Enables or disables interrupt generation when the
carry flag (CF) is set to 1.
Bit 4: CIE
0
1
Description
Carry interrupt is not generated when CF flag is set to 1
Carry interrupt is generated when CF flag is set to 1
(Initial value)
Bit 3—Alarm Interrupt Enable Flag (AIE): Enables or disables interrupt generation when the
alarm flag (AF) is set to 1.
Bit 3: AIE
0
1
Description
Alarm interrupt is not generated when AF flag is set to 1
Alarm interrupt is generated when AF flag is set to 1
(Initial value)
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R01UH0456EJ0702 Rev. 7.02
Sep 24, 2013