HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 260

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Bit 4—Input Capture Flag D (ICFD): Bit 4 is a status flag that indicates that the FRC value has
been transferred to ICRD by an input capture signal. If BUFEB is set to 1 in TCRX, ICFD is set
by the input capture signal even though the FRC value is not transferred to ICRD. In buffered
operation, ICFD can accordingly be used as an external interrupt, by setting the ICIDE bit to 1.
This flag is set by hardware and cleared by software. It cannot be set by software.
Bit 4: ICFD
0
1
Bit 3—Output Compare Flag A (OCFA): Bit 3 is a status flag that indicates that the FRC value
has matched OCRA. This flag is set by hardware and cleared by software. It cannot be set by
software.
Bit 3: OCFA
0
1
Bit 2—Output Compare Flag B (OCFB): Bit 2 is a status flag that indicates that the FRC value
has matched OCRB. This flag is set by hardware and cleared by software. It cannot be set by
software.
Bit 2: OCFB
0
1
Bit 1—Timer Overflow Flag (OVF): Bit 1 is a status flag that indicates that FRC has overflowed
from H'FFFF to H'0000. This flag is set by hardware and cleared by software. It cannot be set by
software.
252
Description
Clearing conditions:
After reading ICFD = 1, cleared by writing 0 to ICFD
Setting conditions:
Set by input capture signal
Description
Clearing conditions:
After reading OCFA = 1, cleared by writing 0 to OCFA
Setting conditions:
Set when FRC matches OCRA
Description
Clearing conditions:
After reading OCFB = 1, cleared by writing 0 to OCFB
Setting conditions:
Set when FRC matches OCRB
(initial value)
(initial value)
(initial value)