HD64F2149 Datasheet, PDF (341/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Bit 6—Input Capture Flag B (ICFB): This status flag indicates that the FRC value has been
transferred to ICRB by means of an input capture signal. When BUFEB = 1, ICFB indicates that
the old ICRB value has been moved into ICRD and the new FRC value has been transferred to
ICRB.
ICFB must be cleared by software. It is set by hardware, however, and cannot be set by software.
Bit 6
ICFB
0
1
Description
[Clearing condition]
(Initial value)
Read ICFB when ICFB = 1, then write 0 in ICFB
[Setting condition]
When an input capture signal causes the FRC value to be transferred to ICRB
Bit 5—Input Capture Flag C (ICFC): This status flag indicates that the FRC value has been
transferred to ICRC by means of an input capture signal. When BUFEA = 1, on occurrence of the
signal transition in FTIC (input capture signal) specified by the IEDGC bit, ICFC is set but data is
not transferred to ICRC. Therefore, in buffer operation, ICFC can be used as an external interrupt
signal (by setting the ICICE bit to 1).
ICFC must be cleared by software. It is set by hardware, however, and cannot be set by software.
Bit 5
ICFC
0
1
Description
[Clearing condition]
Read ICFC when ICFC = 1, then write 0 in ICFC
[Setting condition]
When an input capture signal is received
(Initial value)
Bit 4—Input Capture Flag D (ICFD): This status flag indicates that the FRC value has been
transferred to ICRD by means of an input capture signal. When BUFEB = 1, on occurrence of the
signal transition in FTID (input capture signal) specified by the IEDGD bit, ICFD is set but data is
not transferred to ICRD. Therefore, in buffer operation, ICFD can be used as an external interrupt
by setting the ICIDE bit to 1.
ICFD must be cleared by software. It is set by hardware, however, and cannot be set by software.
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