h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 335

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Bit 2—Output Compare Flag B (OCFB): This status flag indicates that the FRC value matches
the OCRB value. This flag must be cleared by software. It is set by hardware, however, and cannot
be set by software.
Bit 1—Timer Overflow Flag (OVF): This status flag indicates that the FRC has overflowed
(changed from H'FFFF to H'0000). This flag must be cleared by software. It is set by hardware,
however, and cannot be set by software.
Bit 0—Counter Clear A (CCLRA): This bit selects whether the FRC is to be cleared at compare-
match A (when the FRC and OCRA values match).
Bit 2
OCFB
0
1
Bit 1
OVF
0
1
Bit 0
CCLRA
0
1
Description
[Clearing condition]
Read OCFB when OCFB = 1, then write 0 in OCFB
[Setting condition]
When FRC = OCRB
Description
[Clearing condition]
Read OVF when OVF = 1, then write 0 in OVF
[Setting condition]
When FRC changes from H'FFFF to H'0000
Description
FRC clearing is disabled
FRC is cleared at compare-match A
Rev. 4.00 Jun 06, 2006 page 281 of 1004
Section 11 16-Bit Free-Running Timer
REJ09B0301-0400
(Initial value)
(Initial value)
(Initial value)