HD643303x Hitachi, HD643303x Datasheet - Page 505

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

TSR0—Timer Status Register 0
Bit
Initial value
Read/Write
Note: Only 0 can be written, to clear the flag.
*
Overflow flag
0 [Clearing condition]
1 [Setting condition]
Read OVF when OVF = 1, then write 0 in OVF
TCNT overflowed from H'FFFF to H'0000
—
—
7
1
Input capture/compare match flag B
0 [Clearing condition]
1 [Setting conditions]
Read IMFB when IMFB = 1, then write 0 in IMFB
TCNT = GRB when GRB functions as a compare
match register.
TCNT value is transferred to GRB by an input capture
signal, when GRB functions as an input capture register.
Input capture/compare match flag A
—
—
6
1
0 [Clearing condition]
1 [Setting conditions]
Read IMFA when IMFA = 1, then write 0 in IMFA
TCNT = GRA when GRA functions as a compare
match register.
TCNT value is transferred to GRA by an input capture
signal, when GRA functions as an input capture register.
—
—
5
1
490
—
—
4
1
—
—
3
1
H'67
R/(W)
OVF
2
0
*
R/(W)
IMFB
1
0
*
R/(W)
IMFA
0
0
ITU0
*