HD643303x Hitachi, HD643303x Datasheet - Page 503

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

TIOR0—Timer I/O Control Register 0
Bit
Initial value
Read/Write
I/O control B2 to B0
IOB2
Bit 6
0
1
I/O control A2 to A0
IOA2
Bit 2
IOB1
Bit 5
0
1
0
1
0
1
—
—
IOA1
7
1
Bit 1
IOB0
Bit 4
0
1
0
1
0
1
0
1
0
1
0
1
IOA0
Bit 0
IOB2
R/W
GRB Function
GRB is an output
compare register
GRB is an input
capture register
0
1
0
1
0
1
0
1
6
0
GRA Function
GRA is an output
compare register
GRA is an input
capture register
IOB1
R/W
5
0
488
IOB0
No output at compare match
0 output at GRB compare match
1 output at GRB compare match
Output toggles at GRB compare match
GRB captures rising edge of input
GRB captures falling edge of input
GRB captures both edges of input
R/W
4
0
No output at compare match
0 output at GRA compare match
1 output at GRA compare match
Output toggles at GRA compare match
GRA captures rising edge of input
GRA captures falling edge of input
GRA captures both edges of input
—
—
3
1
H'65
IOA2
R/W
2
0
IOA1
R/W
1
0
IOA0
R/W
0
0
ITU0