Hardware manual

Rev. 3.0, 09/98, page 347 of 361
TCSRTimer Control/Status Register H'FFD1 TMR1
Bit
Initial value
Read/Write
7
CMFB
0
R/(W)*
1
6
CMFA
0
R/(W)*
1
5
OVF
0
R/(W)*
1
4
—
1
—
3
OS3*
2
0
R/W
0
OS0*
2
0
R/W
2
OS2*
2
0
R/W
1
OS1*
2
0
R/W
Note: Bit functions are the same as for TMR0.
*1
*2
Software can write a “0” in bits 7 to 5 to clear the flags, but cannot write a “1” in these bits.
When all four bits (OS3 to OS0) are cleared to “0,” output is disabled.
TCORATime Constant Register A H'FFD2 TMR1
Bit
Initial value
Read/Write
7
1
R/W
6
1
R/W
5
1
R/W
4
1
R/W
3
1
R/W
0
1
R/W
2
1
R/W
1
1
R/W
Note: Bit functions are the same as for TMR0.
TCORBTime Constant Register B H'FFD3 TMR1
Bit
Initial value
Read/Write
7
1
R/W
6
1
R/W
5
1
R/W
4
1
R/W
3
1
R/W
0
1
R/W
2
1
R/W
1
1
R/W
Note: Bit functions are the same as for TMR0.
TCNTTimer Counter H'FFD4 TMR1
Bit
Initial value
Read/Write
7
0
R/W
6
0
R/W
5
0
R/W
4
0
R/W
3
0
R/W
0
0
R/W
2
0
R/W
1
0
R/W
Note: Bit functions are the same as for TMR0.