HD64F3437TF16 Datasheet, PDF (693/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

TCSR—Timer Control/Status Register
H'D1
TMR1
Bit
Initial value
Read/Write
7
6
5
4
CMFB CMFA OVF
—
0
0
0
1
R/(W)^*1 R/(W)^*1 R/(W) ^*1 —
3
OS3^*2
0
R/W
2
OS2^*2
0
R/W
1
OS1^*2
0
R/W
0
OS0^*2
0
R/W
Notes: Bit functions are the same as for TMR0.
*1 Software can write a 0 in bits 7 to 5 to clear the flags, but cannot write a 1 in these bits.
*2 When all four bits (OS3 to OS0) are cleared to 0, output is disabled.
TCORA—Time Constant Register A
H'D2
TMR1
Bit
7
6
5
4
3
2
1
0
Initial value
Read/Write
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Note: Bit functions are the same as for TMR0.
TCORB—Time Constant Register B
H'D3
TMR1
Bit
7
6
5
4
3
2
1
0
Initial value
Read/Write
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Note: Bit functions are the same as for TMR0.
TCNT—Timer Counter
H'D4
TMR1
Bit
7
6
5
4
3
2
1
0
Initial value
Read/Write
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Note: Bit functions are the same as for TMR0.
664