h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 1471

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

TCNT0—Timer Counter 0
RSTCSR—Reset Control/Status Register
Bit
Initial value
Read/Write
Notes: RSTCSR register differs from other registers in being more difficult to write to.
Bit
Initial value
Read/Write
Note: TCNT0 register differs from other registers in being more difficult to write to.
For details see section 12.2.4, Notes on Register Access.
Watchdog Overflow Flag
For details see section 12.2.4, Notes on Register Access.
* Can only be written with 0 for flag clearing.
0
1
[Clearing condition]
• Cleared by reading RSTCSR when WOVF = 1, then writing 0 to WOVF
[Setting condition]
• Set when TCNT overflows (changed from H'FF to H'00) during watchdog timer
operation
R/(W)*
WOVF
R/W
7
0
7
0
Note: * The modules within the H8S/2646 are not reset,
Reset Enable
RSTE
R/W
R/W
0
1
6
0
6
0
Reset signal is not generated if TCNT overflows*
Reset signal is generated if TCNT overflows
but TCNT and TCSR within the WDT are reset.
Reset Select
RSTS
R/W
R/W
1
0
5
0
5
0
Reset
Do not set
R/W


4
0
Up-counter
4
0
Rev. 6.00 Feb 22, 2005 page 1411 of 1484
H'FF74(W), H'FF75(R)
H'FF76(W), H'FF77(R)
R/W


3
0
3
0
Appendix B Internal I/O Register
R/W


2
0
2
0
R/W


1
0
REJ09B0103-0600
1
0
R/W


0
0
0
0
WDT0
WDT0