HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 845
HD6412340
Manufacturer Part Number
HD6412340
Description
H8S/2345 F-ZTAT Hardware Manual
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6412340.pdf
(907 pages)
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TCNT—Timer Counter
RSTCSR—Reset Control/Status Register
836
Bit
Initial value
Read/Write
The method for writing to TCNT is different from that for general registers to prevent inadvertent
overwriting. For details, see section 11.2.4, Notes on Register Access.
Bit
Initial value
Read/Write
Note: * Can only be written with 0 for flag clearing.
The method for writing to RSTCSR is different from that for general registers to prevent
inadvertent overwriting. For details see section 11.2.4, Notes on Register Access.
:
:
:
:
:
:
Watchdog Timer Overflow Flag
R/W
R/(W)*
WOVF
0
1
7
0
7
0
[Clearing condition]
Cleared by reading TCSR 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
Note: * The modules H8S/2355 Series are not reset, but TCNT
RSTE
Reset Enable
6
0
R/W
0
1
6
0
Reset signal is not generated if TCNT overflows*
Reset signal is generated if TCNT overflows
and TCSR in WDT are reset.
R/W
Reset Select
RSTS
0
1
5
0
R/W
5
0
Power-on reset
Manual reset
R/W
4
0
—
—
4
1
H'FFBC (W) H'FFBD (R)
H'FFBE (W) H'FFBF (R)
R/W
3
0
—
—
3
1
R/W
2
0
—
—
2
1
R/W
1
0
—
—
1
1
R/W
0
0
—
—
0
1
WDT
WDT
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