HT45F75 Datasheet, PDF (58/190 Pages) Holtek Semiconductor Inc – Body Fat Scale Flash MCU

HT45F75
Body Fat Scale Flash MCU
WDTC Register
Bit
Name
R/W
POR
7
WE4
R/W
0
6
WE3
R/W
1
5
WE2
R/W
0
4
WE1
R/W
1
3
WE0
R/W
0
2
WS2
R/W
0
1
WS1
R/W
1
0
WS0
R/W
1
Bit 7~3
Bit 2~0
WE4~WE0: WDT function software control
If the WDT configuration option is “always enable”:
10101 or 01010: Enable
Others: Reset MCU
If the WDT configuration option is “controlled by the WDT control register”:
10101: Disable
01010: Enable
Others: Reset MCU
When these bits are changed by the environmental noise or software setting to reset
the microcontroller, the reset operation will be activated after 2~3 fSUB clock cycles
and the WRF bit in the CTRL register will be set high.
WS2~WS0: WDT time-out period selection
000: 2⁸/fS
001: 2¹⁰/fS
010: 2¹²/fS
011: 2¹⁴/fS
100: 2¹⁵/fS
101: 2¹⁶/fS
110: 2¹⁷/fS
111: 2¹⁸/fS
CTRL Register
Bit
Name
R/W
POR
Bit 7
Bit 6~3
Bit 2
Bit 1
Bit 0
7
6
5
4
3
2
1
0
FSYSON —
—
—
—
LVRF
LRF
WRF
R/W
—
—
—
—
R/W
R/W
R/W
0
—
—
—
—
x
0
0
“x” unknown
FSYSON: fSYS Control in IDLE Mode
Described elsewhere.
Unimplemented, read as “0”
LVRF: LVR function reset flag
Described elsewhere.
LRF: LVR Control register software reset flag
Described elsewhere.
WRF: WDT Control register software reset flag
0: Not occur
1: Occurred
This bit is set high by the WDT Control register software reset and cleared by the
application program. Note that this bit can only be cleared to zero by the application
program.
Rev. 1.10
58
December 14, 2016