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HT85F2240 датащи(PDF) 62 Page - Holtek Semiconductor Inc

номер детали HT85F2240
подробное описание детали  A/D Flash 8051 Core Low Pin Count MCU
PDF  147 Pages
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
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HT85F2240 датащи(HTML) 62 Page - Holtek Semiconductor Inc

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Rev. 1.10
6� of 147
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A/D Flash 8051 Core Low Pin Count MCU
HT85F2230/HT85F2240
IEN1 Register
SFR Address: A9h
Bit
7
6
5
4
3
2
1
0
Name
EXEN�
SWDT
—
—
—
—
ECCU1
ECCU0
R/W
R/W
R/W
—
—
—
—
R/W
R/W
POR
0
0
—
—
—
—
0
0
Bit 7
EXEN2: Timer 2 external reload interrupt enable
Described elsewhere
Bit 6
SWDT: Watchdog timer start/refresh flag
This bit is used to activate and refresh the watchdog timer.
When this bit is set to “1” directly after the WDT bit is set, a watchdog timer refresh
will be enabled. This bit is immediately cleared by hardware. This bit is always read as
“0”.
Bit 5~2
Unimplemented, read as “0”
Bit 1
ECCU1: CCU1 interrupt enable
Described elsewhere
Bit 0
ECCU0: CCU0 interrupt enable
Described elsewhere
WDTREL Register
SFR Address: 86h
Bit
7
6
5
4
3
2
1
0
Name
D7
D6
D�
D4
D�
D�
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit 7~0
Watchdog reload value
Reload value for the highest 8 bits of the watchdog timer.
This value is loaded to the Watchdog Timer when a refresh is triggered by the
consecutive setting of bits, WDT and SWDT.



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