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HT85F2250 数据表(PDF) 67 Page - Holtek Semiconductor Inc

部件名 HT85F2250
功能描述  A/D Flash 8051 Core Low Pin Count MCU
PDF  187 Pages
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制造商  HOLTEK [Holtek Semiconductor Inc]
网页  http://www.holtek.com
标志 HOLTEK - Holtek Semiconductor Inc

HT85F2250 数据表(HTML) 67 Page - Holtek Semiconductor Inc

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A/D Flash 8051 Core Low Pin Count MCU
HT85F2250/HT85F2262
IEN1 Register
SFR Address: A9h
Bit
7
6
5
4
3
2
1
0
Name
EXEN�
SWDT
—
ECMP
ECCU�
ECCU�
ECCU1
ECCU0
R/W
R/W
R/W
—
R/W
R/W
R/W
R/W
R/W
POR
0
0
—
0
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
Unimplemented, read as “0”
Bit 4
ECMP: Comparator overall interrupt enable
Described elsewhere
Bit 3
ECCU3: CCU3 interrupt enable
Described elsewhere
Bit 2
ECCU2: CCU2 interrupt enable
Described elsewhere
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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