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| 型号： | USB-EA-CONVZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 57/68页 |
| 文件大小： | 0K |
| 描述： | SUPPORT BOARD ADUC8XX |
| 标准包装： | 1 |
| 类型： | 仿真器 |
| 适用于相关产品： | ADuC8xx |
| 所含物品： | 模块 |
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REV. B
ADuC824
–60–
INTERRUPT SYSTEM
The ADuC824 provides a total of twelve interrupt sources with two priority levels. The control and configuration of the interrupt
system is carried out through three Interrupt-related SFRs.
IE:
Interrupt Enable Register.
IP:
Interrupt Priority Register.
IEIP2:
Secondary Interrupt Priority-Interrupt Register.
IE
Interrupt Enable Register
SFR Address
A8H
Power-On Default Value
00H
Bit Addressable
Yes
A
EC
D
A
E2
T
ES
E1
T
E1
X
E0
T
E0
X
E
Table XXX. IE SFR Bit Designations
Bit
Name
Description
7
EA
Written by User to Enable ‘1’ or Disable ‘0’ All Interrupt Sources
6
EADC
Written by User to Enable ‘1’ or Disable ‘0’ ADC Interrupt
5
ET2
Written by User to Enable ‘1’ or Disable ‘0’ Timer 2 Interrupt
4
ES
Written by User to Enable ‘1’ or Disable ‘0’ UART Serial Port Interrupt
3
ET1
Written by User to Enable ‘1’ or Disable ‘0’ Timer 1 Interrupt
2
EX1
Written by User to Enable ‘1’ or Disable ‘0’ External Interrupt 1
1
ET0
Written by User to Enable ‘1’ or Disable ‘0’ Timer 0 Interrupt
0
EX0
Written by User to Enable ‘1’ or Disable ‘0’ External Interrupt 0
IP
Interrupt Priority Register
SFR Address
B8H
Power-On Default Value
00H
Bit Addressable
Yes
—
C
D
A
P2
T
PS
P1
T
P1
X
P0
T
P0
X
P
Table XXXI. IP SFR Bit Designations
Bit
Name
Description
7
—
Reserved for Future Use
6
PADC
Written by User to Select ADC Interrupt Priority (‘1’ = High; ‘0’ = Low)
5
PT2
Written by User to Select Timer 2 Interrupt Priority (‘1’ = High; ‘0’ = Low)
4
PS
Written by User to Select UART Serial Port Interrupt Priority (‘1’ = High; ‘0’ = Low)
3
PT1
Written by User to Select Timer 1 Interrupt Priority (‘1’ = High; ‘0’ = Low)
2
PX1
Written by User to Select External Interrupt 1 Priority (‘1’ = High; ‘0’ = Low)
1
PT0
Written by User to Select Timer 0 Interrupt Priority (‘1’ = High; ‘0’ = Low)
0
PX0
Written by User to Select External Interrupt 0 Priority (‘1’ = High; ‘0’ = Low)
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