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参数资料
型号： ADUC845BCPZ8-3
厂商： ANALOG DEVICES INC
元件分类： 微控制器/微处理器
英文描述： 8-BIT, FLASH, 12.58 MHz, MICROCONTROLLER, QCC56
封装： 8 X 8 MM, LEAD FREE, MO-220-VLLD-2, LFCSP-56
文件页数： 93/108页
文件大小： 1940K
代理商： ADUC845BCPZ8-3
ADuC845/ADuC847/ADuC848
Rev. B | Page 85 of 108
INTERRUPT SYSTEM
The ADuC845/ADuC847/ADuC848 provide nine 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 Enable Register
IE—Interrupt Enable Register
SFR Address:
A8H
Power-On Default:
00H
Bit Addressable:
Yes
Table 58. IE SFR Bit Designations
Bit No.
Name
Description
7
EA
Set by the user to enable all interrupt sources.
Cleared by the user to disable all interrupt sources.
6
EADC
Set by the user to enable the ADC interrupt.
Cleared by the user to disable the ADC interrupt.
5
ET2
Set by the user to enable the Timer 2 interrupt.
Cleared by the user to disable the Timer 2 interrupt.
4
ES
Set by the user to enable the UART serial port interrupt.
Cleared by the user to disable the UART serial port interrupt.
3
ET1
Set by the user to enable the Timer 1 interrupt.
Cleared by the user to disable the Timer 1 interrupt.
2
EX1
Set by the user to enable External Interrupt 1 (INT0).
Cleared by the user to disable External Interrupt 1 (INT0).
1
ET0
Set by the user to enable the Timer 0 interrupt.
Cleared by the user to disable the Timer 0 interrupt.
0
EX0
Set by the user to enable External Interrupt 0 (INT0).
Cleared by the user to disable External Interrupt 0 (INT0).
IP—Interrupt Priority Register
SFR Address:
B8H
Power-On Default:
00H
Bit Addressable:
Yes
Table 59. IP SFR Bit Designations
Bit No.
Name
Description
7
-----
Not Implemented. Write Don’t Care.
6
PADC
ADC Interrupt Priority (1 = High; 0 = Low).
5
PT2
Timer 2 Interrupt Priority (1 = High; 0 = Low).
4
PS
UART Serial Port Interrupt Priority (1 = High; 0 = Low).
3
PT1
Timer 1 Interrupt Priority (1 = High; 0 = Low).
2
PX1
INT0 (External Interrupt 1) priority (1 = High; 0 = Low).
1
PT0
Timer 0 Interrupt Priority (1 = High; 0 = Low).
0
PX0
INT0 (External Interrupt 0) Priority (1 = High; 0 = Low).
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