ADUC812_03 Datasheet, PDF (38/60 Pages) Analog Devices – MicroConverter®, Multichannel 12-Bit ADC with Embedded Flash MCU

ADuC812
INTERRUPT SYSTEM
The ADuC812 provides a total of 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
IE2
Secondary Interrupt Enable Register
IE
SFR Address
Power-On Default Value
Bit Addressable
Interrupt Enable
Register
A8H
00H
Yes
EA
EADC
ET2
ES
ET1
EX1
ET0
EX0
Bit
Name
7
EA
6
EADC
5
ET2
4
ES
3
ET1
2
EX1
1
ET0
0
EX0
Table XXII. IE SFR Bit Designations
Description
Written by user to enable “1” or disable “0” all interrupt sources.
Written by user to enable “1” or disable “0” ADC interrupt.
Written by user to enable “1” or disable “0” Timer 2 interrupt.
Written by user to enable “1” or disable “0” UART serial port interrupt.
Written by user to enable “1” or disable “0” Timer 1 interrupt.
Written by user to enable “1” or disable “0” External Interrupt 1.
Written by user to enable “1” or disable “0” Timer 0 interrupt.
Written by user to enable “1” or disable “0” External Interrupt 0.
IP
SFR Address
Power-On Default Value
Bit Addressable
PSI
PADC
Bit
Name
7
PSI
6
PADC
5
PT2
4
PS
3
PT1
2
PX1
1
PT0
0
PX0
Interrupt Priority
Register
B8H
00H
Yes
PT2
PS
PT1
PX1
PT0
PX0
Table XXIII. IP SFR Bit Designations
Description
Written by user to select I²C/SPI priority (“1” = High; “0” = Low).
Written by user to select ADC interrupt priority (“1” = High; “0” = Low).
Written by user to select Timer 2 interrupt priority (“1” = High; “0” = Low).
Written by user to select UART serial port interrupt priority (“1” = High; “0” = Low).
Written by user to select Timer 1 interrupt priority (“1” = High; “0” = Low).
Written by user to select External Interrupt 1 priority (“1” = High; “0” = Low).
Written by user to select Timer 0 interrupt priority (“1” = High; “0” = Low).
Written by user to select External Interrupt 0 priority (“1” = High; “0” = Low).
–38–
REV. E