ADUC816 Analog Devices, ADUC816 Datasheet - Page 60

• Manufacturer Part Number: ADUC816
• Description: Precision Analog Microcontroller: 1MIPS 8052 MCU + 8kB Flash + Dual 16-Bit ADC + 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC816

• Mcu Core: 8052
• Mcu Speed (mips): 1.3
• Sram (bytes): 256Bytes
• Gpio Pins: 34
• Adc # Channels: 4

INTERRUPT SYSTEM
The ADuC816 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:
IP:
IEIP2:
IE:
SFR Address
Power-On Default Value
Bit Addressable
Bit
7
6
5
4
3
2
1
0
IP:
SFR Address
Power-On Default Value
Bit Addressable
Bit
7
6
5
4
3
2
1
0
E
-
- -
A
Name
EA
EADC
ET2
ES
ET1
EX1
ET0
EX0
Name
---
PADC
PT2
PS
PT1
PX1
PT0
PX0
E
P
Interrupt Enable Register.
Interrupt Priority Register.
Secondary Interrupt Priority-Interrupt Register.
A
A
D
D
C
C
Written by User to Enable “1” or Disable “0” ADC Interrupt
Written by User to Enable “1” or Disable “0” External Interrupt 0
Interrupt Priority Register
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 Timer 1 Interrupt Priority (“1” = High; “0” = Low)
Written by User to Select Timer 0 Interrupt Priority (“1” = High; “0” = Low)
Interrupt Enable Register
A8H
00H
Yes
Description
Written by User to Enable “1” or Disable “0” All Interrupt Sources
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
B8H
00H
Yes
Description
Reserved for Future Use.
Written by User to Select UART Serial Port Interrupt Priority (“1” = High; “0” = Low)
Written by User to Select External Interrupt 1 Priority (“1” = High; “0” = Low)
Written by User to Select External Interrupt 0 Priority (“1” = High; “0” = Low)
E
P
T
T
2
2
Table XXXI. IP SFR Bit Designations
Table XXX. IE SFR Bit Designations
E
P
S
S
E
P
T
T
1
1
E
P
X
X
1
1
E
P
T
T
0
0
E
P
X
X
REV. A
0
0