71m6521fe Maxim Integrated Products, Inc., 71m6521fe Datasheet - Page 30

• Manufacturer Part Number: 71m6521fe
• Description: Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

On the next instruction cycle, the interrupt will be acknowledged by hardware forcing an LCALL to the appropriate vector
address, if the following conditions are met:
Special Function Registers for Interrupts:
Interrupt Enable 0 register (IE0)
Interrupt Enable 1 Register (IEN1)
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No interrupt of equal or higher priority is already in progress.
An instruction is currently being executed and is not completed.
The instruction in progress is not RETI or any write access to the registers IEN0, IEN1, IEN2, IP0 or IP1.
MSB
MSB
EAL
IEN0.7
IEN0.6
IEN0.5
IEN0.4
IEN0.3
IEN0.2
IEN0.1
IEN0.0
Bit
IEN1.7
IEN1.6
IEN1.5
IEN1.4
IEN1.3
IEN1.2
IEN1.1
IEN1.0
Bit
SWDT
WDT
Symbol
© 2005-2008 TERIDIAN Semiconductor Corporation
WDT
EAL
EX1
EX0
ES0
ET1
ET0
-
Symbol
SWDT
EX6
EX6
EX5
EX4
EX3
EX2
Table 36: The IEN0 Bit Functions
Table 38: The IEN1 Bit Functions
-
-
Table 35: The IEN0 Register
Table 37: The IEN1 Register
Function
EAL=0 – disable all interrupts
Not used for interrupt control
ES0=0 – disable serial channel 0 interrupt
ET1=0 – disable timer 1 overflow interrupt
EX1=0 – disable external interrupt 1
ET0=0 – disable timer 0 overflow interrupt
EX0=0 – disable external interrupt 0
Function
Not used for interrupt control
EX6=0 – disable external interrupt 6
EX5=0 – disable external interrupt 5
EX4=0 – disable external interrupt 4
EX3=0 – disable external interrupt 3
EX2=0 – disable external interrupt 2
EX5
ES0
ET1
EX4
71M6521DE/71M6521FE
EX1
EX3
Energy Meter IC
ET0
EX2
LSB
LSB
EX0
DATASHEET
JANUARY 2008
v1.0