71m6521fe Maxim Integrated Products, Inc., 71m6521fe Datasheet - Page 28

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

Special Function Registers for the WD Timer
Interrupt Enable 0 Register (IEN0):
Interrupt Enable 1 Register (IEN1):
Interrupt Priority 0 Register (IP0):
Page: 28 of 101
IEN0.6
IEN1.6
Bit
Bit
Note: The remaining bits in the IEN1 register are not used for watchdog control
MSB
MSB
MSB
EXEN2
EAL
--
Symbol
Symbol
SWDT
WDT
Note: The remaining bits in the IEN0 register are not used for watchdog control
SWDT
WDTS
WDT
Function
Watchdog timer refresh flag.
Set to initiate a refresh of the watchdog timer. Must be set directly before SWDT is
set to prevent an unintentional refresh of the watchdog timer. WDT is reset by
hardware 12 clock cycles after it has been set.
Function
Watchdog timer start/refresh flag.
Set to activate/refresh the watchdog timer. When directly set after setting WDT, a
watchdog timer refresh is performed. Bit SWDT is reset by the hardware 12 clock
cycles after it has been set.
Table 29: The IEN1 Register (see also Tables 30/31)
Table 27: The IEN0 Register (see also Table 32)
IP0.5
Table 31: The IP0 Register (see also Table 45)
EX6
© 2005-2008 TERIDIAN Semiconductor Corporation
ET2
Table 30: The IEN1 Bit Functions (see also Tables 30/31)
Table 28: The IEN0 Bit Functions (see also Table 32)
IP0.4
EX5
ES0
IP0.3
ET1
EX4
71M6521DE/71M6521FE
IP0.2
EX1
EX3
IP0.1
EX2
ET0
Energy Meter IC
IP0.0
EX0
LSB
LSB
LSB
DATASHEET
JANUARY 2008
v1.0