Datasheet

71M6511/71M6511H
Single-Phase Energy Meter IC
DATA SHEET
NOVEMBER 2010
Page: 28 of 98 © 2005–2010 Teridian Semiconductor Corporation V2.7
A Maxim Integrated Products Brand
Interrupt Priority 0 Register (IP0):
MSB LSB
-- WDTS IP0.5 IP0.4 IP0.3 IP0.2 IP0.1 IP0.0
Table 30: The IP0 Register (see also Table 46)
Bit
Symbol
Function
IP0.6 WDTS Watchdog timer status flag. Set when the watchdog timer was started. Can be
read by software.
Table 31: The IP0 bit Functions (see also Table 46)
Note: The remaining bits in the IP0 register are not used for watchdog control
Watchdog Timer Reload Register (WDTREL):
MSB LSB
7 6 5 4 3 2 1 0
Table 32: The WDTREL Register
Bit
Symbol
Function
WDTREL.7 7
Prescaler select bit. When set, the watchdog is clocked through an additional
divide-by-16 prescaler
WDTREL.6
to
WDTREL.0
6-0
Seven bit reload value for the high-byte of the watchdog timer. This value is
loaded to the WDT when a refresh is triggered by a consecutive setting of bits
WDT and SWDT.
Table 33: The WDTREL Bit Functions
The WDTREL register can be loaded and read at any time.