PC87393VJG National Semiconductor, PC87393VJG Datasheet - Page 83

• Manufacturer Part Number: PC87393VJG
• Description: IC, SUPER I/O DEVICE, TQFP-100
• Manufacturer: National Semiconductor

Specifications of PC87393VJG

• Data Rate: 2Mbps
• Supply Voltage Range: 3V to 3.6V
• Logic Case Style: TQFP
• No. Of Pins: 100
• Operating Temperature Range: 0°C to +70°C
• Termination Type: SMD
• Transceiver Type: Interface
• Rohs Compliant: No

4.0 WATCHDOG Timer (WDT)
4.3.4
This register holds the WATCHDOG Timer status, which reflects the value of the WDO pin and indicates that the timeout
period has expired.
On reset or on WATCHDOG Timer activation, this register is initialized to 01h.
Location:
Type:
4.4 WATCHDOG TIMER REGISTER BITMAP
Bit
Name
Reset
Required
Offset Mnemonic
00h
01h
02h
7-1
Bit
0
Register
WATCHDOG Status Register (WDST)
Reserved
WDO Value. This bit reflects the value of the WDO signal (even if WDO is not configured for output).
0: WDO active
1: WDO inactive (default)
WDMSK
WDTO
WDST
Offset 02h
RO
7
0
0
7
6
0
6
Reserved
(Continued)
5
0
5
Reserved
Programmed Timeout Period
Description
83
Reserved
4
0
4
Bits
Serial Port 2
3
0
Enable
Trigger
IRQ
3
Serial Port 1
Enable
Trigger
2
0
IRQ
2
1
0
1
Reserved
WDO Value
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WDO
Value
0
1
0