W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 183

• Manufacturer Part Number: W83627UHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627UHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CR F6h. (WDTO# Counter Register; Default 00h)
CR F7h. (WDTO# Control & Status Register; Default 00h)
7~0
BIT
BIT
BIT
4
3
2
1
0
7
6
5
Reserved.
READ / WRITE
READ / WRITE
READ / WRITE
Write “1” Only
R / W
R / W
R / W
R / W
R / W
R / W
R / W
1000 times faster in WDTO# count mode.
0: Disable.
1: Enable.
(If bit-3 is Second Mode, the count mode is 1/1000 Sec.)
(If bit-3 is Minute Mode, the count mode is 1/1000 Min.)
Select WDTO# count mode.
0: Second Mode.
1: Minute Mode.
Enable the rising edge of KBC reset (P20) to issue time-out event.
0: Disable.
1: Enable.
Disable / Enable the WDTO# output low pulse to the KBRST# pin (PIN60)
0: Disable.
1: Enable.
Watch Dog Timer Time-out value. Writing a non-zero value to this
register causes the counter to load the value to Watch Dog Counter
and start counting down. If bits 7 and 6 of CR F7h are set, any
Mouse Interrupt or Keyboard Interrupt event will also cause the
reload of previously-loaded non-zero value to Watch Dog Counter
and start counting down. Reading this register returns current value
in Watch Dog Counter instead of Watch Dog Timer Time-out value.
00h: Time-out Disable
01h: Time-out occurs after 1 second/minute
02h: Time-out occurs after 2 second/minutes
03h: Time-out occurs after 3 second/minutes
……………………….......................................
FFh: Time-out occurs after 255 second/minutes
Mouse interrupt reset watch-dog timer enable
0: Watchdog timer is not affected by mouse interrupt.
1: Watchdog timer is reset by mouse interrupt.
Keyboard interrupt reset watch-dog timer enable
0: Watchdog timer is not affected by keyboard interrupt.
1: Watchdog timer is reset by keyboard interrupt.
Trigger WDTO# event. This bit is self-clearing.
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DESCRIPTION
DESCRIPTION
DESCRIPTION
Publication Release Date: March 24, 2008
W83627UHG
Revision 1.44