ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 53

• Manufacturer Part Number: ez80190
• Description: Ez80190 Microprocessor
• Manufacturer: ZiLOG Semiconductor

Watch-Dog Timer
PS006613-0306
Watch-Dog Timer Overview
The eZ80190 device includes a Watch-Dog Timer (WDT), which features:
•
•
•
Figure 6
Clock
Four programmable time-out periods: 2
A WDT time-out RESET indicator flag
A selectable time-out response: a time-out generates a RESET or a
nonmaskable interrupt
illustrates the block diagram for the Watch-Dog Timer.
Figure 6. Watch-Dog Timer Block Diagram
WDT Control Register
WDT Reset Register
Reset Control Logic
Watch-Dog Timer
Control Logic
Upcounter
Data[7:0]
Data[7:0]
and
and
PRELIMINARY
18
, 2
22
eZ80190 Product Specification
, 2
RESET
NMI to eZ80
25
, and 2
®
27
CPU
clock cycles
Watch-Dog Timer
39