W78E516DDG Datasheet, PDF (58/90 Pages) Nuvotem Talema – 8-BIT MICROCONTROLLER

W78E516D/W78E058D Data Sheet
WIDL
IDLE
1/6
OSC
1/12
ENW
EXTERNAL
RESET
Pre-Scalar
14- BITTIMER
CLEAR
CLRW
Figure 15- 1 Watchdog Timer Block Diagram
Typical Watch-Dog time-out period when OSC = 20 MHz
PS2 PS1 PS0
Watchdog time-out period
00 0
19.66 mS
00 1
39.32 mS
01 0
78.64 mS
01 1
157.28 mS
10 0
314.57 mS
10 1
629.14 mS
11 0
1.25 S
11 1
2.50 S
Table 15- 1 Watch-Dog time-out period
INTERNAL
RESET
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