AT89C51ID2-SLSIM Atmel, AT89C51ID2-SLSIM Datasheet - Page 32

• Manufacturer Part Number: AT89C51ID2-SLSIM
• Description: C51ID2 64KF TWI 32KHZ PLCC44 3-5.5V IND.
• Manufacturer: Atmel

Reset Output
32
AT89C51ID2
As detailed in Section “Hardware Watchdog Timer”, page 107, the WDT generates a 96-
clock period pulse on the RST pin. In order to properly propagate this pulse to the rest of
the application in case of external capacitor or power-supply supervisor circuit, a 1 kΩ
resistor must be added as shown Figure 9.
Figure 9. Recommended Reset Output Schematic
VDD
VDD
VSS
+
RST
1K
RST
AT89C51ID2
To other
on-board
circuitry
4289C–8051–11/05