at89c51ac3-s3sim ATMEL Corporation, at89c51ac3-s3sim Datasheet - Page 30

• Manufacturer Part Number: at89c51ac3-s3sim
• Description: At89c51ac3 Enhanced 8-bit Microcontroller With 64kb Flash Memory
• Manufacturer: ATMEL Corporation

Reset Output
30
AT89C51AC3
As detailed in Section “Watchdog Timer”, page 79, 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 resis-
tor must be added as shown Figure 18.
Figure 18. Recommended Reset Output Schematic
VDD
VDD
VSS
+
RST
1K
RST
AT89C51AC3
4383D–8051–02/08
To other
on-board
circuitry