AT83C5122_08 ATMEL [ATMEL Corporation], AT83C5122_08 Datasheet - Page 173

• Manufacturer Part Number: AT83C5122_08
• Description: C51 Microcontroller with USB and Smart Card Reader Interfaces
• Manufacturer: ATMEL [ATMEL Corporation]

Reset pin
Long Reset
Reset Controlled by the User
4202F–SCR–07/2008
As explained in the POR section there is no need to use the reset pin as the internal
reset function at power up is ensured by the POR. Anyway, if some applications
requires a long reset, a reset controlled by the user or a reset controlled by external
superviser device, the use of the reset pin is necessary.
As the pad integrates an internal pull-up of 10K, only an external capacitor of at least 10
μF is required to have an impact on the reset duration.
Figure 103. Long Reset
The external capacitor is not needed if no long reset is required.
Figure 104. Reset Controlled by the User
10 μF
RST
RST
Vcc
Vcc
10 K
10 K
AT83R5122, AT8xC5122/23
Microcontrolleur
Microcontrolleur
Internal Reset
Internal Reset
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