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FDD8880

FDD8880

Manufacturer Part:FDD8880
Part Type:Power Management ICs
Manufacturer:Fairchild
Part ID:FDD8880
Date Code:11+
Quantity Available:8030
Last Updated:2024/11/29

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Description

Features

Applications

FDD8880 Description

    A short program illustrating the initialization and basic function of the watchdog timer is shown below. It illustrates the Timed Access feature, which prevents the accidental modification of the watchdog control bits. A Timed Access operation is a sequence of steps that must be executed together, in sequence; otherwise, the access fails. The example program shows the timed access being used for restarting the watchdog and enabling its reset. Further details on Timed Access operation may be found in the Secure Microcontroller User´s Guide. The watchdog timer bits that are protected by the Timed Access procedure are the Enable Watchdog Timer Reset (EWT;PCON.2) and Restart Watchdog Timer(RWT;IP.7) bits.

FDD8880 Features

    LED Drive Outputs (pins 7, 8, 9, and 10)  These four pins are driven to low levels when the  FDD8880 is transmitting or receiving RS232 or OBD  data. Otherwise, they are at a high level. Current  capability is suitable for directly driving most LEDs  through current limiting resistors. If unused, these  pins should be left open-circuited.

FDD8880 Applicatioins

    Technical/Catalog InformationFDD8880VendorFairchild SemiconductorCategoryDiscrete Semiconductor Products Mounting Type
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