Analog Devices SHARC ADSP-214 Series Hardware Reference Manual page 824

System Components
A simple power-up reset circuit is shown in
ADM809-RART reset generator. The ADM809 provides an active low
signal whenever the supply voltage is below 2.63 V. At power-up, a
RESET
240 ms active reset delay is generated to give the power supplies and oscil-
lators time to stabilize.
V DDEXT
V CC
ADM809-RART
GND
Figure 23-13. Simple Reset Generator
Another part, the ADM706TAR, provides power on
manual . It allows designers to create a more complete supervisory
RESET
circuit that monitors the supply voltage. Monitoring the supply voltage
allows the system to initiate an orderly shutdown in the event of power
failure. The ADM706TAR also allows designers to create a watchdog
timer that monitors for software failure. This part is available in an 8-lead
SOIC package.
ADM706TAR.
23-42
www.BDTIC.com/ADI
10μF
RESET
Figure 23-14 shows a typical application circuit using the
ADSP-214xx SHARC Processor Hardware Reference
Figure 23-13 using the
V D D IN T
V DDEXT
V DDINT
ADSP-214xx
RESET
GND
and optional
RESET