System reset
ST10F276E
19.8
Reset application examples
Next two timing diagrams (Figure 40 and Figure 41) provides additional examples of
bidirectional internal reset events (Software and Watchdog) including in particular the
external capacitances charge and discharge transients (refer also to Figure 38 for the
external circuit scheme).
Figure 40. Example of software or watchdog bidirectional reset (EA = 1)
ꢀꢉꢁꢇ 4#, ꢍꢀꢁꢌꢆ Sꢏ
%).)4
ꢀ MS ꢍ#ꢀ CHARGEꢏ
ꢈꢌꢌꢆ 4#,
234/54
234).
6)(
6),
4FILTER 234
ꢘ ꢃꢉꢉ NS
4FILTER 234
ꢘ ꢃꢉꢉ NS
234&
IDEAL
20$
6),
234
ꢅ 4#,
;ꢃꢐꢉ=
7$4#/.
0ꢉ;ꢀꢃꢐꢀꢈ=
ꢉꢇH
ꢉ#H
ꢉꢉH
ꢀ#H
ꢘ ꢇ 4#,
.OT TRANSPARENT
4RANSPARENT
.OT TRANSPARENT
,ATCHING POINT
.OT TRANSPARENT
4RANSPARENT
.OT TRANSPARENT
0ꢉ;ꢀꢁꢐꢆ=
0ꢉ;ꢊꢐꢁ=
,ATCHING POINT
4RANSPARENT
.OT TRANSPARENT
.OT TRANSPARENT
.OT TRANSPARENT
,ATCHING POINT
,ATCHING POINT
.OT TRANSPARENT
0ꢉ;ꢀꢐꢉ=
'!0'2)ꢉꢉꢀꢀꢊ
126/235
Doc ID 12303 Rev 3
STMICROELECTRONICS [ ST ]
