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| X5163S8IZT1 Datasheet, PDF (6/22 Pages) Intersil Corporation – Selectable watchdog timer | |||
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X5163, X5165
VTRIP PROGRAMMING
EXECUTE
RESET VTRIP
SEQUENCE
SET VCC = VCC APPLIED =
DESIRED VTRIP
NEW VCC APPLIED =
OLD VCC APPLIED + ERROR
EXECUTE
SET VTRIP
SEQUENCE
APPLY 5V TO VCC
DECREMENT VCC
(VCC = VCC - 50MV)
NEW VCC APPLIED =
OLD VCC APPLIED - ERROR
EXECUTE
RESET VTRIP
SEQUENCE
NO
RESET PIN
GOES ACTIVE?
YES
ERROR > -EMAX
MEASURED VTRIP â
DESIRED VTRIP
ERROR > EMAX
ERROR < EMAX
EMAX = MAXIMUM DESIRED ERROR
DONE
FIGURE 3. VTRIP PROGRAMMING SEQUENCE FLOW CHART
4.7K
VTRIP
ADJ.
PROGRAM
NC
+
X5163, X5165
1
8
2
7
3
6
4
5
10K
10K
Submit Document Feedback
6
FIGURE 4. SAMPLE VTRIP RESET CIRCUIT
VP
NC
4.7K
RESET
NC
RESET VTRIP
TEST VTRIP
SET VTRIP
FN8128.4
August 13, 2015
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