Datasheet

STM6513 Pin descriptions
Doc ID 16490 Rev 2 9/29
Table 2. t
REC1
programmed by an ideal external capacitor
C
tREC
value (µF)
t
REC1
(ms)
(1)(2)
1. At 25 ° C. Example calculations based on an ideal capacitor. During application design and component
selection it should be considered that the current flowing into the external t
REC
programming capacitor
(C
tREC
) is on the order of 100 nA, therefore a low-leakage capacitor (ceramic or film capacitor) should be
used and placed as close as possible to the TREC
ADJ
pin. Also an adequate low-leakage PCB
environment should be ensured to prevent t
REC
accuracy from being affected. A recommended minimum
value of C
tREC
is 0.001 µF.
2. In case of repeated activations of the internal t
REC
timer, an interval of 10 ms min. is needed between t
REC
intervals to fully discharge C
tREC
, so that the next t
REC1
is as specified.
Closest common
C
tREC
value (µF)
Min. Typ. Max.
0.001 10 15 20 0.001
0.002 20 30 40 0.0022
0.01 100 150 200 0.01
0.014 140 210 280 0.015
0.028 280 420 560 0.027
0.056 560 840 1120 0.056
0.112 1120 1680 2240 0.12