Datasheet

Functional description L6470
28/70 Doc ID16737 Rev 5
must be placed as close as possible to the pins. Refer to Tabl e 8 for the choice of load
capacitor values according to the external oscillator frequency.
If a direct clock source is used, it must be connected to the OSCIN pin and the OSCOUT pin
supplies the inverted OSCIN signal (see Figure 12).
Figure 12. OSCIN and OSCOUT pin configuration
Note: When OSCIN is UNUSED, it should be left floating.
When OSCOUT is UNUSED, it should be left floating.
6.9 Overcurrent detection
When the current in any of the Power MOSFETs exceeds a programmed overcurrent
threshold, the STATUS register OCD flag is forced low until the overcurrent event has
Table 8. CL values according to external oscillator frequency
Crystal/resonator freq.
(1)
1. First harmonic resonance frequency.
C
L
(2)
2. Lower ESR value allows the driving of greater load capacitors.
8 MHz 25 pF (ESR
max
= 80 Ω)
16 MHz 18 pF (ESR
max
= 50 Ω)
24 MHz 15 pF (ESR
max
= 40 Ω)
32 MHz 10 pF (ESR
max
= 40 Ω)
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