L6470
Functional description
Doc ID 16737 Rev 2
25/64
If a direct clock source is used, it must be connected to OSCIN pin and OSCOUT pin
supplies the inverted OSCIN signal (see
).
Figure 10.
OSCIN and OSCOUT pins configurations
Note:
When OSCIN is UNUSED, it should be connected to ground.
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, STATUS register OCD flag is forced low until the overcurrent event is expired and
a GetStatus command is sent to the IC (see paragraphs
and
). Overcurrent
event expires when all the power MOSFET currents fall below the programmed overcurrent
threshold.
Table 7.
CL values according to external oscillator frequency
Crystal/resonator freq.
(1)
1.
First harmonic resonance frequency.
C
L
(2)
2.
Lower ESR value allows driving greater load capacitors.
8MHz
25pF (ESR
max
= 80
Ω
)
16MHz
18pF (ESR
max
= 50
Ω
)
24MHz
15pF (ESR
max
= 40
Ω
)
32MHz
10pF (ESR
max
= 40
Ω
)
!-V
5.53%$
/3#).
/3#/54
/3#).
/3#/54
/3#).
/3#/54
-(Z
-(Z
-(Z
%XTERNALOSCILLATOR
CONFIGURATION
%XTERNALCLOCKSOURCE
CONFIGURATION
)NTERNALOSCILLATOR
CONFIGURATION
WITHCLOCKGENERATION
/3#).
/3#/54
)NTERNALOSCILLATOR
CONFIGURATION
WITHOUTCLOCKSOURCE
5.53%$
5.53%$
/3#?3%,XX
/3#?3%,XX
#
,
#
,
%84?#,+
%84?#,+
