Datasheet

Programming manual L6470
46/70 Doc ID16737 Rev 5
9.1.16 ADC_OUT
The ADC_OUT register contains the result of the analog-to-digital conversion of the ADCIN
pin voltage; the result is available even if the supply voltage compensation is disabled.
Any attempt to write to the register causes the command to be ignored and the
NOTPERF_CMD flag to rise (see Section 9.1.22).
9.1.17 OCD_TH
The OCD_TH register contains the overcurrent threshold value (see Section 6.9). The
available range is from 375 mA to 6 A, in steps of 375 mA, as shown in Ta b l e 1 5 .
9.1.18 STALL_TH
The STALL_TH register contains the stall detection threshold value (see Section 7.2). The
available range is from 31.25 mA to 4 A with a resolution of 31.25 mA.
1110 1.4375
1 1 1 1 1.46875
Table 13. Winding resistance thermal drift compensation coefficient (continued)
K_THERM [3..0] Compensation coeff.
Table 14. ADC_OUT value and motor supply voltage compensation feature
V
S
V
ADCIN
/V
REG
ADC_OUT
[4..0]
Compensation
coefficient
Greater than V
S
,
nom
+ 50% > 24/32 1 1 X X X 0.65625
V
S
,
nom
+ 50% 24/32 11000 0.65625
… … … … … … … …
V
S
,
nom
16/32 10000 1
… … … … … … … …
V
S
,
nom
– 50% 8/32 01000 1.968875
Lower than V
S
,
nom
– 50% < 8/32 0 0 X X X 1.968875
Table 15. Overcurrent detection threshold
OCD_TH [3..0] Overcurrent detection threshold
0000 375 mA
0001 750 mA
………… …
1 1 1 0 5.625 A
1111 6 A