L6470H STMicroelectronics, L6470H Datasheet - Page 42

• Manufacturer Part Number: L6470H
• Description: Motor / Motion / Ignition Controllers & Drivers 8 - 45V 7.0A 1/128 Microstepping SPI
• Manufacturer: STMicroelectronics
• Type: Micro Stepping Motor Driverr
• Series: -r

Specifications of L6470H

• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 8 V to 45 V
• Supply Current: 0.5 mA
• Mounting Style: SMD/SMT
• Package / Case: HTSSOP-28
• Operating Temperature: - 40 C to + 125 C
• Applications: Stepper Motor Driver, 2 Phase
• Evaluation Tools: *
• Number Of Outputs: 1
• Current - Output: 3A
• Voltage - Load: 8 V ~ 45 V
• Voltage - Supply: 3.3V, 5V
• Mounting Type: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Programming manual
9.1.14
9.1.15
9.1.16
42/64
FN_SLP_DEC
The FN_SLP_DEC register contains the BEMF compensation curve slope that is used when
the speed is greater than the intersect speed during deceleration (see paragraph
details). Its value is expressed in s/step and the available range is from 0 to 0.004 with a
resolution of 0.000015.
When ST_SLP, FN_SLP_ACC and FN_SLP_DEC parameters are set to zero no BEMF
compensation is performed.
Any attempt to write the register when the motor is running causes the command to be
ignored and the NOTPERF_CMD flag to rise (see paragraph
K_THERM
The K_THERM register contains the value used by the winding resistance thermal drift
compensation system (see paragraph
The available range is from 1 to 1.46875 with a resolution of 0.03125 as shown in
Table 12.
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 paragraph
Table 13.
Greater than V
Lower than V
0
0
1
1
V
V
S
S
,
,
nom
nom
V
K_THERM [3..0]
S
V
Winding resistance thermal drift compensation coefficient
ADC_OUT value and motor supply voltage compensation feature
,
nom
S
+ 50%
S
0
0
1
1
– 50%
S
,
nom
,
nom
– 50%
+ 50%
0
0
1
1
V
ADCIN
Doc ID 16737 Rev 2
> 24/32
< 8/32
24/32
16/32
8/32
0
1
0
1
/V
REG
7.6
).
0
1
1
1
0
9.1.22
1
1
0
1
0
ADC_OUT
).
[4..0]
X
X
0
0
0
Compensation coeff.
X
X
0
0
0
9.1.22
1.03125
1.46875
1.4375
X
0
X
0
0
1
).
Compensation
coefficient
1.968875
1.968875
0.65625
0.65625
1
7.4
Table 12
for
L6470
.