L6470PD STMicroelectronics, L6470PD Datasheet - Page 41

• Manufacturer Part Number: L6470PD
• Description: Motor / Motion / Ignition Controllers & Drivers dSPIN 7.0A 8 - 45 V DMOS Motor Driver
• Manufacturer: STMicroelectronics
• Type: 2 Phase Stepper Motor Driverr

Specifications of L6470PD

• Rohs: yes
• Product: Stepper Motor Controllers / Drivers
• Operating Temperature: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Package / Case: POWERSO-36
• Number Of Outputs: 4
• Output Current: 3 A
• Output Voltage: 3.2 V
• Power Dissipation: 5 W

L6470
Table 9.
1. R: readable, WH: writable only when outputs are in high impedance, WS: writable only when motor is stopped, WR: always
2. According to startup conditions.
9.1.1
9.1.2
Address
[Hex]
h1A
h1B
h18
h19
writable.
Register name
RESERVED
RESERVED
Register map (continued)
ABS_POS
The ABS_POS register contains the current motor absolute position in agreement with the
selected step mode; the stored value unit is equal to the selected step mode (full, half,
quarter, etc.). The value is in 2's complement format and it ranges from -2
At power-on the register is initialized to “0” (HOME position).
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
EL_POS
The EL_POS register contains the current electrical position of the motor. The two MSbits
indicate the current step and the other bits indicate the current microstep (expressed in
step/128) within the step.
Table 10.
When the EL_POS register is written by the user, the new electrical position is instantly
imposed. When the EL_POS register is written, its value must be masked in order to match
with the step mode selected in the STEP_MODE register in order to avoid a wrong
microstep value generation (see
sequence is incorrect.
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
CONFIG
STATUS
Bit 8
STEP
IC configuration
Status
Reserved address
Reserved address
EL_POS register
Bit 7
Register function
Bit 6
Doc ID16737 Rev 5
Section
Bit 5
Len.
[bit]
16
16
XXXX
9.1.19); otherwise the resulting microstep
Reset
2E88
Hex
Bit 4
(2)
Internal oscillator, 2 MHz
OSCOUT clock, supply voltage
compensation disabled,
overcurrent shutdown enabled,
slew rate = 290 V/µs PWM
frequency = 15.6 kHz.
High impedance state,
UVLO/Reset flag set.
MICROSTEP
Section
Section
Bit 3
9.1.22).
9.1.22).
Reset
value
Bit 2
Programming manual
21
Bit 1
to +2
Remarks
21
R, WH
-1.
Bit 0
R
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