L6470HTR STMicroelectronics, L6470HTR Datasheet - Page 37

• Manufacturer Part Number: L6470HTR
• Description: IC STEPPER/DC MOTOR DVR 28HTSSOP
• Manufacturer: STMicroelectronics

Specifications of L6470HTR

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10812-2

L6470
Table 8.
1. R: Readable, WH: writable only when outputs are in high impedance, WS: writable only when motor is stopped, WR:
2. According to startup conditions.
9.1.1
9.1.2
Address
[Hex]
h1A
h1B
h18
h19
always writable.
Register name
RESERVED
RESERVED
Registers map (continued)
ABS_POS
The ABS_POS register contains the current motor absolute position in agreement to the
selected step mode; the stored value unit is equal to the selected step mode (full, half,
quarter, etc.). The value is in two'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 paragraph
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 9.
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 STEP_MODE register in order to avoid a wrong microstep
value generation (see paragraph
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 paragraph
CONFIG
STATUS
Bit 8
STEP
IC configuration
Status
Reserved address
Reserved address
EL_POS register
Bit 7
Register function
Bit 6
Doc ID 16737 Rev 2
9.1.19
Bit 5
Len.
[bit]
16
16
); otherwise the resulting microstep sequence will be
XXXX
Reset
2E88
Hex
Bit 4
(2)
MICROSTEP
Internal oscillator,
2MHz OSCOUT clock,
supply voltage compensation
disabled,
overcurrent shutdown enabled,
slew-rate = 290 V/µs
PWM frequency = 15.6kHz.
High impedance state,
UVLO/Reset flag set.
Bit 3
9.1.22
9.1.22
Reset
Value
Bit 2
).
).
Programming manual
Bit 1
21
to +2
Remarks
R, WH
21
(1)
Bit 0
R
-1.
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