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LC898240-2H Datasheet(PDF) 5 Page - ON Semiconductor

No. de pieza LC898240-2H
Descripción Electrónicos  High Efficient Stepper Motor Controller
Download  23 Pages
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Fabricante Electrónico  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LC898240-2H Datasheet(HTML) 5 Page - ON Semiconductor

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LC898240
www.onsemi.com
5
PIN DESCRIPTION
1. HOLD
Hold E2PROM. It must be connected to DVDD1.
For more detail, see the E2PROM datasheet.
2. OE
Output Enable
For IO port control mode:
-
bit OERST = 0: OE acts as an input.
-
bit OERST = 1: OE acts as an output with
respect to the pin ST transparently.
For register control mode:
-
OE outputs the value of the bit OE_REG.
3. RSTO
Driver Reset Output
To force synchronization of the step position with
the driver, the driver reset pulse is output once an
electrical cycle, while the bit RSTAD is set 1.
For IO port control mode:
-
RSTO outputs with respect to the pin RSTI
transparently.
For register control mode:
-
RSTO outputs the value of the bit
RST_REG.
4. FR
Rotation Direction
For IO port control mode:
-
Input
For register control mode:
-
FR outputs the value of the bit FR_REG.
5. STP
Step Pulse Output
6. DVSS
Digital Ground
7. DVDD1
Power Supply for the E2PROM and the Digital
Portion of the Main Chip
8. RSTI
Driver Reset Input for IO Port Control Mode
For register control mode, it is ignored.
9. SO_M and 12. SO_E
E2PROM output. They must be connected on a
board.
10. CSB_M and 11. CSB_E
E2PROM chip select pins. They must be
connected on a board.
13. GAD
High Efficient Current Control Mode
The adaptive motor current control mode is
enabled by GAD = H or the bit GAD_REG = 1.
14. RSB
System Reset Input
LC898240 is reset by RSB = L. After the reset is
released, it will start the E2PROM data download
to the registers.
15. CLK
Clock Input
Frequency range is from 840kHz through 10MHz
16. TSMOD
Test Mode
It must be connected to DVSS or open.
17. VREFI
Reference Voltage Input
It must be connected to AVDD.
18. VREFO
Current Control Reference Voltage Output
19. ADCI
ADC Input
20. AVSS
Ground of the Analog Portion
21. AVDD
Power Supply for the Analog Portion
22. AMPO
Amplifier Output
23. OUTAI and 24. OUTBI
Motor Signal Input
25. WP
Write Protection of E2PROM
26. NC, 32. NC and 35. NC
No Connection
27. INTP1 and 28. INTP0
Interpolation Setting for the Acceleration Curve
For IO port control mode:
-
INTP[1:0] = 0h: not interpolation
-
INTP[1:0] = 1h: interpolate 1 point between
the steps based on E2PROM data
-
INTP[1:0] = 2h: interpolate 3 point between
the steps based on E2PROM data
-
INTP[1:0] = 3h: interpolate 7 point between
the steps based on E2PROM data
For register control mode, it is ignored.


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