LC898240_16 Datasheet, PDF (6/23 Pages) ON Semiconductor – High Efficient Stepper Motor Controller

LC898240
29. WSEL3, 30. WSEL2, 33. WSEL1 and 34. WSEL0
Acceleration Curve Selection
For IO port control mode:
- WSEL[3:0] = 0h: the acceleration curve #0
- WSEL[3:0] = 1h: the acceleration curve #1
- WSEL[3:0] = 2h: the acceleration curve #2
- WSEL[3:0] = 3h: the acceleration curve #3
- WSEL[3:0] = 4h: the acceleration curve #4
- WSEL[3:0] = 5h: the acceleration curve #5
- WSEL[3:0] = 6h: the acceleration curve #6
- WSEL[3:0] = 7h: the acceleration curve #7
- WSEL[3:0] = 8h: the acceleration curve #8
- WSEL[3:0] = 9h - Fh: N.A.
31. DVSS
Digital Ground
36. START
Motor Rotation Control
The bit STPSEL = 0: START acts as the step pulse
input
The bit STPSEL = 1: START acts as the start/stop
command input
37. DVDD1
Power Supply for the E2PROM and the Digital
Portion of the Main Chip
38. CSB, 39. SCK, 40. SI and 41. SO
SPI Interface
42. STS1 and 43. STS0
Status Output of LC898240
44. DVDD2
Power Supply for the Digital Portion of the Main
Chip
45. ST
Driver Standby
For IO port control mode:
- The bit DERST = 0: ST signal input
- The bit DERST = 1: ST signal input to
output to OE
For register control mode:
- ST outputs the value of the bit ST_REG.
- For the unipolar driver STK672-XXXX,
this pin must be open.
46. MD2, 47. MD1 and 48. MD0
Mode Switch
For IO port control mode: MD signal input
For register control mode: the value of the register
MD_REG is output.
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