AMIS-30624 Datasheet, PDF (12/56 Pages) AMI SEMICONDUCTOR – I2C Microstepping Motordriver

AMIS-30624 I²C Microstepping Motordriver
Data Sheet
12.0 Typical Application
V_BAT
1 µF
C₁
220 nF ^C4
100 µF
C₅
CPN ^{C3 CPP VCP VBB}
VDD ⁹
10
11 12
3
C₂
C₆ 100 nF
VBB
19 _SWI ^R2
20
1 kΩ
I²C
bus
Connect
to V_BAT
or GND
SDA ₁
SCK ₂
AMIS-30624
R_{1 HW 8}
1 kΩ
56 4
7 14
TST1
TST2
GND
18 ^MOTXP
16 ^MOTXN
M
MOTYP
15
13 ^MOTYN
17
PC20060925.5
Figure 6: Typical Application Diagram
Notes:
(1)
(2)
(3)
(4)
(5)
All resistors are ± 5%, ¼ W.
Depending on the application, the ESR value and working voltage of C₁ must be carefully chosen.
C₂ must be a ceramic capacitor to assure low ESR.
C₃ and C₄ must be as close as possible to pins CPN, CPP, VCP, and VBB to reduce EMC radiation.
C₅ and C₆ must be close to pins VBB and GND.
13.0 Positioning Parameters
13.1 Stepping Modes
One of four possible stepping modes can be programmed:
• Half stepping
• 1/4 microstepping
• 1/8 microstepping
• 1/16 microstepping
Connect
to V_BAT
or GND
AMI Semiconductor – Apr. 2007, Rev 3.1, M-20664-003
12
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