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L8229 Datasheet(PDF) 30 Page - STMicroelectronics

Part # L8229
Description  Dual DMOS full bridge stepper/DC motor driver
PDF  42 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L8229 Datasheet(HTML) 30 Page - STMicroelectronics

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Obsolete
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SPI programming
L8229
30/42
9.2
Timings Control
All timings are controlled by a master oscillator that can be internal or externally provided. At
power up, OSC will default to the internal 4MHz oscillator. Setting W2 bits 9 and 10 will
select the external oscillator frequency or it's dividing by either 2 or 4.
The switching blanking time for masking transient can be selected by W2 bits 7 and 8.
1
0
0
0
1
17/31
1
0
0
1
0
18/31
1
0
0
1
1
19/31
1
0
1
0
0
20/31
1
0
1
0
1
21/31
1
0
1
1
0
22/31
1
0
1
1
1
23/31
1
1
0
0
0
24/31
1
1
0
0
1
25/31
1
1
0
1
0
26/31
1
1
0
1
1
27/31
1
1
1
0
0
28/31
1
1
1
0
1
29/31
1
1
1
1
0
30/31
1
1
1
1
1
31/31
Table 28.
Current levels selected by W0 for DAC (continued)
Bit 7 (13)
Bit 6 (12)
Bit 5 (11)
Bit 4 (10)
Bit 3 (9)
IPH_A (B)/Imax
Table 29.
Oscillator frequency selected by W2
Bit 10
Bit 9
Freq
0
0
Internal (4MHz)
01
Ext
10
Ext/2
11
Ext/4
Table 30.
Blanking time selected by W2
Bit 8
Bit 7
Time
00
2/fosc
01
4/fosc
10
8/fosc
1
1
12/fosc



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