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L6470 Datasheet(PDF) 48 Page - STMicroelectronics

Part # L6470
Description  dSPIN fully integrated microstepping motor driver with motion engine and SPI
PDF  70 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6470 Datasheet(HTML) 48 Page - STMicroelectronics

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Programming manual
L6470
48/70
Doc ID16737 Rev 4
When the SYNC_EN bit is set low, BUSY/SYNC output is forced low during command
execution, otherwise, when the SYNC_EN bit is set high, BUSY/SYNC output provides a
clock signal according to the SYNC_SEL parameter.
The synchronization signal is obtained starting from electrical position information (EL_POS
register) according to Table 10:
9.1.20
ALARM_EN
The ALARM_EN register allows the selection of which alarm signals are used to generate
the FLAG output. If the respective bit of the ALARM_EN register is set high, the alarm
condition forces the FLAG pin output down.
Table 19.
SYNC output frequency
STEP_SEL (fFS is the full-step frequency)
000
001
010
011
100
101
110
111
000
fFS /2
fFS /2
fFS /2
fFS /2
fFS /2
fFS /2
fFS /2
fFS /2
001
NA
fFS
fFS
fFS
fFS
fFS
fFS
fFS
010
NA
NA
2· fFS
2· fFS
2· fFS
2· fFS
2· fFS
2· fFS
011
NA
NA
NA
4· fFS
4· fFS
4· fFS
4· fFS
4· fFS
100
NA
NA
NA
NA
8· fFS
8· fFS
8· fFS
8· fFS
101
NA
NA
NA
NA
NA
16· fFS
16· fFS
16· fFS
110
NA
NA
NA
NA
NA
NA
32· fFS
32· fFS
111
NA
NA
NA
NA
NA
NA
NA
64· fFS
Table 20.
SYNC signal source
SYNC_SEL[2..0]
Source
0
0
0
EL_POS[7]
0
0
1
EL_POS[6]
0
1
0
EL_POS[5]
0
1
1
EL_POS[4]
1
0
0
EL_POS[3]
1
0
1
EL_POS[2]
1
1
0
EL_POS[1]
1
1
1
EL_POS[0]



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