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L6474 bảng dữ liệu(PDF) 32 Page - STMicroelectronics

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L6474 bảng dữ liệu(HTML) 32 Page - STMicroelectronics

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Programming manual
L6474
32/51
Doc ID 022529 Rev 2
9
Programming manual
9.1
Registers and flags description
The following is a map of the user registers available (detailed description in respective
paragraphs):
Table 9.
Registers map
Address
[Hex]
Register
name
Register function
Len. [bit]
Reset
Hex
Reset Value
Remarks
(1)
h01
ABS_POS
Current position
22
000000
0
R, WR
h02
EL_POS
Electrical position
9
000
0
R, WR
h03
MARK
Mark position
22
000000
0
R, WR
h04
RESERVED
Reserved address
24
h05
RESERVED
Reserved address
16
h06
RESERVED
Reserved address
16
h07
RESERVED
Reserved address
16
h08
RESERVED
Reserved address
16
h15
RESERVED
Reserved address
16
R, WR
h09
TVAL
Reference current
7
29
1.3125 A
R, WR
h0A
RESERVED
Reserved address
8
h0B
RESERVED
Reserved address
8
h0C
RESERVED
Reserved address
8
h0D
RESERVED
Reserved address
16
h0E
T_FAST
Fast decay/fall step time
8
19
1 µs / 5 µs
R, WH
h0F
TON_MIN
Minimum ON time
7
29
20.5 µs
R, WH
h10
TOFF_MIN
Minimum OFF time
7
29
20.5 µs
R, WH
h11
RESERVED
Reserved address
8
h12
ADC_OUT
ADC output
5
XX (2)
R
h13
OCD_TH
OCD threshold
4
8
3.38A
R, WR
h14
RESERVED
Reserved address
8
h16
STEP_MODE Step mode
8
7
16 microsteps, no synch
R, WH
h17
ALARM_EN
Alarms enables
8
FF
All alarms enabled
R, WR
h18
CONFIG
IC configuration
16
2E88
Internal oscillator, 2 MHz
OSCOUT clock, supply
voltage compensation
disabled, overcurrent
shutdown enabled, slew-
rate = 290 V/µs TOFF = 40
µs
R, WH



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