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参数资料
| 型号： | E-L9935013TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2.5 A, PDSO20 |
| 封装： | ROHS COMPLIANT, POWER, MO-166, SOP-20 |
| 文件页数： | 16/29页 |
| 文件大小： | 311K |
| 代理商： | E-L9935013TR |
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L9935
Functional description
5.16
Application Information
For driving a stepper motor we suggest to use the following codes. The columned ’SDO
correct’ shows the data returned at SDO in correct function. The columns presented under
’Error cases’ display the diagnosis bits if errors are detected.
Examples of control sequences
Full step mode control sequences and diagnosis response.
These sequences are intended to give the user a good starting point for his software
development. Besides these two there are further possibilities how to implement control
sequences for this device (other currents, quarters step etc.).
Double errors: Double errors will create composite codes by an AND operation between
columns of the same dominance. Open and short to VS are the least dominant error codes.
(first 6 error code columns). Short to ground is the second dominant error code. detection of
short to gnd will overwrite error codes of the least dominant kind (open, short to VS).
Temperature pre alarm and thermal shut down are the most dominant error codes. Thermal
pre alarm returns error code 00 but the device still is working and returns the appropriate
operation code (bits 0..5).
Thermal shut down returns error code 00 and turns off the device. The opcode returned
corresponds the action eventually performed (bit 0..5 become 1).
For example open bridge A and simultaneously open bridge B will lead to error code 01 by
performing an AND operation between the two corresponding columns.
SDI
SDO
correct
Error cases and SDObit7, bit6
bit
A
O
P
E
N
B
O
P
E
N
A1
S
H
O
R
T
VS
A2
S
H
O
R
T
VS
B1
S
H
O
R
T
VS
B2
S
H
O
R
T
VS
A1
(1)
S
H
O
R
T
GND
A2
(1)
S
H
O
R
T
GND
B1
(1)
S
H
O
R
T
GND
B2
(1)
S
H
O
R
T
GND
therm.
alarm
shut down
(reset
operating
codes)
76543210 76543210
76
76543210
XX111111
SDO PRESENT LAST DATA OR 11111111 IN CASE PREV. STATE WAS STAND BY
XX011011
XX010011
XX010010
XX011010
XX011011
XX010011
XX010010
XX011010
11111111
11011011
11010011
11010010
11011010
11011011
11010011
11010010
11
01
11
01
11
01
11
01
11
01
11
01
11
01
11
01
11
01
11
01
11
01
11
01
11
01
11
01
11
10
01
11
10
01
11
10
01
11
10
11
10
01
11
10
01
11
10
01
11
10
00
00111111
1.
Motor resistance approximately 10
and V
S = 12V. So a short to ground only is detected on one branch of the bridge.
Lower resistivity of the motor may lead to detection of short to ground on both branches of the bridge leading to code 10 on
all steps.
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