PMM3101 Ver la hoja de datos (PDF) - Unspecified
Número de pieza
componentes Descripción
Fabricante
PMM3101 Datasheet PDF : 3 Pages
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Function of each terminal
Terminal name
Vref
Clock
Hold
CW/CCW
Enable
Reset
Function
Motor current setting input
Pulse input for motor drive
Pause input
Motor rotational direction setting input
Power off input
System reset
Input condition for operation
–
Operates at the rising edge
Hold = "L" level
"H" level = CW rotation
"L" level = CCW rotation
Enable = "L" level
Reset = "L" level
Energization mode table
Input condition
Mode A
Mode B
L
L
L
H
H
L
H
H
Energization mode
2EX
2–3EX
W2–3EX
2W2–3EX
1 step angle
(degree)
1.2
0.6
0.3
0.15
Basic step division number
1
2
4
8
Example of Application Circuit
Vcc2(5V)
Clock
Mode A
Mode B
Hold
CW / CCW
Enable
Reset
+ R1
C4
R2
PMM3101
18
10
11
12
13
14
15
16
Vref
9
C3
17
6
7
1
2
3
19
5
20
4
21
8 22 23
+
C2
Vcc1
16~30V
3
2
+
C1
1
Stepping motor
P.GND
Recommended circuit part constants
C1
220µF
C2
2.2µF
C3
0.1µF
C4
10µF
For the R1 and R2 constants, determine the Vref voltage
according to the following equation.
Vref (V) = motor current adjustment value (A/phase) x 1.3
Notice that 100Ω is recommended for R2 due to the configuration
of the internal circuit of the PMM3101.
Place the GND side of the source by-pass capacitor of VCC1 (C1)
as close to pins 22 and 23 as possible to reduce noise.
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