NJU7384 Ver la hoja de datos (PDF) - Japan Radio Corporation
Número de pieza
componentes Descripción
Fabricante
NJU7384 Datasheet PDF : 10 Pages
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s TIMING CONDITION
STEP
DIR,HSM,
RESET,
ENABLE
t ONMIN
t DS
tDH
NJU7384
tOFFMIN
50%
s TRUTH TABLE
LOGIC IN
VDD
H
L
DIR
H
L
HSM
H
L
RESET
H
L
ENABLE
H
L
*VMM : Motor voltage supply
*OPERATE : Follow the input logic
*Hi Z : Output all off (A1, A2, B1,B2)
MODE
OPERATE
Hi Z
CW
CCW
FULL STEP
HALF STEP
OPERATE
RESET
OPERATE
Hi Z
s EXCITATION SEQUENCE
Condition: FULL STEP, HSM=ENABLE=RESET
Pulse
0
123
OUTA1
L HHL
OUTA2
H LLH
OUTB1
L LHH
OUTB2
H HLL
IA
- ++ -
IB
- - ++
DIR=HIGH CW
DIR=LOW CCW
Condition: HALF STEP, HSM=LOW, ENABLE=RESET=HIGH
Pulse
0
1
2
3
4
5
6
7
OUTA1
L Hi Z H
H
H Hi Z L
L
OUTA2
H Hi Z L
L
L Hi Z H H
OUTB1
L
L
L Hi Z H H H Hi Z
OUTB2
H
H H Hi Z L
L
L Hi Z
IA
-
0
+
+
+
0
-
-
IB
-
-
-
0
+
+
+
0
DIR=HIGH CW
DIR=LOW CCW
* Regarding the current flow direction, the direction A1→A2 and B1→B2 is indicated as +, and the direction A2→A1 and
B2→B1 is indicated as –.
Ver.2007-08-20
-5-
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