NJU#7380E NJR, NJU#7380E Datasheet - Page 4

• Manufacturer Part Number: NJU#7380E
• Description: Motor / Motion / Ignition Controllers & Drivers Translator Lead Free Package
• Manufacturer: NJR
• Type: Stepper Motor Controller/Driverr

Specifications of NJU#7380E

• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 7 V
• Supply Current: 4 mA
• Mounting Style: SMD/SMT
• Package / Case: EMP-14
• Operating Temperature: - 40 C to + 85 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

NJU7380
phase stepper motor driver. Motor control is simply attained only by the pulse generator because you use it by
NJM3775 and the set.
open, the circuit will accept it as a HIGH level. In order to make noise-proof nature into the maximum, it is
necessary to connect an idle input terminal to V
NJU7380 contains all phase logic necessary to control the motor in a proper way. If any of the logic inputs are left
- 4 -
APPLACATION INFORMATION
FUNCTIONAL DESCRIPTION
LOGIC INPUT
NJU7380 is a transrator, intended to convert from input step and direction pulse to driver's phase signal for 2-
STEP – Stepping pulse
DIR – direction
mode, the pulse turns the stepping motor at the basic step angle. In half step mode, two pulses are required to
turn the motor at the basic step angle.
therefore be established before the start of the negative edge. Note the setup time ts in Figure 4.
NJU7380 and NJM3775 are connected to the motor. Although DIR can be modified this should be avoided
since a misstep of 1 pulse increment may occur if it is set simultaneous with the negative edge. See the timing
chart in Figure 4.
The built-in phase logic sequencer goes UP on every negative edge of the STEP signal (pulse). In full step
The DIR (direction) signal and HSM (half/full mode) are latched to the STEP negative edge and must
The DIR signal determines the step direction. The direction of the stepping motor depends on how the
Half／Full Step
GND(V
Direction
RESET
V
STEP
CC
CC
)
（+5V）
4.7 F
2
1
3
4
6
Fig.3 Typical stepper motor driver application with NJM3775.
DIR
HSM
RESET
Ct
SETP
SGND
V
DD
14
7
NJU
7380
PGND
8
ACD
9
Dis1
Dis2
MO
PB
PA
R
3
R
13
11
12
10
5
1
DD
10k
R
level.
2
MO
+5V
4 10k
10
14
12
16
9
7
12k
4700pF
Phase1
Dis1
VR1
Phase2
Dis2
VR2
RC GND
11
V
5,6,
17,18
CC
12
NJM3775
0.47
E
V
1
MM1
4
8
R
S
C
V
1
2
MM1
19
0.47
E
15
2
R
S
C
21
2
0.1 F
M
M
M
M
A2
B1
A1
B1
3
1
22
20
+
Pin number refer
to DIP package
GND(V
10 F
STEPPER
MOTOR
MM
V
)
MM