njw4350 New Japan Radio Co.,Ltd, njw4350 Datasheet - Page 2

• Manufacturer Part Number: njw4350
• Description: Njw4350 Unipolar Stepper Motor Driver
• Manufacturer: New Japan Radio Co.,Ltd

NJW4350
- 2 -
BLOCK DIAGLAM
PIN DESCRIPTION
V
V
V
IN
IH
IL
I
IH
I
IL
V
VDD
MO
Pin
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
I
I
MO
MOLEAK
RESET
SGND
STEP
Pin name
HSM
DIR
INH
MO
RESET
PGND
SGND
STEP
HSM
VDD
PB1
PB2
PA1
PA2
DIR
INH
MO
NC
NC
NC
Description
B1 phase output with a maximum 1500 mA sinking open collector output
B2 phase output with a maximum 1500 mA sinking open collector output
Power ground terminal of motor supply VMM
A1 phase output with a maximum of 1500 mA sinking open collector
A2 phase output with a maximum of 1500 mA sinking open collector
Direction command input for determining motor turning direction
Motor stepping pulse input, phase logic operation triggered by negative
edge of STEP signal
Not connected
Not connected
Half/full step mode switching input
H level in full step mode and L level in half step mode
Phase output off input, all phase output is off at H level
External reset signal input terminal
Not connected
Logic ground terminal of logic supply VDD
Phase output initial status detection output
Logic unit power supply voltage terminal
PHASE LOGIC CIRCUIT
POWER ON RESET
Thermal Shut Down
VDD
Fig.2 Brock Diagram
NJW4350
PGND
PB1
PB2
PA1
PA2
I
PLEAK
I
I
O
DD
VMM
V
P
V
DD