M54679FP Renesas Electronics Corporation., M54679FP Datasheet - Page 3

• Manufacturer Part Number: M54679FP
• Description: 2-phase Stepper Motor Driver
• Manufacturer: Renesas Electronics Corporation.

M54679FP
Block Diagram
Pin Function
Terminal
Motor Supply Voltage
Output terminals
Current sensor
Power supply
Phase input
Output current change
Standby input
Sense inputs
Vref input
Output of voltage stabilizer
A capacitor for oscillator
Power GND
Rev.1.0, Sep.19.2003, page 3 of 12
Regout
(3.5V)
Ph1A
Ph1B
I0(1)
I1(1)
Vref
18K
1.25V
10K
Rs1
Out1B
S1
Symbol
Vm1, Vm2
Out1A, Out1B, Out2A, Out2B
Rs1, Rs2
VCC
Ph1A, Ph1B, Ph2A, Ph2B
I0(1), I1(1), I0(2), I1(2)
Stby
S1, S2
Vref
Regout
Fref
P.GND
Source
PWM
P.GND
Vm1
Current
comp1
Standby
Stby
TSD
Out1A
Spike
current
cancel
R
S
FF1
P.GND
Q
Fref
Frequency
Generator
VTM
Q
FF2
Function
Power supply for motor drive.
Motor drive output terminals.
Output current sensing resistor (Rs) connection
terminals.
Control circuit power supply.
Output current change (100%, 70%, 33%, 0%) terminals.
Standby input (L: Standby, H or open: motor function)
terminal.
Input voltage terminal of comparators.
Reference voltage due to setting output current.
Output of voltage stabilizer (3.5V).
A capacitor due to PWM carrier frequency.
The GND terminal of bottom side flywheel diodes.
Output current direction switch terminals.
R
S
Spike
current
cancel
Out2A
Current
comp2
GND
Source
PWM
P.GND
VTH
VTL
Vm2
S2
Out2B
R
S
2
V
Ph2B
I0(2)
I1(2)
Ph2A
CC