STK672-642A-E Datasheet, PDF (12/21 Pages) Sanyo Semicon Device – Thick-Film Hybrid IC 2-phase Stepping Motor Driver

STK672-642A-E
[MODE1 and MODE2 (Excitation mode selection)]
MODE1=0: 2-phase excitation
MODE2=1: Rising edge of CLOCK
MODE1=1: 1-2 phase excitation
MODE2=0: Rising and falling edges of CLOCK
See the timing charts for details on output operation in these modes.
Note: The state of the MODE input must not be changed during the 5μs period before and after the rising edge of the
CLOCK input.
[Configuration of Each Input Pin]
<Configuration of the MODE1, MODE2, CLOCK, CWB, ENABLE, and RESETB input pins>
Input pins: Pin 10, 17, 12, 13, 15, and 14
5V
10kΩ
100kΩ
VSS
All input pins of this driver support schmitt input. Typ specifications at Tc = 25°C are given below. Hysteresis voltage
is 0.3V (VIHa-VILa).
When rising
1.8V typ
Input voltage
VIHa
When falling
1.5V typ
VILa
Input voltage specifications are as follows.
VIH=2.5V min
VIL=0.8V max
<Configuration of the FAULT Input Pin>
<Configuration of the Vref Input Pin>
Output pin
Pin 16
5V
VSS
Vref/4.9
-
+
Amplifier
100kΩ
VSS
VSS
Input pin
Pin 19
The internal impedance, 100kΩ, is designed so that the increase in current is prevented while Pin 19 is open.
The recommended Vref voltage is 0.14V or higher because the output offset voltage of Vref/4.9 amplifier cannot be
controlled down to 0V
No. A1589-12/21