STK672-630A-E Sanyo Semicon Device, STK672-630A-E Datasheet - Page 12

• Manufacturer Part Number: STK672-630A-E
• Description: 2-phase Stepping Motor Driver
• Manufacturer: Sanyo Semicon Device

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[MODE1 and MODE2 (Excitation mode selection)]
[Configuration of Each Input Pin]
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
<Configuration of the MODE1, MODE2, CLOCK, CWB, ENABLE, and RESETB input pins>
Input pins: Pin 10, 17, 12, 13, 15, and 14
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).
Input voltage specifications are as follows.
V IH =2.5V min
V IL =0.8V max
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
Output pin
Pin 16
CLOCK input.
<Configuration of the FAULT Input Pin>
Input voltage
When rising
1.8V typ
VIHa
5V
V SS
100kΩ
10kΩ
STK672-630A-E
<Configuration of the Vref Input Pin>
Vref/4.9
V SS
Amplifier
V SS
5V
100k
+
-
Ω
V SS
VILa
When falling
1.5V typ
Input pin
Pin 19
No. A1129-12/21
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