STK672-330 Sanyo Semicon Device, STK672-330 Datasheet - Page 6

• Manufacturer Part Number: STK672-330
• Description: Two-Phase Stepping Motor Driver
• Manufacturer: Sanyo Semicon Device

Note: In the STK672-350 and 360, the RESETB signal must be input at least 10 µs after the rise of the motor power
CLOCK (Phase switching clock)
• Input frequency: DC to 50 kHz
• Minimum pulse width: 10 µs
• Signals are read on the rising edge.
CWB (Motor direction setting)
The direction of rotation is switched by setting CWB to 1 (high) or 0 (low). See the timing charts for details on the
operation of the outputs.
Note: The state of the CWB input must not be changed during the 6.25 µs period before and after the rising edge of the
ENABLE (Forcible on/off control of the A, AB, B, and BB outputs, and selection of the operate or hold state for hybrid
IC internal operation)
ENABLE = 1 (high): Normal operation
ENABLE = 0 (low): Outputs A, AB, B, and BB forced to the off state.
If, during the state where CLOCK signal input is provided, the ENABLE pin is set to 0 (low) and then is later restored to
the 1 (high) state, the IC will resume operation with the excitation timing continued from before the point ENABLE was
set to 0 (low).
MODE (Excitation mode selection)
MODE = 0 (low): 2-phase excitation
MODE = 1 (high): 1-2 phase excitation
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 5 µs period before and after the rising edge of the
• Allowable motor current operating range
The motor current (I
For example, if the operating substrate temperature Tc is 105°C, then I
hold mode I
supply VCC level (10 V, minimum), not after the rise of the 5 V power supply (4.5 V, minimum).
CLOCK input.
CLOCK input.
O
must be held under I
O
) must be held within the range corresponding to the area under the curve shown in figure 3.
O
max = 1.5 A.
STK672-330
O
must be held under I
O
max = 1.8 A, and in
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