stk672-050 Sanyo Semiconductor Corporation, stk672-050 Datasheet - Page 6

• Manufacturer Part Number: stk672-050
• Description: Microstep Operation-supported 4-phase Stepping Motor Driver Io= 3.0a
• Manufacturer: Sanyo Semiconductor Corporation

2-3. RETURN (It forcibly returns the phase to the origin of current excitation phase.)
2-4. ENABLE(ON/OFF control of excitation drive output A, A, B, and B and selection of
2-5. M1, M2, and M3 (Selection of excitation modes and clock input edge timing)
1. Pin format
2. Noise eliminating circuit is contained.
3. Function
1. Pin format
2. Function
1. Pin format
2. Functions
3. Valid timing of mode setting
M3
operation/hold state in hybrid-IC)
a. When the ENABLE signal is set to a high state or it is opened.
b. When the ENABLE signal is set to a low state
1
0
M2
M1
1-2 phase excitation
2 phase excitation
It is usually placed in the operation status.
The hybrid-IC is placed into the hold state, forcing the excitation drive output to be turned
off.
At this time, the system clock of the HC stops, the H-IC is not affected if the input pin other
than the reset input changes.
0
0
1-2 phase excitation
CMOS Schmitt configuration containing pull-up resistor
Forces to moves to the origin of current excitation phase by
CMOS Schmitt configuration containing pull-up resistor
CMOS Schmitt configuration containing the pull-up resistor
The mode must not be changed within 5 s from the rising edge and
(20k , typical value)
setting the RETURN signal to high state.
(20 k , typical value)
(20 k typical value)
falling edge of the clock.
W1-2 phase
excitation
0
1
STK672-050
2W1-2 phase
W1-2 phase
excitation
excitation
1
0
2W1-2 phase
4W1-2 phase
excitation
excitation
1
1
Phase switching clock edge timing
Only the rising edge
Rising edge and falling edge
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