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STK672-080-E View Datasheet(PDF) - SANYO -> Panasonic

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STK672-080-E Datasheet PDF : 18 Pages
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STK672-080-E
M1, M2, and M3 (Excitation mode and CLK input edge timing selection)
1) Pin circuit type: Built-in pull-up resistor (20kΩ, typical) CMOS Schmitt trigger structure
2) Function:
M2
0
0
1
1
M1
Phase switching clock edge timing
0
1
0
1
M3
1
2 phase excitation
1-2 phase excitation W1-2 phase excitation 2W1-2 phase excitation
Rising edge only
0
1-2 phase excitation W1-2 phase excitation 2W1-2 phase excitation 4W1-2 phase excitation
Rising and falling edges
3) Valid mode setting timing: Applications must not change the mode in the period 5μs before or after a CLK signal
rising or falling edge.
Mode Setting Acquisition Timing
CLK input
System clock
Mode setting
M1 to M3
Mode switching clock
Hybrid IC internal setting state
Mode switching timing
Phase excitation clock
Excitation counter up/down
A13265
RESET (Resets all parts of the system.)
1) Pin circuit type: Built-in pull-up resistor (20kΩ, typical) CMOS Schmitt trigger structure
2) Function:
- All circuit states are set to their initial values by setting the RESET pin low. (Note that the pulse width must be
at least 10μs.)
At this time, the A and B phases are set to their origin, regardless of the excitation mode. The output current
goes to about 71% after the reset is released.
3) Notes: When power is first applied to this hybrid IC, Vref must be established by applying a reset. Applications
must apply a power on reset when the VCC2 power supply is first applied.
Vref (Sets the current level used as the reference for constant-current detection.)
1) Pin circuit type: Analog input structure
2) Function:
- Constant-current control can be applied to the motor excitation current at 100% of the rated current by applying a
voltage less than the control system power supply voltage VCC2 minus 2.5V.
- Applications can apply constant-current control proportional to the Vref voltage, with this value of 2.5V as the
upper limit.
Output Pin Functions
Pin No.
14
Symbol
MOI
Function
Phase excitation origin monitor
Pin circuit type
Standard CMOS structure
Output Signal Functions and Timing
A, A, B, and B (Motor phase excitation outputs)
1) Function:
- In the 4 phase and 2 phase excitation modes, a 3.75μs (typical) interval is set up between the A and A and B and
B output signal transition times.
No.6507-9/18
 

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