STK672-050
2-3. RETURN (It forcibly returns the phase to the origin of current excitation phase.)
1. Pin format
sCMOS Schmitt configuration containing pull-up resistor
(20kΩ, typical value)
2. Noise eliminating circuit is contained.
3. Function
sForces to moves to the origin of current excitation phase by
setting the RETURN signal to high state.
2-4. ENABLE(ON/OFF control of excitation drive output A, A, B, and B and selection of
operation/hold state in hybrid-IC)
1. Pin format
sCMOS Schmitt configuration containing pull-up resistor
(20 kΩ, typical value)
2. Function
a. When the ENABLE signal is set to a high state or it is opened.
It is usually placed in the operation status.
b. When the ENABLE signal is set to a low state
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.
2-5. M1, M2, and M3 (Selection of excitation modes and clock input edge timing)
1. Pin format
sCMOS Schmitt configuration containing the pull-up resistor
(20 kΩ typical value)
2. Functions
M2
M3 M1
1
0
0
2 phase excitation
0
1
1-2 phase excitation
0
1-2 phase excitation
W1-2 phase
excitation
1
0
W1-2 phase
excitation
2W1-2 phase
excitation
1
1
2W1-2 phase
excitation
4W1-2 phase
excitation
Phase switching clock edge timing
Only the rising edge
Rising edge and falling edge
3. Valid timing of mode setting
sThe mode must not be changed within 5 µs from the rising edge and
falling edge of the clock.
No. 5228—6/11