Page 36 - CNC Robotics

Chapter 2 / Electronics

L297-1297D

MOTOR DRIVING PHASE SEQUENCES (continued)
WAVE DRIVE MODE
Wave drive mode (also called "one-phase-on" drive) is selected by a low level on the HALF/F'O[[ input
when the translatoris at an even numbered state (2, 4, 6 or 8).

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ELECTRICAL CHARACTERISTICS (Refer to the block diagram Tamb = 25"C, V s = 5V unless otherwise
specified)
Symbo l Param eter Testcondltlons Min. Typ Max. Uni t
V, Supply voltage (pin 12) 4.75 7 V
Qui escent supply current (pin 12) Outpu ts float ing 50 BO mA
"
V, Input voltage l ow 0.6 V
(pin 11,17,18, 19, 20)
High 2 V, V
" Input current Vj", L ' 00 pA
(pin 11, 17, 18, 19, 20)
VI""H 10 pA
V~ Enable input voltage (pin 10j low 1.3 V
High 2 V, V
~ , Enable inp ut cu rren t (pin 10) V....'" L 100 pA
V en ", H 10 pA
v; Phase outpu t voltage I" =l OmA V",- OA V
(pins 4, 6, 7, 9)
1 0 = 5mA VOH 3.9 V
V,nll Inhibit output voltage (pins 5, 8) 1 0= 10mA ViM L OA V
1 0 = SmA Vir>h H 3.9 V
VSYNC Sync Output Voltage 1 0 = SmA VSYNC H 3.3 V
1 0 = 5mA VSYNCv O.B
6111

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