NJM2671 JRC, NJM2671 Datasheet
NJM2671
Related parts for NJM2671
NJM2671 Summary of contents
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... STEPPER MOTOR CONTROLLER / DRIVER GENERAL DESCRIPTION NJM2671 is a two-phase unipolar stepping motor driver with a motor output of a maximum and a maximum current of 500 mA. The Step&Dir (Pulse Input) system of the motor controller enables simple switching between half and full step modes. ...
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... NJM2671 www.DataSheet4U.com BLOCK DIAGRAM STEP PHASE DIR LOGIC HSM RESET RESET INH TSD PIN DESCRIPTION Pin Pin name 1 PB2 2 PB1 3 GND 4 PA1 5 PA2 6 DIR 7 STEP HSM 11 INH RESET Vcc - 2 - VCC POR Fig.2 Block Diagram Description B2 phase output with a maximum 500 mA sinking open collector output ...
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... R SYMBOL TEST CONDITION I 1 INH=LOW INH=HIGH CC TSD - V Io=350mA PCE Sat Vi=2. =2. =0. Io=1.6mA O Sat NJM2671 (Ta=25 C) MIN. MAX. UNIT 500 -0 - -40 +150 C - -50 150 1.3 W (Ta=25 C) MAX. UNIT ...
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... The DIR signal determines the step direction. The direction of the stepping motor depends on how the NJM2671 is connected to the motor. Although DIR can be modified this should be avoided since a misstep of 1 pulse increment may occur set simultaneous with the negative edge. See the timing chart in Figure 4. ...
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... HSM,DIR STEP,RESET Fig.4 Timing chart Ver.2004-09-25 Vcc STEP RESET PB1/PA1 PB2/PA td POR function NJM2671 approx 3.0V 4.0V Normal Normal Phase sequence sequence output OFF After internal phase logic initialize output Fig.5 POR and external reset timing - 5 - ...
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... NJM2671 www.DataSheet4U.com Fig. 6-1 Full step mode and CS sequence Fig. 7-1 Full step mode sequence Fig. 8-1 Half step mode and CW sequence Fig. 9-1 Half step mode sequence Fig. 10 Half step mode, INH sequence - 6 - STEP POR PB1 OFF OFF ON ON PB2 ON ON ...
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... Refer to the turn-off circuit described in Figures 11 to 14. 8. Using an MO output Hazard may occur at the MO output terminal in half step mode. Check the output waveform and connect a 1,000 pF or higher ceramic capacitor between the MO terminal (pin 15) and the GND terminal (pin 3). Ver.2004-09-25 NJM2671 - 7 - ...
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... NJM2671 www.DataSheet4U.com Fig. 11 Diode and turn off circuit Fig. 13 Zener diode and turn off circuit - 8 - Fig. 12 Resistor and turn off circuit Fig. 14 Power regeneration and turn off circuit Ver.2004-09-25 ...
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... ELECTRICAL CHARACTERISTICS EXAMPLES Fig. 15 Ambient temperature vs. allowable power dissipation characteristics example [mA] Fig. 17 Logic output saturation voltage vs. output current characteristics example Ver.2004-09-25 NJM2671 Fig. 16 Phase output saturation voltage vs. output current characteristics example Fig. 18 Allowable dissipation vs. phase output current characteristics (@ full step ...
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... NJM2671 www.DataSheet4U.com MEMO - 10 - [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights ...