NJU39612E2 NJR, NJU39612E2 Datasheet
NJU39612E2
Specifications of NJU39612E2
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NJU39612E2 Summary of contents
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... High-speed microprocessor interface • Full -scale error 1 LSB • Fast conversion speed 3 s • Matches the dual stepper motor drivers • Package EMP20 BLOCK DIAGRAM RESET Figure 1. Block Diagram PACKAGE OUTLINE Ref DA- Data DA- Data POR NJU39612 NJU39612E2 NJU39612 Sign Sign 2 ...
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... Sign 2. TTL/CMOS level connected directly to NJM377x phase input. Data bit D7 is transfered 2 non-inverted from NJU39612 data input Digital-to-Analog 2, voltage output. Output between 0.0 V and Reset Reset, digital input resetting internal registers. HIGH level = Reset, V internally ref Sign VDD 17 4 NJU39612E2 NJU39612 Reset DA 2 Sign 2 V ...
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DEFINITION OF TERMS Resolution Resolution is defined as the reciprocal of the number of discrete steps in the DAC output directly related to the number of switches or bits within the DAC. For example, NJU39612 has 2 bits ...
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Current Direction, Sign & Sign 1 These bits are transferred from D transfer table in figure 7. DA and These are the two outputs of DAC1 and DAC2. Input to the DACs are internal data bus (Q ...
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ABSOLUTE MAXIMUM RATINGS Parameter Voltage Supply Logic inputs Reference input Current Logic inputs Temperature Storage temperature Operating ambient temperature RECOMMENDED OPERATING CONDITIONS Parameter Supply voltage Reference voltage Rise and fall time of WR NJU39612 Pin no. Symbol Min 4 V ...
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ELECTRICAL CHARACTERISTICS Electrical characteristics over recommended operating conditions. Parameter Logic Input Reset logic HIGH input voltage Reset logic LOW input voltage Logic HIGH input voltage Logic LOW input voltage Reset input current Input current, other inputs Input capacitance Internal Timing ...
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D0- Sign Figure 8. Timing Reset Sign Figure 9. Timing of Reset DAC t pwr t res t pres NJU39612 ...
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APPLICATIONS INFORMATION How Many Microsteps? The number of true microsteps that can be obtained depends upon many different variables, such as the number of data bits in the Digital-to-Analog converter, errors in the converter, acceptable torque ripple, single- or double-pulse ...
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Time when motor compromise position. Time when micro position is correct. Write signal. Motor position. Writing to channel 1. Writing to channel 2. Double pulse write signal Ideal data = desired position Figure 10. Double pulse programming, ...
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Programming NJU39612 There are basically two different ways of programming the NJU39612. They are called “single-pulse programming” and “double-pulse programming.” Writing to the device can only be accomplished by addressing one register at a time. When taking one step, at ...
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Counter Clock Up/Dn Step Control Logic Direction Figure 12. Typical blockdiagram of an application without a microprocessor NJU39612 RESET 1 ...