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| INTERFAC E C O N T R O L L E R I N T E G R A T E D C I R C U ITS TM C4 01 Step / Direc tion to SP I conver ter M A IN CH A R AC T ER IS T IC S INFO The TMC401 converts step/direction signals into SPI datagrams that can be used to drive a TMC236, TMC239, TMC246 or TMC249 stepper motor driver chip directly. It provides five different microstep resolutions (from 1/32 to 1/2) as well as two full step resolution modes. The stallGuardTM bits of a TMC246 or TMC249 motor driver are output on three pins, in order to allow an easy usage of the stallGuardTM feature. Also the overtemperature pre-warning bit is output on one extra pin (and can be used to shut off the driver when there is an overtemperature pre-warnINTERFACE * step / directon signal to SPI converter * allow step-/direction control for TMC236, TMC246, TMC239, TMC249 drivers * outputs for stallGuardTM value and driver OTPW flag * resolution control from fullstep up to 1/32 microsteps * optional power down control * mixed decay selectable * step-/direction input up to 245kHz * SPI output ELECTRICAL DATA ing condition). The TMC401 also provides a feature that reduces the motor current to 25% when there have not been any step pulses for at least one second. This features can be enabled or disabled. Mixed Decay can also be enabled or disabled using a dedicated pin. The evaluation board contains the TMC401 and different driver configurations of the TMC249 wit external MOSFETs. * 5V supply * 5V CMOS / TTL compatible IOs * TQFP32 package * RoHS compliant PACKAGE +5V DC Step/Dir Power Down feature Mixed Decay Step resolution StallGuard 3 3 TMC401 Sequencer e.g. TMC246 Driver Step Motor 10 m m Valid Error Temperatur prewarning StallGuard and Error Bit Decoder interface Driver serial to driver SPI Disable OR DE R C O DE D E S C RI P T I ON TMC401-PI TMC32NPX-EVAL Step / direction to SPI converter in TQFP-32 package Evaluation board for TMC401-PI, TMC249A-LA & TMC32NP-MLP, TMC249A-SA & TMC32NP2-SM8 and TMC249A-LA & TMC34NP-PSO www.trinamic.com - for detailed information and datasheets 9 |
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