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 C 4 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 • step / directon signal to SPI converter that can be used to drive a TMC236, TMC239, TMC246 or TMC249 • allow step-/direction control for TMC236, TMC246, TMC239, TMC249 drivers stepper motor driver chip directly. It provides five different • outputs for stallGuard™ value and driver OTPW flag microstep resolutions (from 1/32 to 1/2) as well as two full step resolution modes. The stallGuard™ bits of a TMC246 or TMC249 • resolution control from fullstep up to 1/32 microsteps motor driver are output on three pins, in order to allow an easy usage of the stallGuard™ feature. Also the overtemperature • optional power down control pre-warning bit is output on one extra pin (and can be used to • mixed decay selectable shut off the driver when there is an overtemperature pre-warnINTERFACE ing condition). • step-/direction input up to 245kHz • SPI output 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 ELECTRICAL DATA • 5V supply • 5V CMOS / TTL compatible IOs PACKAGE Decay can also be enabled or disabled using a dedicated pin. • TQFP32 package • RoHS compliant The evaluation board contains the TMC401 and different driver configurations of the TMC249 wit external MOSFETs. +5V DC Step/Dir TMC401 Power Down feature Sequencer Mixed Decay µStep resolution StallGuard Driver e.g. TMC246 3 3 Valid Error Temperatur prewarning StallGuard and Error Bit Decoder serial Driver interface Step Motor 10 m m SPI to driver Disable OR DE R C O DE D E S C RI P T I ON TMC401-PI Step / direction to SPI converter in TQFP-32 package TMC32NPx-EVAL 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