TMC401 Datasheet, PDF (1/1 Pages) TRINAMIC Motion Control GmbH & Co. KG. – Step/Direction to SPI converter

INTERFACE CONTROLLER
INTEGRATED CIRCUITS
TMC401
Step / Direction
to SPI converter
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 stallGuard™ bits of a TMC246 or TMC249
motor driver are output on three pins, in order to allow an easy
usage of the stallGuard™ 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-warn-
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.
MAIN CHARACTERISTICS
• step / directon signal to SPI converter
• allow step-/direction control for TMC236,
TMC246, TMC239, TMC249 drivers
• outputs for stallGuard™ value and driver
OTPW flag
• resolution control from fullstep
up to 1/32 microsteps
• optional power down control
• mixed decay selectable
INTERFACE • step-/direction input up to 245kHz
• SPI output
ELECTRICAL • 5V supply
DATA
• 5V CMOS / TTL compatible IOs
PACKAGE • TQFP32 package
• RoHS compliant
+5V DC
Step/Dir
Power Down feature
Mixed Decay
µStep resolution
Sequencer
3
StallGuard
3
Valid
Error
Temperatur prewarning
Disable
StallGuard
and
Error Bit
Decoder
TMC401
serial
Driver
interface
Driver
e.g. TMC246
SPI
to driver
Step
Motor
10 mm
ORDER CODE
TMC401-PI
TMC32NPx-EVAL
DESCRIPTION
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