INT E R F A C E C O N T R O L L E R
I N T E GR A T E D C I R C U ITS
TMC
4 01
S t e p / Di r e c t i o n
t o S P I c o n v e rt e r
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 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-
INTERFACE
• 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
• 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
µStep resolution
StallGuard
3
3
TMC401
Sequencer
e.g. TMC246
Driver
Step
Motor
10 mm
Valid
Error
Temperatur prewarning
StallGuard
and
Error Bit
Decoder
interface
Driver
serial
to driver
SPI
Disable
ORDER CODE
DESC R IP T IO N
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
TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
