The TMC-401 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-warning 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.
Specifications
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 data
5V supply required
5V CMOS / TTL compatible IOs
Package
TQFP32
RoHS compliant
The TMC-401 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-warning 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.
Specifications
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 data
- 5V supply required
- 5V CMOS / TTL compatible IOs
Package
