TMC4290 pages

MOTION CONTROLLER FOR STEPPER MOTORS

INTEGRATED CIRCUITS

TMC429 DATASHEET
Intelligent Triple Stepper Motor Controller with Serial Peripheral Interfaces and Step/Direction
Full Compatible Successor of the TMC428

APPLICATIONS
CCTV, Security
Antenna Positioning
Heliostat Controller
Battery powered applications
Office Automation
ATM, Cash recycler, POS
Lab Automation
Liquid Handling
Medical
Printer and Scanner
Pumps and Valves

FEATURES

AND

BENEFITS

DESCRIPTION

Controls up to three stepper motors
3.3 V or 5 V operation with CMOS / TTL compatible IOs
Serial 4-wire interface for µC with easy-to-use protocol
Interface for SPI™ motor drivers with data rates up to 1 Mbit/s
Step/Direction interface
Clock frequency: up to 32 MHz (can use CPU clock)
Internal position counters 24 bit wide
Microstep frequency up to 1 MHz
Read-out option for all motion parameters
Programmable 6 bit microstep table, up to 64 entries for a
quarter sine wave period
Ramp generators for autonomous positioning / speed control
On-the-fly change of target motion parameters
Power boost automatic acceleration dependent current control
Low power operation: 1.25 mA at 4 MHz (typ.)
Compact Size: ultra small 16 pin SSOP package, small 24 pin SOP
package, and 32 pin QFN 5x5 mm package
Directly controls TMC23x, TMC24x, TMC26x, and TMC389

The TMC429 is a miniaturized stepper motor
controller with an industry leading feature
set. It controls up to three motors via SPI or
Step/Direction interface. The SPI interface
provides a programmable 6 bit microstep
table (64 µsteps / fullstep) for best step
accuracy with 2-phase stepper motors. Based
on target positions and velocities - which can
be altered on the fly - it performs all real
time critical tasks autonomously. The TMC429
offers high level control functions for robust
and reliable operation. Two separate 4 wire
serial peripheral interfaces allow for
communication with the microcontroller and
with up to three daisy chained stepper motor
drivers.
Together with a microcontroller the TMC429
forms a complete motion control system.
High integration and small form factor allow
for miniaturized designs for cost-effective and
highly competitive solutions.

BLOCK DIAGRAM
3x Ref. Switches

TMC429

Ref. Switch
Processing

OUTPUT SELECT

- SPI
SPI to µC

SDO to µC
Muliplexed
Output

SPI to
Master

3x Linear
RAMP Generator

Interrupt
Controller

Step/Dir
Pulse
Generation

Position
Comparator
Microstep
Table

CLK

Position Compare OUT

TRINAMIC Motion Control GmbH & Co. KG
Hamburg, Germany

SPI to Stepper
Motor Driver 0/1/2

or
- Step/Dir

Serial Driver
Interface

Step/Dir OUT 0/1/2