Datasheet

TMC429 DATASHEET (v. 1.07 / 2012-AUG-01) 4
Copyright © 2010-2012, TRINAMIC Motion Control GmbH & Co. KG
SCK_S_D1
SDO_S_S1
SDI_S_D2
nSCS_S_S2
REF2
REF3
REF1
TEST GND
SDI_C
nSCS_C
SCK_C
nINT_SDO_C
CLK
V5V33
TMC429-LI
nSCS3_D3
nSCS2_S3
POSCMP
REFR3
REFR2
REFR1
SDOZ_C
STP_3
DIR_3
STP_2
DIR_2
STP_1
DIR_1
MISO
MOSI
SCK
nSCS
µC
TMC262
TMC262
TMC262
Figure 1: TMC429 within QFN32 package.
All signals of the TMC429 are available for the QFN32 package. This package is recommended,
especially for the TMC260, TMC261, and TMC262 stepper motor drivers using step/direction interface.
STP
DIR
CSn
SCK
SDI
SDO
TMC26x #1
STP
DIR
CSn
SCK
SDI
SDO
TMC26x #2
STP
DIR
CSn
SCK
SDI
SDO
TMC26x #3
nSCS2_S3
nSCS3_D3
nSCS_S_S2
SDI_S_D2
SDO_S_S1
SCK_S_D1
SDI_S_D2
with pull-up R
nSCS_C
SCK_C
SDI_C
SDOZ_C
MOSI
MISO
SCK
TMC429
CSn_0
CSn_1
CSn_2
CSn_3
CLKCLK
Figure 2: TMC429 / TMC26x outline for configuration via SPI and step direction for motion (only
SPI signals and Step/Direcction signals drawn).
Application environment of TMC429 in QFN32 package and 3 x TMC26x stepper motor driver; one SPI
chip select signal CSN_0 selects the TMC429 SPI micro controller interface, and (up to) three SPI chip
select signals (CSN_3, CSN_2, CSN1) select the (up tp) three TMC262 SPI for configuration; the
TMC429 SDOZ_C is high impedance when nSCS_C is '1'.