Datasheet
TMC5130A DATASHEET (Rev. 1.14 / 2017-MAY-15) 110
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26 Standalone Operation
For standalone operation, no SPI interface is required to configure the TMC5130A. All pins with suffix
CFG0 to CFG6 have a special meaning in this mode. They are evaluated using tristate detection, in
order to differentiate between
CFG pin tied to GND
CFG pin open (no connection)
CFG pin tied to VCC_IO
VCC_IO
TMC5130A
Step&Dir input
with microPlyer
STEP
DIR
5V Voltage
regulator
charge pump
22n
63V
100n
16V
CLK_IN
+V
M
5VOUT
VSA
4.7µ
+V
IO
GNDP
GNDA
TST_MODE
DIE PAD
VCC
opt. ext. clock
12-16MHz
3.3V or 5V
I/O voltage
100n
100n
Sequencer
Full Bridge A
Full Bridge B
+V
M
VS
stepper
motor
N
S
OA1
OA2
OB1
OB2
Driver
100n
BRB
100µF
CPI
CPO
BRA
R
SA
Use low inductivity SMD
type, e.g. 1206, 0.5W
R
SB
100n
VCP
Optional use lower
voltage down to 6V
2R2
470n
DAC Reference
AIN_IREF
IREF
Use low inductivity SMD
type, e.g. 1206, 0.5W
Status out
(open drain)
Configuration
interface
with TRISTATE
detection
CFG0
CFG1
CFG3
CFG2
DIAG0
DIAG1
TRISTATE configuration
(GND, VCC_IO or open)
Index pulse
Driver error
CFG4
CFG5
DRV_ENN_CFG6
Opt. driver
enable input
GNDD
B.Dwersteg, ©
TRINAMIC 2014
SD_MODE
SPI_MODE
leave open
Figure 26.1 Standalone operation with TMC5130A (pins shown with their standalone mode names)
To activate standalone mode, tie pin SPI_MODE to GND. Pin SD_MODE can be left open (high) in this
constellation. In this mode, the driver acts as a pure STEP and DIR driver. SPI and single wire are off.
The driver works in spreadCycle mode or stealthChop mode. With regard to the register set, the
following settings are activated:
GCONF settings:
GCONF.diag0_error = 1: DIAG0 works in open drain mode and signals driver error.
GCONF.diag1_index = 1: DIAG1 works in open drain mode and signals microstep table index position.
The following settings are affected by the CFG pins in order to ensure correct configuration:
CFG0: SETS CHOPPER OFF TIME (DURATION OF SLOW DECAY PHASE)
CFG0
TOFF Setting
Registers
GND
140 T
CLK
(recommended, most universal choice)
TOFF=4
VCC_IO
236 T
CLK
TOFF=7
open
332 T
CLK
TOFF=10