Datasheet

TMC262 / TMC262C DATASHEET (Rev. 2.22 / 2019-FEB-22) 7
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Pin
Number
Type
Function
5VOUT
9
Output of internal 5V linear regulator. This voltage is used to
supply the low-side drivers and internal analog circuitry. An
external capacitor to GND close to the pin is required. Place the
capacitor near to pin 9 and connect the other side to the GND
plane. 470nF ceramic is sufficient for most applications; an
additional low-ESR capacitor (10µF or more) improves performance
with high gate charge MOSFETs.
SDO
10
DO VIO
Data output of SPI interface (Tristate)
SDI
11
DI VIO
Data input of SPI interface
(Scan test input in test mode)
SCK
12
DI VIO
Serial clock input of SPI interface
(Scan test shift enable input in test mode)
CSN
14
DI VIO
Chip select input of SPI interface
ENN
15
DI VIO
Enable not input for drivers. Switches off all MOSFETs.
CLK
16
DI VIO
Clock input for all internal operations. Tie low to use internal
oscillator. The first high signal disables the internal oscillator until
power down.
VHS
24
High side supply voltage (motor supply voltage VS - 10V)
VS
25
Motor supply voltage
TST_ANA
26
AO VIO
Analog mode test output. Leave open for normal operation.
SG_TST
27
DO VIO
StallGuard2™ output. Signals motor stall (high active).
VCC_IO
29
Input / output supply voltage VIO for all digital pins. Tie to digital
logic supply voltage. Allows operation in 3.3V and 5V systems.
DIR
30
DI VIO
Direction input. Is sampled upon detection of a step to determine
stepping direction. An internal glitch filter for 60ns is provided.
STEP
31
DI VIO
Step input. An internal glitch filter for 60ns is provided.
TST_MODE
32
DI VIO
Test mode input. Puts IC into test mode. Tie to GND for normal
operation using a short wire to GND plane.