Datasheet
TMC4361A Datasheet | Document Revision 1.22 • 2017-JAN-12
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Read entire documentation; especially the “Supplemental Directives” on page 224.
MAIN MANUAL
Pin Description
Pin Names and Descriptions
Pin
Number
Type
Function
Supply Pins
GND
6, 15,
25, 36
GND
Digital ground pin for IOs and digital circuitry.
VCC
5, 26, 37
VCC
Digital power supply for IOs and digital circuitry (3.3V… 5V).
VDD1V8
16, 35
VDD
Connection of internal generated core voltage of 1.8V.
CLK_EXT
38
I
Clock input to provide a clock with the frequency fCLK for all
internal operations.
NRST
39
I (PU)
Low active reset. If not connected, Power-on-Reset and internal
pull-up resistor is active.
TEST_MODE
34
I
Test mode input. Tie to low for normal operation.
NFREEZE
19
I (PU)
Low active safety pin to immediately freeze output operations.
If not connected, internal pull-up resistor is active.
Interface Pins for µC
NSCSIN
2
I
Low active chip selects input of SPI interface to µC.
SCKIN
3
I
Serial clock for SPI interface to µC.
SDIIN
4
I
Serial data input of SPI interface to µC.
SDOIN
7
O
Serial data output of SPI interface to µC (Z if NSCSIN=1).
INTR
33
O
Interrupt output, programmable PD/PU for wired-and/or.
TARGET_REACHED
31
O
Target reached output, programmable PD/PU for wired-and/or.
Reference Pins
STOPL
12
I (PD)
Left stop switch. External signal to stop a ramp.
If not connected, internal pull-down resistor is active.
HOME_REF
13
I (PD)
Home reference signal input. External signal for reference search.
If not connected, internal pull-down resistor is active.
STOPR
14
I (PD)
Right stop switch. External signal to stop a ramp.
If not connected, internal pull-down resistor is active.
STPIN
17
I (PD)
Step input for external step control.
If not connected, internal pull-down resistor is active.
DIRIN
18
I (PD)
Direction input for external step control.
If not connected, internal pull-down resistor is active.
START
20
IO
Start signal input/output. Default: Output
S/D Output Pins
STPOUT
PWMA
DACA
24
O
Step output.
First PWM signal (Sine).
First DAC output signal (Sine).
DIROUT
PWMB
DACB
23
O
Direction output.
Second PWM signal (Cosine).
Second DAC output signal (Cosine).
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