Datasheet
TMC2300 DATASHEET (Rev. 1.02 / 2019-NOV-06) 9
www.trinamic.com
2 Pin Assignments
The TMC2300 comes in a tiny package in order to fit miniaturized devices. For the ease of use, pinning
is shown separately for both function-modes.
2.1 Package Outline TMC2300
© B. Dwersteg,
TRINAMIC
DIR
OB2
BRB
OA1
OB1
1.8VOUT
MODE
VS
BRA
OA2
EN
STEP
STEPPER
MS1_AD0
PDN_UART
TMC2300
(UART Stepper)
VIO/NSTDBY
VCP GND
1 2 3 4 5
109876
1514131211
1617181920
© B. Dwersteg,
TRINAMIC
OB2
1.8VOUT
TMC2300
(Standalone
Stepper)
VIO/NSTDBY
VCP GND
1 2 3 4 5
109876
1514131211
1617181920
STEPPER
EN
MODE
PDN
BRB
OA1
OB1
VS
BRA
DIR
OA2
STEP
MS1
DIAG DIAG
MS2_AD1
MS2
PADPAD
Figure 2.1 TMC2300 Pinning Top View Stepper Driver – QFN20, 3x3mm², 0.4mm pitch
2.2 Signal Descriptions / Stepper modes
Pin
Number
Type
Function
OA2
1
Motor coil A output 2
VCP
2
Charge pump voltage. Optionally tie to VS using 1nF to 100nF
capacitor. May be left unconnected.
DIR
3
DI
DIR input
(Analog test output in factory test mode)
STEP
4
DI
STEP input
MS1_AD0
5
DI
Microstep resolution configuration
MS2, MS1: 00: 1/8, 01: 1/32, 10: 1/64, 11: 1/16
For UART based configuration selection of UART Address 0…3
(AD0=LSB, AD1=MSB)
MS2_AD1
6
DI
EN
7
DI
Enable input. The power stage becomes switched off (all motor
outputs floating) when this pin becomes driven to a low level.
Also used to clear error flags.
STEPPER
8
DI
Mode selection input.
STEPPER, MODE:
00: do not use
01: do not use
10: Stepper
11: Standalone Stepper
(CLK, TST input in factory test mode)
MODE
9
DI
PDN_UART
10
DIO
UART Input/Output.
In standalone mode: Inverted power-down control input (low =
automatic standstill current reduction).
VIO/NSTDBY
11
1.8V to 5V IO supply voltage for all digital pins. IC goes to standby
mode and resets, when this pin is pulled to GND.
DIAG
12
DO
Diagnostic output. High level upon driver error or stall. Reset by
EN=low.