Datasheet

TMC2209 DATASHEET (Rev. 1.03 / 2019-JUN-26) 9
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2 Pin Assignments
The TMC2209 comes in a compact QFN package.
2.1 Package Outline TMC2209
OB2
ENN
GND
CPO
SPREAD
OB1 BRA
CLK
INDEX
MS2_AD1
DIAG
STEP
VREF
GND
DIR
STDBY
OA2
CPI
VCP
PDN_UART
MS1_AD0
5VOUT
OA1 - BRB VS VS
VCC_IO
1 2 3 4 5 6 7
21201918171615
22232425262728
141312111098
TMC2209
QFN28
Pad=GND
© B. Dwersteg,
TRINAMIC
Figure 2.1 TMC2209 Pinning Top View – type: QFN28, 5x5mm², 0.5mm pitch
2.2 Signal Descriptions TMC2209
Pin
Number
Type
Function
OB2
1
Motor coil B output 2
ENN
2
DI
Enable not input. The power stage becomes switched off (all motor
outputs floating) when this pin becomes driven to a high level.
GND
3, 18
GND. Connect to GND plane near pin.
CPO
4
Charge pump capacitor output.
CPI
5
Charge pump capacitor input. Tie to CPO using 22nF 50V capacitor.
VCP
6
Charge pump voltage. Tie to VS using 100nF capacitor.
SPREAD
7
DI (pd)
Chopper mode selection: Low=StealthChop, High=SpreadCycle
(may be left unconnected)
5VOUT
8
Output of internal 5V regulator. Attach 2.2µF to 4.7µF ceramic
capacitor to GND near to pin for best performance. Provide the
shortest possible loop to the GND pad.
MS1_AD0
9
DI (pd)
Microstep resolution configuration (internal pull-down resistors)
MS2, MS1: 00: 1/8, 01: 1/32, 10: 1/64 11: 1/16
For UART based configuration selection of UART Address 0…3
MS2_AD1
10
DI (pd)
DIAG
11
DO
Diagnostic and StallGuard output. Hi level upon stall detection or
driver error. Reset error condition by ENN=high.
INDEX
12
DO
Configurable index output. Provides index pulse.
CLK
13
DI
CLK input. Tie to GND using short wire for internal clock or supply
external clock.
PDN_UART
14
DIO
Power down not control input (low = automatic standstill current
reduction).
Optional UART Input/Output. Power down function can be disabled
in UART mode.