Datasheet
TMC220X, TMC222X DATASHEET (Rev. 1.02 / 2017-MAY-16) 10
www.trinamic.com
Pin
Number
Type
Function
GND
6, 19
GND. Connect to GND plane near pin.
CPO
7
Charge pump capacitor output.
CPI
8
Charge pump capacitor input. Tie to CPO using 22nF 50V capacitor.
VCP
9
Charge pump voltage. Tie to VS using 100nF capacitor.
5VOUT
10
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
11
DI (pd)
Microstep resolution configuration (internal pull down resistors)
MS2, MS1: 00: 1/8, 01: 1/2, 10: 1/4 11: 1/16
MS2
12
DI (pd)
DIAG
13
DO
Diagnostic output. Hi level upon driver error. Reset by ENN=high.
CLK
14
DI
CLK input. Tie to GND using short wire for internal clock or supply
external clock.
PDN_UART
15
DIO
Power down not control input (low = automatic standstill current
reduction).
Optional UART Input/Output. Power down function can be disabled
in UART mode.
VCC_IO
16
3.3V to 5V IO supply voltage for all digital pins.
STEP
17
DI
STEP input
VREF
18
AI
Analog reference voltage for current scaling or reference current for
use of internal sense resistors (optional mode)
DIR
20
DI (pd)
DIR input (internal pull down resistor)
OA2
24
Motor coil A output 2
BRA
25
Sense resistor connection for coil A. Place sense resistor to GND near
pin. Tie to GND when using internal sense resistor.
OA1
27
Motor coil A output 1
OB1
30
Motor coil B output 1
BRB
32
Sense resistor connection for coil B. Place sense resistor to GND near
pin. Tie to GND when using internal sense resistor.
Exposed
die pad
-
Connect the exposed die pad to a GND plane. Provide as many as
possible vias for heat transfer to GND plane. Serves as GND pin for
power drivers and analogue circuitry.
2.5 Package Outline TMC2224
MS2
INDEX
GND
CPO
VS
-
DIR
OB2
BRB
OA1
OB1
TEST
GND
5VOUT
VCC_IO
PDN_UART
DIAG
CPI
VCP
VS
BRA
OA2
ENN
STEP
CLK
MS1
SPREAD
VREF
1 2 3 4 5 6 7
21201918171615
22232425262728
141312111098
TMC2224
QFN28
Pad=GND
© B. Dwersteg,
TRINAMIC
Figure 2.3 TMC2224 Pinning Top View – type: QFN28, 5x5mm², 0.5mm pitch