Datasheet

TMC220X, TMC222X DATASHEET (Rev. 1.02 / 2017-MAY-16) 13
www.trinamic.com
Pin
Number
Type
Function
STEP
22
DI (pd)
STEP input (internal pull down resistor)
N.C.
23
Unused pin, leave open or connect to GND for compatibility to future
versions.
CLK
24
DI
CLK input. Tie to GND using short wire for internal clock or supply
external clock.
MS1
25
DI (pd)
Microstep resolution configuration (internal pull down resistors)
MS2, MS1: 00: 1/4, 01: 1/8, 10: 1/16, 11: 1/32
MS2
26
DI (pd)
INDEX
27
DO
Configurable index output. Provides index pulse.
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.
2.9 Package Outline TMC2220
25
26
3724
CPO
OA1
-
- OA2 OA2
OB2
OB2 -
BRA
TEST
OB1
SPREAD
5VIN
-
DIR
STEP
VCC_IO
1
OB1
GND
VCC_IO
-
VS
VS
-
GND
VREF
CPI
VS
OA1
-
PDN_UART
ENN
-
5VOUT
2
3
4
5
6
7
8
9
10
11
14 15 16 17 18 19 20 21 22 23
36
35
34
33
32
31
30
29
28
27
48 47 46 45 44 43 42 41 40 39
-
38
GND
13
BRA
-
VS
Pad = GND
12
DIAG
INDEX
CLK
MS1
MS2
VCP
BRB BRB
TMC2220-TA
TQFP-48
9mm x 9mm
Figure 2.5 TMC2220 Pinning Top View – type: TQFP-EP 48, 9x9mm² over pins, 0.5mm pitch
2.10 Signal Descriptions TMC2220
Pin
Number
Type
Function
OB1
1, 2
Motor coil B output 1
VS
4, 5, 32,
33
Motor supply voltage. Provide filtering capacity near pin with
shortest possible loop to GND pad.
TEST
8
Connect to GND. May alternatively be left open.
GND
9, 14,
27
GND. Connect to GND plane near pin.
VCC_IO
10, 24
3.3V to 5V IO supply voltage for all digital pins.