Datasheet

TMC2100 DATASHEET (Rev. 1.07 / 2017-MAY-15) 7
www.trinamic.com
2.2 Signal Descriptions
Pin
QFN36
TQFP48
Type
Function
CLK
1
2
DI
CLK input. Tie to GND using short wire for internal clock or
supply external clock.
CFG3
2
3
DI
Configuration input
CFG2
3
4
DI
Configuration input
CFG1
4
5
DI
Configuration input
CFG0
5
7
DI
Configuration input
STEP
6
8
DI
STEP input
DIR
7
9
DI
DIR input
VCC_IO
8
10
3.3 V to 5 V IO supply voltage for all digital pins.
DNC
9, 17
11, 14, 16,
18, 20, 22,
23, 28, 41,
43, 45, 47
Do not connect. Leave open!
GNDD
10
12
Digital GND. Connect to GND.
N.C.
11
6, 31, 36
Unused pin, connect to GND for compatibility to future versions.
GNDP
12, 35
13, 48
Power GND. Connect to GND plane near pin.
OB1
13
15
Motor coil B output 1
BRB
14
17
Sense resistor connection for coil B. Place sense resistor to GND
near pin. Tie to GND when using internal sense resistors.
OB2
15
19
Motor coil B output 2
VS
16, 31
21, 40
Motor supply voltage. Provide filtering capacity near pin with
short loop to nearest GNDP pin (respectively via GND plane).
CFG4
18
24
DI
Configuration input
CFG5
19
25
DI
Configuration input
ERROR
20
26
DO
Diagnostic open drain output: driver error
INDEX
21
27
DO
Diagnostic open drain output: microstep table position index
CFG6_ENN
22
29
DI
Enable input (high to disable) and power down configuration
AIN_IREF
23
30
AI
Analog reference voltage for current scaling or reference current
for use of internal sense resistors (optional mode)
GNDA
24
32
Analog GND. Tie to GND plane.
5VOUT
25
33
Output of internal 5 V regulator. Attach 2.2 µF to 10µF ceramic
capacitor to GNDA near to pin for best performance.
VCC
26
34
5V supply input for digital circuitry within chip and charge
pump. Attach 470nF capacitor to GND (GND plane). May be
supplied by 5VOUT. A 2.2 or 3.3 Ohm resistor is recommended
for decoupling noise from 5VOUT. When using an external
supply, make sure, that VCC comes up before or in parallel to
5VOUT or VCC_IO, whichever comes up later!
CPO
27
35
Charge pump capacitor output.
CPI
28
37
Charge pump capacitor input. Tie to CPO using 22 nF 50 V
capacitor.
VCP
29
38
Charge pump voltage. Tie to VS using 100 nF 16 V capacitor.
VSA
30
39
Analog supply voltage for 5V regulator. Normally tied to VS.
Provide a 100 nF filtering capacitor.
OA2
32
42
Motor coil A output 2
BRA
33
44
Sense resistor connection for coil A. Place sense resistor to GND
near pin. Tie to GND when using internal sense resistors.
OA1
34
46
Motor coil A output 1
TST_MODE
36
1
DI
Test mode input. Tie to GND using short wire.
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 digital circuitry.