Datasheet
TMC223 DATASHEET (V. 1.00 / May 3rd, 2007) 7
Copyright © 2007 TRINAMIC Motion Control GmbH & Co. KG
2.7 Pin and Signal Descriptions
OA1
OA1
VBAT
VBAT
VBAT
SDA
OA2
GND
GND
open
GND
TST
CPN
CPP
VCP
VBAT
VBAT
VBAT
OB2
OB2
NC
Top view
SWI
NC
HW
VDD
SCL
GND
OB1
OB1
OA2
GND
GND
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24
1 2 3 4 5 6 7 8
TMC 223
QFN32
TMC223
HW
TST
SWI
CPN
GND
open
GND
SCL
SDA
VDD
OA2
OB1
3
4
5
6
7
8
9
10
15
16
17
20
14
1
2
11
12
13
18
OB2
19
VBAT
GND
GND
CPP
OA1
VBAT
VCP
TRINAMIC
Name SOIC20 QFN32 Description
SDA 1 8 SDA Serial Data input/output
SCL 2 9 SCL Serial Clock input
VDD 3 10 internal supply (needs external decoupling capacitor)
GND 4,7,14,17 11,14,25,26,
31,32
ground, heat sink
TST 5 12 test pin (to be tied to ground in normal operation)
open 6 13 must be left open
HW 8 15 hard-wired serial interface address bit input
CPN 9 17 negative connection of external charge pump capacitor
CPP 10 18 positive connection of external charge pump capacitor
VCP 11 19 connection of external charge pump filter capacitor
VBAT 12, 19 3-5,20-22 battery voltage supply
OB2 13 23,24 negative end of phase B coil
OB1 15 27,28 positive end of phase B coil
OA2 16 29,30 negative end of phase A coil
OA1 18 1,2 positive end of phase A coil
SWI 20 6 reference switch input
NC 7,16 internally not connected (shields when connected to ground)
Table 1: TMC223 Signal Description