TMC246/A ETC2 [List of Unclassifed Manufacturers], TMC246/A Datasheet - Page 5

• Manufacturer Part Number: TMC246/A
• Description: High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnosis and SPI Interface
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

TMC246 DATA SHEET (V2.01 / Sep. 14th, 2005)
Application Circuit / Block Diagram
Pin Functions
Pin
VS
VCC
AGND
INA
SCK
SDI
ENN
ANN
BL1, BL2
OA1, OA2
VSA, VSB
Copyright © 2005, TRINAMIC Motion Control GmbH & Co KG
[MDBN]
[ERR]
[PHA]
[PHB]
1nF
stand alone mode
100nF
OSC
SDO
VCC
SCK
CSN
ENN
SDI
TMC246
Function
Motor supply voltage
3.0-5.5V supply voltage for analog
and logic circuits
Analog ground (Reference for SRA,
SRB, OSC, SLP, INA, INB, SLP)
Analog current control phase A
Clock input of serial interface
Data input of serial interface
Device enable (low active), and
overvoltage shutdown input
Enable analog current control via
INA and INB (low active)
Digital blank time select
Output of full-bridge A
Supply voltage for bridge A/B
SPE
perature
voltage
Under-
Tem-
OSC
[MDAN]
ANN
VCC/2
REFSEL
AGND
BL1
Pin
VT
GND
OSC
INB
SDO
CSN
SPE
SLP
SRA, SRB Bridge A/B current sense resistor input
OB1, OB2
BRA, BRB Bridge A/B sense resistor
BL2
GND
DAC
DAC
VS
SLP
R
SLP
Function
Short to GND detection comparator –
connect to VS if not used
Digital / Power ground
Oscillator capacitor or external clock
input for chopper
Analog current control input phase B
Data output of serial interface (tri-
state)
Chip select input of serial interface
Enable SPI mode (high active). Tie to
GND for non-SPI applications
Slope control resistor.
Output of full-bridge B
4
4
P
N
N
P
0
1
REFSEL
VREF
1
0
P
N
N
P
220nF
[...]: function in stand alone mode
VT
VSA
OA1
OA2
BRA
SRA
INA
INB
SRB
BRB
OB1
OB2
VSB
R
R
S
S
Coil A
Coil B
100µF
+V
M
R
SH
5