TMC249_1 datasheet(7/30 Pages) TRINAMIC

Part #	TMC249

Description	High current microstep stepper motor driver with stallGuard?? protection / diagnostics and SPI Interface

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Manufacturer	TRINAMIC [TRINAMIC Motion Control GmbH & Co. KG.]

Direct Link	http://www.trinamic.com

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7 / 30 page

TMC249 / TMC249A DATA SHEET (V2.09 / 2009-Jul-30)

7

Application Circuit / Block Diagram

R

S

R

SH

Coil A

+V

M

R

S

Coil B

100µF

220nF

N

P

TMC249

HA1

HA2

LA2

LA1

LB1

LB2

HB2

HB1

SRB

SRA

VT

VS

4

DAC

4

DAC

INA

INB

VREF

REFSEL

ANN

SPE

1

0

1

SLP

R

SLP

OSC

REFSEL

GND

AGND

Under-

voltage

Tem-

perature

OSC

VCC

1nF

100nF

SCK

SDI

SDO

CSN

BL2

BL1

[MDBN]

[PHA]

[ERR]

[PHB]

stand alone mode

[MDAN]

[...]: function in stand alone mode

ENN

VCC/2

Pin Functions

Function

VS

Motor supply voltage

VT

Short to GND detection comparator

–

connect to VS if not used

VCC

3.0-5.5V supply voltage for analog

and logic circuits

GND

Digital / Power ground

AGND

Analog ground (Reference for SRA,

SRB, OSC, SLP, INA, INB, SLP)

OSC

Oscillator capacitor or external clock

input for chopper

INA

Analog current control phase A

INB

Analog current control input phase B

SCK

Clock input of serial interface

SDO

Data output of serial interface (tri-state)

SDI

Data input of serial interface

CSN

Chip select input of serial interface

ENN

Device enable (low active), and

overvoltage shutdown input

SPE

Enable SPI mode (high active). Tie to

GND for non-SPI applications

ANN

Enable analog current control via

INA and INB (low active)

SLP

Slope control resistor. Tie to GND for

fastest slope

BL1, BL2

Digital blank time select

SRA, SRB

Bridge A/B current sense resistor input

HA1, HA2,

HB1, HB2

Outputs for high side P-channel

transistors

LA1, LA2,

LB1, LB2

Outputs

for

low

side

N-channel

transistors

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TMC249 Datasheet(PDF) 7 Page - TRINAMIC Motion Control GmbH & Co. KG.

TMC249 Datasheet(HTML) 7 Page - TRINAMIC Motion Control GmbH & Co. KG.

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