EVAL6474H Datasheet, PDF (3/10 Pages) STMicroelectronics – Stepper motor driver mounting the L6474

EVAL6474H
Board description
Table 2. Jumpers and connectors description
Name
Type
Function
J1
Power supply
Motor supply voltage
J5
Power output
Bridge A outputs
J6
Power output
Bridge B outputs
J2
SPI connector
Master SPI
J3
SPI connector
Slave SPI
J4
NM connector
OSCIN and OSCOUT pins
J7
NM connector
SYNC output
TP1 (VS)
Test point
Motor supply voltage test point
TP4 (VDD)
TP5 (VREG)
Test point
Test point
Logic interface supply voltage test point
Logic supply voltage/L6474 internal regulator test
point
TP6 (GND)
TP2 (STCK)
Test point
Test point
Ground test point
Step clock input test point
TP8 (DIR)
Test point
DIR output test point
TP3 (STBY/RES)
Test point
STBY/RES input test point
TP7 (FLAG)
Test point
FLAG output test point
Table 3.
Pin
number
1
2
3
4
5
6
7
8
9
10
Slave SPI connector pinout (J11)
Type
Description
Digital input
Open drain output
Ground
Supply
Digital output
Digital input
Digital input
Digital input
Digital input
Digital input
L6474 direction input
L6474 FLAG output
Ground
EXT_VDD (can be used as external logic power supply)
SPI master IN slave OUT signal (connected to the L6474 SDO
output through daisy chain termination jumper JP2)
SPI serial clock signal (connected to L6474 CK input)
SPI master OUT slave IN signal (connected to the L6474 SDI
input)
SPI slave select signal (connected to the L6474 CS input)
L6474 step-clock input
L6474 standby/reset input
Doc ID 022766 Rev 1
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