STMicroelectronics Fully integrated stepper motor driver based on the L6472 EVAL6472H EVAL6472H Data Sheet
Product codes
EVAL6472H
EVAL6472H
Board description
Doc ID 022980 Rev 1
3/11
Table 2.
Jumpers and connectors description
Name
Type
Function
M1
Power supply
Motor supply voltage
M2
Power output
Bridge A outputs
M3
Power output
Bridge B outputs
CN1
SPI connector
Master SPI
CN2
SPI connector
Slave SPI
CN3
NM connector
OSCIN and OSCOUT pins
CN4
NM connector
External switch input
TP1 (VS)
Test point
Motor supply voltage test point
TP2 (VDD)
Test point
Logic interface supply voltage test point
TP3 (VREG)
Test point
Logic supply voltage/L6470 internal regulator test
point
point
TP5 (GND)
Test point
Ground test point
TP6 (GND)
Test point
Ground test point
TP8 (STCK)
Test point
Step clock input test point
TP9 (STBY/RES)
Test point
Standby/reset input test point
TP10 (FLAG)
Test point
FLAG output test point
TP11
(BUSY/SYNC)
Test point
BUSY/SYNC output test point
Table 3.
Master SPI connector pinout (J10)
Pin
number
Type
Description
1
Open drain output
L6472 BUSY output
2
Open drain output
L6472 FLAG output
3
Ground
Ground
4
Supply
EXT_VDD (can be used as external logic power supply)
5
Digital output
SPI master IN slave OUT signal (connected to L6472 SDO
output through daisy chain termination jumper JP2)
output through daisy chain termination jumper JP2)
6
Digital input
SPI serial clock signal (connected to L6472 CK input)
7
Digital input
SPI master OUT slave IN signal (connected to L6472 SDI
input)
input)
8
Digital input
SPI slave select signal (connected to L6472 CS input)
9
Digital input
L6472 step-clock input
10
Digital input
L6472 standby/reset input