STMicroelectronics Fully integrated stepper motor driver mounting the L6470 in a high power PowerSO package EVAL6470PD EVAL6470PD Data Sheet
Product codes
EVAL6470PD
EVAL6470PD
Board description
Doc ID 022606 Rev 2
3/12
Table 2.
Jumper and connector 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
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
L6470 BUSY/SYNC output
2
Open drain output
L6470 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 the L6470 SDO
output through the daisy-chain termination jumper JP2)
output through the daisy-chain termination jumper JP2)
6
Digital input
SPI serial clock signal (connected to L6470 CK input)
7
Digital input
SPI master OUT slave IN signal (connected to L6470 SDI
input)
input)
8
Digital input
SPI slave select signal (connected to L6470 CS input)
9
Digital input
L6470 step-clock input
10
Digital input
L6470 STBY/RST input