STMicroelectronics Fully integrated stepper motor driver mounting the L6470 EVAL6470H EVAL6470H Data Sheet
Product codes
EVAL6470H
EVAL6470H
Board description
Doc ID 022736 Rev 2
3/11
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
External switch input
TP1 (VS)
Test point
Motor supply voltage test point
TP4 (VDD)
Test point
Logic interface supply voltage test point
TP5 (VREG)
Test point
Logic supply voltage/L6470 internal regulator test point
TP6 (GND)
Test point
Ground test point
TP2 (STCK)
Test point
Step clock input test point
TP3 (STBY/RES)
Test point
Standby/reset input test point
TP7 (FLAG)
Test point
FLAG output test point
TP8 (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 L6470 SDO
output through daisy-chain termination jumper JP2)
output through 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
Table 4.
Slave SPI connector pinout (J11)
Pin number
Type
Description
1
Open drain output
L6470 BUSY/SYNC output
2
Open drain output
L6470 FLAG output