EVAL6470H Datasheet, PDF (8/70 Pages) STMicroelectronics – dSPIN fully integrated microstepping motor driver with motion engine and SPI

Block diagram
1
Block diagram
Figure 1. Block diagram
L6470
STBY/RST
FLAG
VDD
OSCIN OSCOUT ADCIN
16MHz
Oscillator
Ext. Osc. driver
&
Clock gen.
ADC
VREG
CP
VBOOT
3V
Voltage Reg.
Charge
pump
V boot
HS A1
V DD
CS
CK
SDO
SDI
BUSY/SYNC
STCK
V DD
SW
DGND
Control
Logic
HS A1
LS A1
HS A2
LS A2
HS B1
LS B1
HS B2
LS B2
LS A1
V boot
HS B1
Temperature
sensing
Current DACs
&
Comparators
LS B1
Current
sensing
V boot
HS A2
LS A2
V boot
HS B2
LS B2
VSA
VSA
OUT1A
OUT2A
PGND
VSB
VSB
OUT1B
OUT2B
PGND
AGND
AM02377v1
8/70
Doc ID16737 Rev 5