EVAL6470H Datasheet, PDF (17/70 Pages) STMicroelectronics – dSPIN fully integrated microstepping motor driver with motion engine and SPI

L6470
Pin connection
4.1
Pin list
Table 6. Pin description
No.
HTSSOP POWERSO
Name
Type
Function
17
24
VDD Power
Logic outputs supply voltage (pull-up reference)
6
9
VREG Power
Internal 3 V voltage regulator output and 3.3 V
external logic supply
Oscillator pin 1. To connect an external oscillator or
7
10
OSCIN Analog input
clock source. If this pin is unused, it should be left
floating.
Oscillator pin 2. To connect an external oscillator.
8
11
OSCOUT Analog output
When the internal oscillator is used this pin can
supply 2/4/8/16 MHz. If this pin is unused, it should be
left floating.
10
13
CP
Output
Charge pump oscillator output
11
14
VBOOT Supply voltage
Bootstrap voltage needed for driving the high-side
power DMOS of both bridges (A and B)
5
8
ADCIN Analog input
Internal analog-to-digital converter input
2, 26 4, 5, 33, 34
VSA
Power supply
Full-bridge A power supply pin. It must be connected
to VSB.
12, 16 15, 16, 22, 23
VSB
Power supply
Full-bridge B power supply pin. It must be connected
to VSA.
27, 13
1, 19
PGND Ground
Power ground pin
1
2, 3
OUT1A Power output
Full-bridge A output 1
28
35, 36
OUT2A Power output
Full-bridge A output 2
14
17, 18
OUT1B Power output
Full-bridge B output 1
15
20, 21
OUT2B Power output
Full-bridge B output 2
9
12
AGND Ground
Analog ground.
4
7
SW
Logical input
External switch input pin. If not used the pin should be
connected to VDD.
21
28
DGND Ground
Digital ground
By default, this BUSY pin is forced low when the
22
29
BUSY\SYNC
Open drain output
device is performing a command. Otherwise the pin
can be configured to generate a synchronization
signal.
18
25
SDO Logic output
Data output pin for serial interface
20
27
19
26
SDI
Logic input
CK
Logic input
Data input pin for serial interface
Serial interface clock
23
30
CS
Logic input
Chip select input pin for serial interface
Doc ID16737 Rev 5
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