L6472 STMICROELECTRONICS [STMicroelectronics], L6472 Datasheet - Page 17

• Manufacturer Part Number: L6472
• Description: dSPIN fully integrated microstepping motor driver
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

L6472
4.1
Table 6.
No.
17
10
11
26
12
16
27
13
28
14
15
21
22
18
20
19
23
24
6
7
8
5
2
1
9
4
BUSY\SYNC
OSCOUT
Pin list
Pin description
OUT1A
OUT2A
OUT1B
OUT2B
OSCIN
ADCIN
PGND
DGND
VREG
AGND
Name
Vboot
FLAG
SDO
VDD
VSA
VSB
SW
SDI
CP
CK
CS
Open drain output
Open drain output
Supply voltage
Analog output
Power supply
Power supply
Power output
Power output
Power output
Power output
Analog input
Analog input
Logical input
Logic output
Logic input
Logic input
Logic input
Ground
Ground
Ground
Output
Power
Power
Type
Doc ID 022729 Rev 1
Logic output supply voltage (pull-up reference)
Internal 3 V voltage regulator output and 3.3 V external logic
supply
Oscillator pin 1. To connect an external oscillator or clock source.
If this pin is unused, it should be left floating.
Oscillator pin 2. To connect an external oscillator. 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.
Charge pump oscillator output
Bootstrap voltage needed for driving the high-side power DMOS of
both bridges (A and B)
Internal analog-to-digital converter input
Full bridge A power supply pin. It must be connected to VSB
Full bridge B power supply pin. It must be connected to VSA
Power ground pin
Full bridge A output 1
Full bridge A output 2
Full bridge B output 1
Full bridge B output 2
Analog ground.
External switch input pin. If not used the pin should be connected
to VDD.
Digital ground
By default, this BUSY pin is forced low when the device is
performing a command. Otherwise the pin can be configured to
generate a synchronization signal.
Data output pin for serial interface
Data input pin for serial interface
Serial interface clock
Chip select input pin for serial interface
Status flag pin. An internal open drain transistor can pull the pin to
GND when a programmed alarm condition occurs (step loss,
OCD, thermal pre-warning or shutdown, UVLO, wrong command,
non-performable command)
Function
Pin connection
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