Datasheet

Pin connection L6474
16/52 Doc ID 022529 Rev 3
4.1 Pin list
Table 6. Pin description
N. Name Type Function
17 VDD Power Logic outputs supply voltage (pull-up reference)
6 VREG Power
Internal 3 V voltage regulator output and 3.3 V external logic
supply
7 OSCIN Analog input
Oscillator pin 1. To connect an external oscillator or clock source.
If this pin is unused, it should be left floating.
8 OSCOUT Analog output
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.
10 CP Output Charge pump oscillator output
11 VBOOT Supply voltage
Bootstrap voltage needed for driving the high-side power DMOS of
both bridges (A and B)
5 ADCIN Analog input Internal analog to digital converter input
2
VSA Power supply Full-bridge A power supply pin. It must be connected to VSB
26
12
VSB Power supply Full-bridge B power supply pin. It must be connected to VSA
16
27
PGND Ground Power ground pin
13
1 OUT1A Power output Full-bridge A output 1
28 OUT2A Power output Full-bridge A output 2
14 OUT1B Power output Full-bridge B output 1
15 OUT2B Power output Full-bridge B output 2
9 AGND Ground Analog ground
4 DIR Logical input Direction input
21 DGND Ground Digital ground
22 SYNC Open drain output Synchronization signal.
18 SDO Logic output Data output pin for serial interface
20 SDI Logic input Data input pin for serial interface
19 CK Logic input Serial interface clock
23 CS Logic input Chip select input pin for serial interface
24 FLAG Open drain output
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)
3 STBY\RST
Logic input
Standby and reset pin. LOW logic level resets the logic and puts
the device into standby mode. If not used, should be connected to
VDD