ST7DALIF2 datasheet(14/171 Pages) STMICROELECTRONICS

14 / 171 page

Pin description

ST7DALIF2

14/171

Legend / Abbreviations for Table 2:

Type:

I = input, O = output, S = supply

In/Output level:

CT= CMOS 0.3VDD/0.7VDD with input trigger

Output level:

HS = 20mA high sink (on N-buffer only)

Port and control configuration:

●

Input:

float = floating, wpu = weak pull-up, int = interrupt, ana = analog

●

Output:

OD = open drain, PP = push-pull

The RESET configuration of each pin is shown in bold which is valid as long as the device is

in reset state.

Table 2.

Device pin description

no.

Pin name

Level

Port / control

Main

function

(after

reset)

Alternate function

Input

Output

1VSS

Ground

2VDD

Main power supply

RESET

I/O CT

Top priority non maskable interrupt (active low)

PB0/AIN0/SS

I/O

ei3

Port B0

ADC Analog Input 0 or SPI Slave

Select (active low)

Caution: No negative current injection

allowed on this pin. For details, refer to

Section 20.2 on page 128

PB1/AIN1/SCK

I/O

Port B1

ADC Analog Input 1 or SPI Serial

Clock

Caution: No negative current injection

allowed on this pin. For details, refer to

Section 20.2 on page 128

PB2/AIN2/MISO

I/O

Port B2

ADC Analog Input 2 or SPI Master In/

Slave Out Data

PB3/AIN3/MOSI

I/O

ei2

Port B3

ADC Analog Input 3 or SPI Master Out

/ Slave In Data

PB4/AIN4/CLKIN

I/O

Port B4

ADC Analog Input 4 or External clock

input

PB5/AIN5

I/O

Port B5

ADC Analog Input 5

10 PB6/AIN6/DALIIN

I/O

Port B6

ADC Analog Input 6 or DALI Input

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