ST7LITE3 datasheet(6/167 Pages) STMICROELECTRONICS

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ST7LITE3

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PIN DESCRIPTION (Cont’d)

Legend / Abbreviations for Table 1:

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 1. Device Pin Description

No.

Pin Name

Level

Port / Control

Main

Function

(after

reset)

Alternate Function

Input

Output

VSS

Ground

VDD

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 13.2.2 on page 130

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 13.2.2 on page 130

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

ei2

Port B5

ADC Analog Input 5

10 PB6/AIN6/RDI

I/O

Port B6

ADC Analog Input 6 or LINSCI Input

11 PA7/TDO

I/O CT HS

Port A7

LINSCI Output

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