ST7F10BF0B3TR datasheet(7/159 Pages) STMICROELECTRONICS

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ST7LITE1xB

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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

Pin No.

Pin Name

Level

Port / Control

Main

Function

(after

reset)

Alternate Function

Input

Output

1191

VSS

Ground

2202

VDD

Main power supply

RESET

I/O CT

Top priority non maskable interrupt (active low)

PB0/COMPIN+/

AIN0/SS

I/O

ei3

Port B0

ADC Analog Input 0 2) or SPI Slave

Select (active low) or Analog Com-

parator Input

Caution: No negative current in-

jection allowed on this pin.

PB1/AIN1/SCK

I/O

Port B1

ADC Analog Input 1 2) or SPI Serial

Clock

PB2/AIN2/MISO

I/O

Port B2

ADC Analog Input 2 2) or SPI Mas-

ter In/ Slave Out Data

PB3/AIN3/MOSI

I/O

ei2

Port B3

ADC Analog Input 3 2) or SPI Mas-

ter Out / Slave In Data

PB4/AIN4/CLKIN/

COMPIN-

I/O

Port B4

ADC Analog Input 4 2) or External

clock input or Analog Comparator

External Reference Input

PB5/AIN5

I/O

Port B5

ADC Analog Input 5 2)

PB6/AIN6

I/O

Port B6

ADC Analog Input 6 2)

PA7/COMPOUT

I/O CT HS X

ei1

Port A7

Analog Comparator Output

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