ST72F262G2B5 datasheet(8/172 Pages) STMICROELECTRONICS

Part #	ST72F262G2B5

Description	8-BIT MCU WITH FLASH OR ROM MEMORY, ADC, TWO 16-BIT TIMERS, I2C, SPI, SCI INTERFACES

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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ST72260Gx, ST72262Gx, ST72264Gx

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PIN DESCRIPTION (Cont’d)

For external pin connection guidelines, refer to Section 13 "ELECTRICAL CHARACTERISTICS" on page

126.

Legend / Abbreviations for Table 1:

Type:

I = input, O = output, S = supply

Input level:

A = Dedicated analog input

In/Output level: CT= CMOS 0.3 VDD/0.7 VDD with input trigger

Output level:

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

Port and control configuration:

– Input:

float = floating, wpu = weak pull-up, int = interrupt 1), ana = analog

– Output:

OD = open drain 2), PP = push-pull

Refer to Section 9 "I/O PORTS" on page 38 for more details on the software configuration of the I/O ports.

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

in reset state.

Table 1. Device Pin Description

Pin n°

Pin Name

Level

Port / Control

Main

Function

(after

reset)

Alternate Function

Input

Output

1

A3 RESET

I/O CT

XX

Top priority non maskable interrupt (ac-

tive low)

2

C4 OSC1 3)

I

External clock input or Resonator oscilla-

tor inverter input or resistor input for RC

oscillator

3

B3 OSC2 3)

O

Resonator oscillator inverter output or ca-

pacitor input for RC oscillator

4

A2 PB7/SS

I/O

CT

X

ei1

X

Port B7

SPI Slave Select (active low)

5

A1 PB6/SCK

I/O

CT

X

ei1

X

Port B6

SPI Serial Clock

6

B1 PB5/MISO

I/O

CT

X

ei1

X

Port B5

SPI Master In/ Slave Out Data

7

B2 PB4/MOSI

I/O

CT

X

ei1

X

Port B4

SPI Master Out / Slave In Data

8

C1 NC

Not Connected

9

C2 NC

D1 NC

10

8

C3 PB3/OCMP2_A

I/O

CT

X

ei1

X

Port B3

Timer A Output Compare 2

11

9

D2 PB2/ICAP2_A

I/O

CT

X

ei1

X

Port B2

Timer A Input Capture 2

12

10 E1 PB1 /OCMP1_A

I/O

CT

X

ei1

X

Port B1

Timer A Output Compare 1

Caution: Negative current

injection not allowed on

this pin4).

13

11

F1 PB0 /ICAP1_A

I/O

CT

X

ei1

X

Port B0

Timer A Input Capture 1

Caution: Negative current

injection not allowed on

this pin4).

14

12

F2 PC5/EXTCLK_A/AIN5 I/O

CT

X

ei0/ei1

X

Port C5

Timer A Input Clock or ADC

Analog Input 5

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