ST7263B datasheet(7/132 Pages) STMICROELECTRONICS

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ST7263B

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Note (*): if the peripheral is present on the device (see Table 1, "Device Summary")

Legend / Abbreviations for Figure 2 and Table 2:

Type:

I = input, O = output, S = supply

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

Output level:

10mA = 10mA high sink (on N-buffer only)

25mA = 25mA very 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, T = True open drain

Refer to “I/O PORTS” on page 25 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 kept as long as the device is

under reset state.

22 23 PA3/EXTCLK

I/O

Port A3

Timer External Clock

23 24 PA2/SCL/ICCCLK

I/O CT 25mA X

Port A2

I²C serial clock*, ICC Clock

25 NC

Not connected

24 26 NC

Not connected

25 27 NC

Not connected

26 28 PA1/SDA/ICCDATA

I/O CT 25mA X

Port A1

I²C serial data*, ICC Data

27 29 PA0/MCO

I/O

Port A0

Main Clock Output

28 30 VSSA

Analog ground

29 31 USBDP

I/O

USB bidirectional data (data +)

30 32 USBDM

I/O

USB bidirectional data (data -)

31 33 USBVCC

USB power supply

32 34 VDDA

Analog supply voltage

Pin n°

Pin Name

Level

Port / Control

Main

Function

(after reset)

Alternate Function

Input

Output

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