ST7263BDx datasheet(17/186 Pages) STMICROELECTRONICS

17 / 186 page

ST7263Bxx

Pin description

Doc ID 7516 Rev 8

17/186

Legend / Abbreviations for Table 3 and Table 4:

Type: I = input, O = output, S = supply

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

Output level: 10 mA = 10mA high sink (Fn N-buffer only)

25 mA = 25 mA 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

The RESET configuration of each pin is shown in bold. This configuration is kept as long as

the device is under reset state.

Table 3.

Device pin description (QFN40, LQFP48, SO34 and SDIP32)

Pin n°

Pin name

Level

Port /control

Main

function

(after

reset)

Alternate function

Input

Output

1176

VDD

Power supply voltage (4- 5.5 V)

2287

OSCOUT

Oscillator output

3398

OSCIN

Oscillator input

VSS

Digital ground

11 10 PC2/USBOE

I/O

Port C2

USB output Enable

12 13 PC1/TDO

I/O

Port C1

SCI Transmit Data

output

13 14 PC0/RDI

I/O

Port C0

SCI Receive Data

input

14 15 RESET

I/O

Reset

15 16 NC

Not connected

16 17 NC

Not connected

18 NC

Not connected

19 NC

Not connected

20 NC

Not connected

21 NC

Not connected

22 NC

Not connected

10 17 23 PB7/AIN7/IT8

I/O

CT 10mA X

Port B7

ADC analog input 7

10 11 18 24 PB6/AIN6/IT7

I/O

CT 10mA X

Port B6

ADC analog input 6

11 12 19 25 VPP/TEST

Programming supply

12 13 20 26 PB5/AIN5/IT6

I/O

CT 10mA X

Port B5

ADC analog input 5

13 14 21 27 PB4/AIN4/IT5

I/O

CT 10mA X

Port B4

ADC analog input 4

14 15 22 28 PB3/AIN3

I/O

CT 10mA X

Port B3

ADC analog input 3

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