ST7GEME4 datasheet(8/28 Pages) STMICROELECTRONICS

8 / 28 page

Pin description

ST7GEME4

8/28

Legend / Abbreviations

●

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

●

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

●

Output level: HS = 10mA 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

Table 2.

Pin description

Pin number

Pin name

Level

Port / Control

Main

function

(after reset)

Alternate function

Input

Output

CRDRST

CT X

Smartcard reset

CRDCLK

CT X

Smartcard clock

CT X

Smartcard C4

CRDIO

I/O

Smartcard I/O

CT X

Smartcard C8

CRDDET

Smartcard detection

811

PA0/WAKUP2/

ICCDATA

I/O

Port A0

Interrupt, In-circuit

communication data input

912

PA1/WAKUP2/

ICCCLK

I/O

Port A1

Interrupt, In-circuit

communication clock input

OSCIN

Input/output oscillator pins. These pins

connect a 4 MHz parallel-resonant crystal, or

an external source to the on-chip oscillator.

OSCOUT

VPP

Must be held low in normal operating mode.

PA6

LED0

Constant current output

I/O

USB Data Minus line

I/O

USB Data Plus line

USBVCC

3.3 V output for USB

VDDA

Power Supply voltage 4-5.5 V

VDD

Power Supply voltage 4-5.5 V

SELF

An external inductance must be connected to

these pins for the step up converter

DIODE

An external diode must be connected to this

pin for the step up converter

ST7GEME4 Datasheet(PDF) 8 Page - STMicroelectronics

ST7GEME4 Datasheet(HTML) 8 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Datasheet Download

Link URL