ST7GEME4M1 datasheet(8/28 Pages) STMICROELECTRONICS

Numer części	ST7GEME4M1

Szczegółowy opis	Full-speed USB MCU with smartcard firmware and EMV/non-EMV interface

Download	28 Pages

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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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

2

5

CRDRST

O

CT X

X

Smartcard reset

3

6

CRDCLK

O

CT X

X

Smartcard clock

47

C4

O

CT X

X

Smartcard C4

5

8

CRDIO

I/O

CT

X

Smartcard I/O

69

C8

O

CT X

X

Smartcard C8

7

10

CRDDET

I

C

T

X

Smartcard detection

811

PA0/WAKUP2/

ICCDATA

I/O

CT

XX

X

Port A0

Interrupt, In-circuit

communication data input

912

PA1/WAKUP2/

ICCCLK

I/O

CT

XX

X

Port A1

Interrupt, In-circuit

communication clock input

11

14

OSCIN

C

T

Input/output oscillator pins. These pins

connect a 4 MHz parallel-resonant crystal, or

an external source to the on-chip oscillator.

12

15

OSCOUT

CT

13

16

VPP

S

Must be held low in normal operating mode.

14

17

PA6

I

C

T

PA6

15

18

LED0

O

HS

X

Constant current output

16

19

DM

I/O

CT

USB Data Minus line

17

20

DP

I/O

CT

USB Data Plus line

18

21

USBVCC

O

CT

3.3 V output for USB

19

22

VDDA

S

Power Supply voltage 4-5.5 V

20

23

VDD

S

Power Supply voltage 4-5.5 V

21

24

SELF

O

CT

An external inductance must be connected to

these pins for the step up converter

22

1

DIODE

S

CT

An external diode must be connected to this

pin for the step up converter

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