ST7LCRE4U1 datasheet(8/29 Pages) STMICROELECTRONICS

Teilenummer	ST7LCRE4U1

Bauteilbeschribung	Full-speed USB MCU with smartcard interface

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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ST7LCR

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Legend/abbreviations

●

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

●

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

●

Output level: HS = 10 mA 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

11

OSCIN

CT

Input/Output oscillator pins. These pins

connect a 4 MHz parallel-resonant crystal, or

an external source to the on-chip oscillator.

12

OSCOUT

CT

13

GND

S

Must be held low in normal operating mode.

14

NC

Not used(1)

15

NC

Not used

16

DM

I/O

CT

USB Data Minus line

17

DP

I/O

CT

USB Data Plus line

18

USBVCC

O

CT

3.3 V Output for USB

19

VDDA

S

Power supply voltage 4-5.5 V

20

VDD

S

Power supply voltage 4-5.5 V

21

NC

Not used

22

NC

Not used

23

GNDA

S

Ground

24

GND

S

1.

Pins 8,9,10, and 14 must be connected to ground.

Table 2.

Pin description (continued)

number

Pin name

Level

Port/control

Main function

(after reset)

Alternate function

Input Output

VFQFPN24

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ST7LCRE4U1 Datenblatt(PDF) 8 Page - STMicroelectronics

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