24AA01-/P Ver la hoja de datos (PDF) - Microchip Technology

Número de pieza

componentes Descripción

Fabricante

24AA01-/P

1K I2C™ Serial EEPROM

Microchip Technology 

24AA01/24LC01B

8.0 PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 8-1.

TABLE 8-1: PIN FUNCTION TABLE

Name

A0

A1

A2

VSS

SDA

SCL

WP

VCC

PDIP

1

2

3

4

5

6

7

8

SOIC

1

2

3

4

5

6

7

8

TSSOP

1

2

3

4

5

6

7

8

MSOP SOT23

Description

1

— Not Connected

2

— Not Connected

3

— Not Connected

4

2 Ground

5

3 Serial Address/Data I/O

6

1 Serial Clock

7

5 Write Protect Input

8

4 +1.8V to 5.5V Power Supply

8.1 A0, A1, A2

These pins are not used by the 24XX01. They may be

left floating or tied to either VSS or VCC.

8.2 Serial Address/Data Input/Output

(SDA)

This is a bi-directional pin used to transfer addresses

and data into and data out of the device. It is an open

drain terminal. Therefore, the SDA bus requires a pull-

up resistor to VCC (typical 10 kΩ for 100 kHz, 2 kΩ for

400 kHz).

For normal data transfer SDA is allowed to change only

during SCL LOW. Changes during SCL HIGH are

reserved for indicating the START and STOP condi-

tions.

8.3 Serial Clock (SCL)

This input is used to synchronize the data transfer from

and to the device.

8.4 Write-Protect (WP)

This pin must be connected to either VSS or VCC.

If tied to VSS normal memory operation is enabled

(read/write the entire memory 00-7F).

If tied to VCC, WRITE operations are inhibited. The

entire memory will be write-protected. Read operations

are not affected.

This feature allows the user to use the 24XX01 as a

serial ROM when WP is enabled (tied to VCC).

 2002 Microchip Technology Inc.

DS21711A-page 11

Share Link: