24LC16B-ISLASHP datasheet(5/40 Pages) MICROCHIP

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 2002-2012 Microchip Technology Inc.

DS21703L-page 5

24AA16/24LC16B

2.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2-1.

TABLE 2-1:

PIN FUNCTION TABLE

2.1

Serial Address/Data Input/Output

(SDA)

SDA is a bidirectional pin used to transfer addresses

and data into and out of the device. Since it is an open-

drain terminal, the SDA bus requires a pull-up resistor

to VCC (typical 10 k

 for 100 kHz, 2 k for 400 kHz).

For normal data transfer, SDA is allowed to change

only during SCL low. Changes during SCL high are

reserved for indicating Start and Stop conditions.

2.2

Serial Clock (SCL)

The SCL input is used to synchronize the data transfer

to and from the device.

2.3

Write-Protect (WP)

The WP pin must be connected to either VSS or VCC.

If tied to VSS, normal memory operation is enabled

(read/write the entire memory 000-7FF).

If tied to VCC, write operations are inhibited. The entire

memory will be write-protected. Read operations are

not affected.

2.4

A0, A1, A2

The A0, A1 and A2 pins are not used by the 24XX16.

They may be left floating or tied to either VSS or VCC.

Name

PDIP

SOIC

TSSOP

DFN

TDFN

MSOP

SOT-23

Description

—

Not Connected

—

Not Connected

—

Not Connected

VSS

Ground

SDA

Serial Address/Data I/O

SCL

Serial Clock

Write-Protect Input

VCC

+1.7V to 5.5V Power Supply

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