24LCS21A-I/P Microchip Technology Inc., 24LCS21A-I/P Datasheet

24LCS21A-I/P

Manufacturer Part Number

24LCS21A-I/P

Description

1K 2.5V DUAL MODE SERIAL EEPROM, IND

Manufacturer

Microchip Technology Inc.

Datasheet

1.24LCS21A-IP.pdf (4 pages)

Specifications of 24LCS21A-I/P

Capacitance, Input

10 pF

Capacitance, Output

10 pF

Current, Input, Leakage

±1 μA

Current, Operating

1 mA (Read), 3 mA (Write)

Current, Output, Leakage

±1

Data Retention

>200 yrs.

Density

Interface

2-Wire

Memory Type

Serial EEPROM

Organization

128×8

Package Type

PDIP

Temperature, Operating

-40 to +85 °C

Time, Access

900 ns

Time, Fall

300 ns

Time, Rise

1000 ns

Voltage, Esd

≥4 kV

Voltage, Input, High

1.75 V

Voltage, Input, Low

0.75 V (SCL, SDA Pins), 0.5 V (VCLK Pins)

Voltage, Output, Low

0.4, 0.6 V

Voltage, Supply

2.5 to 5.5 V

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

24LCS21A-I/P

Manufacturer:

MICROCHIP

Quantity:

12 000

Current page: 1 of 4
Download datasheet (233Kb)

DDC is a trademark of the Video Electronics Standards Assoc.

Features:

• Single Supply with Operation Down to 2.5V

• Completely Implements DDC1™/DDC2™ Inter-

• Low-Power CMOS Technology:

• 2-Wire Serial Interface Bus, I

• 100 kHz (2.5V) and 400 kHz (5V) Compatibility

• Self-Timed Write Cycle (including Auto-Erase)

• Hardware Write-Protect Pin

• Page Write Buffer for up to Eight Bytes

• 1,000,000 Erase/Write Cycles Ensured

• Data Retention > 200 years

• ESD Protection > 4000V

• 8-pin PDIP and SOIC Package

• Available for Extended Temperature Ranges:

• Pb-Free and RoHS Compliant

Description:

The Microchip Technology Inc. 24LCS21A is a

128 x 8-bit dual-mode Electrically Erasable PROM.

This device is designed for use in applications

requiring storage and serial transmission of configura-

tion and control information. Two modes of operation

have been implemented: Transmit-Only mode and

Bidirectional mode. Upon power-up, the device will be

in the Transmit-Only mode, sending a serial bit stream

of the memory array from 00h to 7Fh, clocked by the

VCLK pin. A valid high-to-low transition on the SCL

pin will cause the device to enter the Transition mode

and look for a valid control byte on the I

detects a valid control byte from the master, it will

switch into Bidirectional mode, with byte selectable

read/write capability of the memory array using SCL.

If no control byte is received, the device will revert to

the Transmit-Only mode after it receives 128 consec-

utive VCLK pulses while the SCL pin is idle. The

24LCS21A also enables the user to write-protect the

entire memory array using its write-protect pin. The

24LCS21A is available in a standard 8-pin PDIP and

SOIC package in industrial temperature range.

C is a trademark of Philips Corporation.

face for Monitor Identification, Including Recovery

to DDC1

- 1 mA active current, typical

- 10 μA standby current, typical at 5.5V

- Industrial (I):

1K 2.5V Dual Mode I

-40°C to +70°C

C™ Compatible

C bus. If it

Package Types

Block Diagram

Pin Function Table

™

SDA

PDIP

SOIC

Control

Serial EEPROM

VCLK

Logic

Name

VCLK

I/O

SDA

SCL

Vss

24LCS21A

Vss

Control

Memory

Logic

Write-Protect (active low)

Ground

Serial Address/Data I/O

Serial Clock (Bidirectional mode)

Serial Clock (Transmit-Only mode)

+2.5V to 5.5V Power Supply

No Connection

XDEC

Function

DS21161H-page 1

Vcc

VCLK

SCL

SDA

Page Latches

R/W Control

HV Generator

Sense AMP

Vcc

VCLK

SCL

SDA

EEPROM

Array

YDEC

Related parts for 24LCS21A-I/P

24LCS21A-I/P Summary of contents

Page 1

... VCLK pulses while the SCL pin is idle. The 24LCS21A also enables the user to write-protect the entire memory array using its write-protect pin. The 24LCS21A is available in a standard 8-pin PDIP and SOIC package in industrial temperature range. DDC is a trademark of the Video Electronics Standards Assoc. ...

Page 2

... ELECTRICAL CHARACTERISTICS (†) Absolute Maximum Ratings V .............................................................................................................................................................................7.0V CC All inputs and outputs w.r.t. V ......................................................................................................... -0. Storage temperature ...............................................................................................................................-65°C to +150°C Ambient temperature with power applied ................................................................................................-40°C to +125°C ESD protection on all pins ......................................................................................................................................................≥ † NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device ...

Page 3

... Schmitt Trigger inputs which provide noise and specification for standard operation. I 24LCS21A Units Remarks kHz (Note 1) ns (Note 1) ns After this period the first clock pulse is generated ns Only relevant for repeated ...

Page 4

... To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office PART NO. X /XX Device Temperature Package Range Device: 24LCS21A Dual Mode I2C Serial EEPROM 24LCS21AT Dual Mode I2C Serial EEPROM (Tape and Reel) Temperature I = -40°C to +85°C Range: Package Plastic DIP (300 mil Body), 8-lead ...

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