24CS512 datasheet(2/66 Pages) MICROCHIP

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24CS512

DS20005769C-page 2

 2018-2021 Microchip Technology Inc.

Description

The Microchip Technology Inc. 24CS512 provides

512 Kbits of Serial EEPROM, utilizing an I2C (two-wire)

serial interface with 3.4 MHz High-Speed mode

capability. The device is organized as 65,536 bytes of

8 bits each (64 Kbytes) and is optimized for use in

consumer and industrial applications where reliable

and dependable nonvolatile memory storage is

essential. The 24CS512 allows up to eight devices to

share a common I2C (two-wire) bus and is capable of

operation across a broad voltage range (1.7V to 5.5V).

The 24CS512 features a 2-Kbit Security register, sepa-

rate from the 512-Kbit memory array. The first half of the

Security register is read-only and contains a factory-pro-

grammed, ensured unique, 128-bit serial number in the

first 16 bytes. The 128-bit serial number is unique across

the entire CS series of Serial EEPROM products and

eliminates the time-consuming step of performing and

ensuring serialization of a product on a manufacturing

line. The 128-bit read-only serial number is followed by

an additional 1 Kbit (128 bytes) of user-programmable

EEPROM. The user-programmable section of the Secu-

rity register can later be permanently write-protected via

a software sequence.

The device also contains a Configuration register,

which allows the write protection behavior to be

configured for legacy hardware write protection or

enhanced software write protection which allows the

user to protect any of the eight independent 64-Kbit

zones. Once the desired configuration is set, the

Configuration register can be permanently locked,

thereby preventing any further changes to the device

operation.

For added reliability, the 24CS512 utilizes a built-in

Error Correction Code (ECC) scheme. This scheme

can correct up to one incorrectly read bit within a

four-byte read out. Additionally, the Configuration

is set when ECC is invoked.

The 24CS512 supports the I2C Manufacturer Identifica-

tion (ID) command which will return a unique value for

the 24CS512, allowing easy identification within the

application.

System Configuration Using Serial EEPROMs

I2C MCU

Client 0

24CSXXX

RPUP(max) =

tR(max)

0.8473

 CL

RPUP(min) =

VCC – VOL(max)

IOL

VCC

VSS

VCC

SCL

SDA

VSS

VCC

SDA

SCL

Client 1

24CSXXX

VSS

VCC

SDA

SCL

Client 7

24CSXXX

VSS

VCC

SDA

SCL

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