Download Datasheets 24LC21A Device 
Download datasheets and other technical documentation for microcontrollers - download datasheets and technical documentation for microcontrollers

PICmicro Microcontrollers
PICmicro flexible microcontroller solutions provide results!

Analog & Interface Products
A broad spectrum of analog products with a focus on power management, thermal management, linear and mixed-signal solutions

KEELOQ Authentication Products
KEELOQ is a patented code-hopping technology

Memory Products
A broadest selections of memory devices on the market for embedded control applications

microID RFID Products
Radio Frequency Identification Tags (RFID)
rfPIC Microcontrollers
New UHF radio frequency 8-bit microcontrollers

Home - Memory Products - 128 to 1K Devices - 24LC21A Device, download datasheet

Download Datasheets 24LC21A Device

The 24LC21A is a 128 x 8-bit dual-mode Serial Electrically Erasable PROM designed to meet the plug-and-play requirements of todays advanced monitors. The 24LC21A represents a simple, low-cost route to meeting the stringent standards for monitor identification since it completely implements both the DDCI and DDC2 operating modes, including recovery to DDC1, as defined by the Video Electronics Standards Association. The 24LC21A, which is pin and function compatible with 24LC21, features a 2-wire serial interface bus (I2C compatible), both commercial and industrial temperature ranges, ESD protection > 4000V, and a wide voltage range (2.5V to 5.5V). The 24LC21A is available in standard 8-pin PDIP and SOIC packages.

Datasheet and Other Documentation

Detailed Content

Lit. Number



24LC21A Datasheet


Download 24LC21A Datasheet


In Production

Specification Chart

Operat. Voltage

E/W Cycles

Density (Organ.)

Write Speed

Clock Speed

2.5V to 5.5V


1K bits (x8)

10 ms

400 kHz

Additional Features

Same as 24LC21 with return to DDC1 feature. Plug n Play compatible.

Package Options

8 SOIC 150mil(SN), 8 PDIP(P), 2008-2015 - download datasheets