24AA256UID Datasheet, PDF (1/28 Pages) Microchip Technology – 256K I2C™ Serial EEPROM

24AA256UID
256K I²C™ Serial EEPROM with EUI-48™, EUI-64™ and
Unique 32-Bit Serial Number
Device Selection Table
Part Number
VCC
Range
Max. Clock
Frequency
24AA256UID
1.7-5.5V
400 kHz⁽¹⁾
Note 1: 100 kHz for VCC < 2.5V.
Temp.
Ranges
I
Page
Size
64-byte
EUI-48™ EUI-64™
Yes
Yes
Unique ID
Length
32-bit
Features:
Description:
• Pre-Programmed 32-Bit Serial Number:
- Unique across all UID-family EEPROMs
- Scalable to 48-bit, 64-bit, 128-bit, 256-bit,
and other lengths
• Pre-Programmed Globally Unique, 48-bit or 64-bit
Node Address:
- Compatible with EUI-48™ and EUI-64™
• Codes Stored in Permanently Write-Protected
Upper 1/8th of EEPROM Array
• Single Supply with Operation Down to 1.7V
• Low-Power CMOS Technology:
- Active current 400 uA, typical
- Standby current 100 nA, typical
• 2-Wire Serial Interface, I²C^™ Compatible
• Cascadable up to Eight Devices
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce
• 100 kHz and 400 kHz Clock Compatibility
• Page Write Time 5 ms Max.
• Self-Timed Erase/Write Cycle
• 64-Byte Page Write Buffer
• ESD Protection >4000V
• More than One Million Erase/Write Cycles
• Data Retention >200 years
• Packages Include 8-lead PDIP, SOIC and TSSOP
• RoHS Compliant
• Temperature Ranges:
- Industrial (I):
-40C to +85C
The Microchip Technology Inc. 24AA256UID is a 32K x
8 (256 Kbit) Serial Electrically Erasable PROM with
pre-programmed EUI-48 and EUI-64 node addresses
and a 32-bit Unique ID, capable of operation across a
broad voltage range (1.7V to 5.5V). This device also
has a page write capability of up to 64 bytes of data.
This device is available in the standard 8-pin plastic
DIP, SOIC and TSSOP packages.
Block Diagram
A0 A1A2
HV Generator
I/O
Control
Logic
Memory
Control
Logic
I/O
SCL
SDA
VCC
VSS
XDEC
EEPROM
Array
Page Latches
YDEC
Sense Amp.
R/W Control
Package Types
PDIP
SOIC/TSSOP
A0 1
A1 2
A2 3
VSS 4
8 VCC _A0
1
7 NC _{A1 2}
6 SCL _{A2 3}
5 SDA _{VSS 4}
8 _VCC
7 _NC
6 _SCL
5 _SDA
 2013 Microchip Technology Inc.
DS20005215A-page 1