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24AA256UID-I/SN

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30
2013-2016 Microchip Technology Inc. DS20005215C-page 1
24AA256UID
Device Selection Table
Features
• 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 µA, typical
- Standby current 100 nA, typical
• 2-Wire Serial Interface, I
2
C 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 Maximum
• 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
Description
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
Package Types
Part Number
VCC
Range
Max. Clock
Frequency
Temp.
Ranges
Page
Size
EUI-48
™
EUI-64
™
Unique ID
Length
24AA256UID 1.7V-5.5V 400 kHz
(1)
I 64-byte Yes Yes 32-bit
Note 1: 100 kHz for VCC < 2.5V.
HV Generator
EEPROM
Array
Page Latches
YDEC
XDEC
Sense Amp.
R/W Control
Memory
Control
Logic
I/O
Control
Logic
I/O
A0 A1A2
SDA
SCL
V
CC
VSS
A0
A1
A2
V
SS
VCC
NC
SCL
SDA
1
2
3
4
8
7
6
5
24AA256UID
PDIP
SOIC/TSSOP
A0
A1
A2
V
SS
1
2
3
4
8
7
6
5
V
CC
NC
SCL
SDA
24AA256UID
256K I
2
C Serial EEPROM with EUI-48
™
, EUI-64
™
and
Unique 32-Bit Serial Number
24AA256UID
DS20005215C-page 2 2013-2016 Microchip Technology Inc.
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
(†)
VCC.............................................................................................................................................................................6.5V
All inputs and outputs w.r.t. V
SS ......................................................................................................... -0.6V to VCC +1.0V
Storage temperature ...............................................................................................................................-65°C to +150°C
Ambient temperature with power applied..................................................................................................-40°C to +85°C
ESD protection on all pins........................................................................................................................................≥4kV
† NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at these or any other conditions above those
indicated in the operational listings of this specification is not implied. Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
TABLE 1-1: DC CHARACTERISTICS
DC CHARACTERISTICS
Electrical Characteristics:
Industrial (I): V
CC = +1.7V to 5.5V TA = -40°C to +85°C
Param.
No.
Symbol Characteristic Min. Max. Units Conditions
D1 V
IH High-Level Input Voltage 0.7 VCC —V
D2 V
IL Low-Level Input Voltage — 0.3 VCC VVCC ≥ 2.5V
— 0.2 VCC VVCC <2.5V
D3 VHYS Hysteresis of Schmitt
Trigger Inputs
(SDA, SCL pins)
0.05 VCC —VVCC ≥ 2.5V (Note)
D4 VOL Low-Level Output Voltage — 0.40 V IOL = 3.0 mA; VCC = 4.5V
—0.40VI
OL = 2.1 mA; VCC = 2.5V
D5 ILI Input Leakage Current — ±1 µA VIN = VSS or VCC
D6 ILO Output Leakage Current — ±1 µA VOUT = VSS or VCC
D7 CIN,
C
OUT
Pin Capacitance
(all inputs/outputs)
—10pFVCC = 5.0V (Note)
T
A = 25°C, FCLK = 1 MHz
D8 ICCREAD Operating Current — 400 µA VCC = 5.5V, SCL = 400 kHz
I
CCWRITE —3mAVCC = 5.5V
D9 ICCS Standby Current — 1 µA TA = -40°C to +85°C
SCL = SDA = V
CC = 5.5V
A0, A1, A2 = V
SS
Note: This parameter is periodically sampled and not 100% tested.
2013-2016 Microchip Technology Inc. DS20005215C-page 3
24AA256UID
TABLE 1-2: AC CHARACTERISTICS
AC CHARACTERISTICS
Electrical Characteristics:
Industrial (I): V
CC = +1.7V to 5.5V TA = -40°C to +85°C
Param.
No.
Symbol Characteristic Min. Max. Units Conditions
1F
CLK Clock Frequency — 100 kHz 1.7V ≤ VCC <2.5V
—400kHz2.5V≤ VCC ≤ 5.5V
2THIGH Clock High Time 4000 — ns 1.7V ≤ VCC <2.5V
600 — ns 2.5V ≤ V
CC ≤ 5.5V
3TLOW Clock Low Time 4700 — ns 1.7V ≤ VCC <2.5V
1300 — ns 2.5V ≤ VCC ≤ 5.5V
4T
R SDA and SCL Rise Time
(Note 1)
— 1000 ns 1.7V ≤ VCC <2.5V
— 300 ns 2.5V ≤ VCC ≤ 5.5V
5TF SDA and SCL Fall Time
(Note 1)
— 300 ns
6T
HD:STA Start Condition Hold Time 4000 — ns 1.7V ≤ VCC <2.5V
600 — ns 2.5V ≤ VCC ≤ 5.5V
7T
SU:STA Start Condition Setup Time 4700 — ns 1.7V ≤ VCC <2.5V
600 — ns 2.5V ≤ VCC ≤ 5.5V
8THD:DAT Data Input Hold Time 0 — ns Note 2
9T
SU:DAT Data Input Setup Time 250 — ns 1.7V ≤ VCC <2.5V
100 — ns 2.5V ≤ VCC ≤ 5.5V
10 TSU:STO Stop Condition Setup Time 4000 — ns 1.7V ≤ VCC <2.5V
600 — ns 2.5V ≤ V
CC ≤ 5.5V
11 TAA Output Valid from Clock
(Note 2)
— 3500 ns 1.7 V ≤ VCC <2.5V
— 900 ns 2.5 V ≤ VCC ≤ 5.5V
12 T
BUF Bus Free Time: Bus time
must be free before a new
transmission can start
4700 — ns 1.7V ≤ V
CC <2.5V
1300 — ns 2.5V ≤ VCC ≤ 5.5V
13 TOF Output Fall Time from VIH
minimum to VIL maximum
C
B ≤ 100 pF
10 + 0.1C
B 250 ns Note 1
14 T
SP Input Filter Spike
Suppression (SDA and SCL
pins)
—50nsNotes 1 and 3
15 T
WC Write Cycle Time (byte or
page)
—5ms
16 Endurance 1,000,000 — cycles Page mode, 25°C, 5.5V (Note 4)
Note 1: Not 100% tested. C
B = total capacitance of one bus line in pF.
2: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
3: The combined T
SP and VHYS specifications are due to new Schmitt Trigger inputs, which provide improved
noise spike suppression. This eliminates the need for a T
I specification for standard operation.
4: This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance
™
Model, which can be obtained from Microchip’s website
at www.microchip.com.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30

24AA256UID-I/SN

Mfr. #:
Buy 24AA256UID-I/SN
Manufacturer:
Microchip Technology
Description:
EEPROM 256K I2C EE EUI-48 EUI-64 Unique ID
Lifecycle:
New from this manufacturer.
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