Datasheet

 2010 Microchip Technology Inc. DS22123B-page 1
25AA02E48
Device Selection Table
Features:
• Pre-programmed Globally Unique, 48-bit Node
Address
• Compatible with EUI-48™ and EUI-64™
• 10 MHz max. Clock Frequency
• Low-Power CMOS Technology:
- Max. Write Current: 5 mA at 5.5V
- Read Current: 5 mA at 5.5V, 10 MHz
- Standby Current: 1 A at 2.5V
• 256 x 8-bit Organization
• Write Page mode (up to 16 bytes)
• Sequential Read
• Self-Timed Erase and Write Cycles (5 ms max.)
• Block Write Protection:
- Protect none, 1/4, 1/2 or all of array
• Built-in Write Protection:
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
• High Reliability:
- Endurance: 1,000,000 erase/write cycles
- Data retention: >200 years
- ESD protection: >4000V
• Temperature Ranges Supported:
• Pb-Free and RoHS Compliant
Pin Function Table
Description:
The Microchip Technology Inc. 25AA02E48 is a 2 Kbit
Serial Electrically Erasable Programmable Read-Only
Memory (EEPROM). The memory is accessed via a
simple Serial Peripheral Interface (SPI) compatible
serial bus. The bus signals required are a clock input
(SCK) plus separate data in (SI) and data out (SO)
lines. Access to the device is controlled through a Chip
Select (CS
) input.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused, transi-
tions on its inputs will be ignored, with the exception of
Chip Select, allowing the host to service higher priority
interrupts.
The 25AA02E48 is available in the standard 8-lead
SOIC and 6-lead SOT-23 packages.
Package Types (not to scale)
Part Number VCC Range Page Size Temp. Ranges Packages
25AA02E48 1.8-5.5V 16 Bytes I SN, OT
- Industrial (I): -40Cto +85C
Name Function
CS
Chip Select Input
SO Serial Data Output
WP
Write-Protect
V
SS Ground
SI Serial Data Input
SCK Serial Clock Input
HOLD
Hold Input
V
CC Supply Voltage
CS
SO
WP
V SS
1
2
3
4
8
7
6
5
V
CC
HOLD
SCK
SI
(SN)
SOIC
V SS
1
2
34
6
5
V
DD
CS
SO
(OT)
SOT-23
SCK
SI
2K SPI Bus Serial EEPROM with EUI-48™ Node Identity