24AA08/24LC08B
8K I2C™ Serial EEPROM
Description:
Device Selection Table
The Microchip Technology Inc. 24AA08/24LC08B
(24XX08*) is a 8 Kbit Electrically Erasable PROM. The
device is organized as four blocks of 256 x 8-bit
memory with a 2-wire serial interface. Low voltage
design permits operation down to 1.8V, with standby
and active currents of only 1 μA and 1 mA,
Part
Number
VCC
Range
Max Clock
Frequency
Temp
Ranges
24AA08
1.8-5.5
2.5-5.5
400 kHz(1)
400 kHz
I
24LC08B
I, E
Note 1: 100 kHz for VCC <2.5V
respectively. The 24XX08 also has a page write
capability for up to 16 bytes of data. The 24XX08 is
available in the standard 8-pin PDIP, surface mount
SOIC, TSSOP, 2x3 DFN and MSOP packages, and is
also available in the 5-lead SOT-23 package.
Features:
• Single supply with operation down to 1.8V
• Low-power CMOS technology:
- 1 mA active current, typical
Block Diagram
- 1 μA standby current, typical (I-temp)
• Organized as 4 blocks of 256 bytes (4 x 256 x 8)
• 2-wire serial interface bus, I2C™ compatible
• Schmitt Trigger inputs for noise suppression
• Output slope control to eliminate ground bounce
• 100 kHz (<2.5V) and 400 kHz (≥2.5V) compatibility
• Self-timed write cycle (including auto-erase)
• Page write buffer for up to 16 bytes
• 2 ms typical write cycle time for page write
• Hardware write-protect for entire memory
• Can be operated as a serial ROM
HV
Generator
WP
I/O
Control
Logic
Memory
Control
Logic
EEPROM
Array
XDEC
Page
Latches
I/O
SCL
YDEC
SDA
• Factory programming (QTP) available
• ESD protection > 4,000V
Sense Amp.
R/W Control
VCC
VSS
• 1,000,000 erase/write cycles
Package Types
• Data retention > 200 years
SOIC, TSSOP
• 8-lead PDIP, SOIC, TSSOP, DFN and MSOP
packages
PDIP, MSOP
A0
1
8
VCC
1
8
7
6
5
A0
A1
A2
VCC
WP
• 5-lead SOT-23 package
2
3
4
A1
A2
2
3
4
7
6
5
WP
• Standard and Pb-free finishes available
• Available for extended temperature ranges:
- Industrial (I): -40°C to +85°C
SCL
SCL
SDA
VSS
SDA VSS
- Automotive (E): -40°C to +125°C
SOT-23-5
DFN
1
VCC
WP
A0
8
7
6
5
WP
Vcc
1
5
4
SCL
2
3
4
A1
SCL
SDA
2
3
A2
VSS
Vss
SDA
Note:
Pins A0, A1 and A2 are not used by the 24XX08. (No
internal connections).
*24XX08 is used in this document as a generic part
number for the 24AA08/24LC08B devices.
© 2005 Microchip Technology Inc.
DS21710D-page 1