24AA128/24LC128/24FC128
128K I2C™ CMOS Serial EEPROM
• Temperature ranges:
Device Selection Table
- Industrial (I):
- Automotive (E):
-40°C to +85°C
-40°C to +125°C
Part
VCC
Max. Clock
Frequency
Temp.
Ranges
Number
Range
24AA128
1.7-5.5V
400 kHz(1)
I
Description:
24LC128
24FC128
2.5-5.5V
1.7-5.5V
400 kHz
1 MHz(2)
I, E
I
The Microchip Technology Inc. 24AA128/24LC128/
24FC128 (24XX128*) is a 16K x 8 (128 Kbit) Serial
Electrically Erasable PROM (EEPROM), capable of
operation across a broad voltage range (1.7V to 5.5V).
It has been developed for advanced, low-power
applications such as personal communications or data
acquisition. This device also has a page write capabil-
ity of up to 64 bytes of data. This device is capable of
both random and sequential reads up to the 128K
boundary. Functional address lines allow up to eight
devices on the same bus, for up to 1 Mbit address
space. This device is available in the standard 8-pin
plastic DIP, SOIC (3.90 mm and 5.28 mm), TSSOP,
MSOP and DFN packages.
Note 1: 100 kHz for VCC < 2.5V.
2: 400 kHz for VCC < 2.5V.
Features:
• Single supply with operation down to 1.7V for
24AA128/24FC128 devices, 2.5V for 24LC128
devices
• Low-power CMOS technology:
- Write current 3 mA, 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
• 1 MHz clock for FC versions
Block Diagram
A0 A1 A2WP
HV Generator
I/O
Control
Logic
Memory
Control
Logic
EEPROM
Array
XDEC
• Page write time 5 ms, typical
• Self-timed erase/write cycle
Page Latches
• 64-byte page write buffer <adjust per device>
• Hardware write-protect
SCL
I/O
SDA
YDEC
• ESD protection >4000V
• More than 1 million erase/write cycles
• Data retention > 200 years
VCC
VSS
• Factory programming available
Sense Amp.
R/W Control
• Packages include 8-lead PDIP, SOIC, TSSOP,
DFN and MSOP packages
• Pb-free and RoHS compliant
*24XX128 is used in this document as a generic part number
for the 24AA128/24LC128/24FC128 devices.
Package Types
PDIP/SOIC
TSSOP/MSOP*
DFN
A0
1
8
VCC
1
2
8
7
1
2
3
4
A0
A1
8
7
6
5
VCC
WP
A0
A1
VCC
WP
A1
A2
2
3
4
7
6
5
WP
A2
SCL
SDA
SCL
SDA
3
4
6
5
A2
SCL
SDA
VSS
VSS
VSS
Note: * Pins A0 and A1 are no-connects for the MSOP package only.
© 2007 Microchip Technology Inc.
DS21191P-page 1