24AA128/24LC128/24FC128
128K I
2
C
™
CMOS Serial EEPROM
Device Selection Table
Part
Number
24AA128
24LC128
24FC128
Note 1:
2:
V
CC
Range
1.7-5.5V
2.5-5.5V
1.7-5.5V
Max. Clock
Frequency
400 kHz
(1)
400 kHz
1 MHz
(2)
Temp.
Ranges
I
I, E
I
• Temperature ranges:
- Industrial (I):
-40°C to +85°C
- Automotive (E):
-40°C to +125°C
Description:
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.
100 kHz for V
CC
< 2.5V.
400 kHz for V
CC
< 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, 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
• 1 MHz clock for FC versions
• Page write time 5 ms, typical
• Self-timed erase/write cycle
• 64-byte page write buffer <adjust per device>
• Hardware write-protect
• ESD protection >4000V
• More than 1 million erase/write cycles
• Data retention > 200 years
• Factory programming available
• Packages include 8-lead PDIP, SOIC, TSSOP,
DFN and MSOP packages
• Pb-free and RoHS compliant
Block Diagram
A0 A1 A2 WP
HV Generator
I/O
C
ontrol
L
ogic
M
emory
C
ontrol
L
ogic
XDEC
EEPROM
Array
Page Latches
I/O
SDA
SCL
YDEC
V
CC
V
SS
Sense Amp.
R/W Control
*24XX128 is used in this document as a generic part number
for the 24AA128/24LC128/24FC128 devices.
Package Types
PDIP/SOIC
A0
A1
A2
V
SS
1
24XX128
2
3
4
8
7
6
5
V
CC
WP
SCL
SDA
A0
A1
A2
V
SS
TSSOP/MSOP*
1
24XX128
2
3
4
8
7
6
5
V
CC
WP
SCL
SDA
A0
A1
A2
V
SS
1
2
3
4
24XX128
DFN
8 V
CC
7 WP
6 SCL
5 SDA
Note: *
Pins A0 and A1 are no-connects for the MSOP package only.
©
2007 Microchip Technology Inc.
DS21191P-page 1
MICROCHIP [ MICROCHIP TECHNOLOGY ]
