24AA128/24LC128/24FC128
128K I2C™CMOS Serial EEPROM
DEVICE SELECTION TABLE
PACKAGE TYPE
PDIP
Part
Number
VCC
Range
Max Clock
Frequency
24AA128
1.8-5.5V
400 kHz
2.5-5.5V
400 kHz‡
2.5-5.5V
1 MHz
2
A2
3
Vss
I
8
4
†100
‡100
kHz for VCC < 2.5V.
kHz for E temperature range.
FEATURES
SOIC
The Microchip Technology Inc. 24AA128/24LC128/
24FC128 (24XX128*) is a 16K x 8 (128K bit) Serial
Electrically Erasable PROM, capable of operation
across a broad voltage range (1.8V 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 capability 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 1M bit address space. This device
is available in the standard 8-pin plastic DIP, 8-pin SOIC
(150 and 208 mil), and 14-pin TSSOP packages.
8
SCL
SDA
A2
VSS
4
5
A0
A1
1
NC
NC
NC
A2
3
Vss
7
14
13
12
11
10
9
8
5
6
VCC
WP
3
4
SDA
6
2
2
SCL
7
A1
TSSOP
WP
6
1
24XX128
DESCRIPTION
A0
7
24XX128
• Low power CMOS technology
- Maximum write current 3 mA at 5.5V
- Maximum read current 400 µA at 5.5V
- Standby current 100 nA typical at 5.5V
• 2-wire serial interface bus, I2C compatible
• Cascadable for up to eight devices
• Self-timed ERASE/WRITE cycle
• 64-byte page-write mode available
• 5 ms max write-cycle time
• Hardware write protect for entire array
• Output slope control to eliminate ground bounce
• Schmitt trigger inputs for noise suppression
• 100,000 erase/write cycles guaranteed
• Electrostatic discharge protection > 4000V
• Data retention > 200 years
• 8-pin PDIP and SOIC (150 and 208 mil) packages
• 14-pin TSSOP package
• Temperature ranges:
- Commercial (C)
0° to +70°C
- Industrial (I):
-40°C to +85°C
- Automotive (E):
-40°C to +125°C
Vcc
5
I, E
24FC128
1
A1
C
24LC128
A0
24XX128
†
Temp
Ranges
Vcc
WP
NC
NC
NC
SCL
SDA
BLOCK DIAGRAM
A0 A1 A2 WP
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
HV GENERATOR
XDEC
EEPROM
ARRAY
PAGE LATCHES
I/O
SCL
YDEC
SDA
VCC
VSS
SENSE AMP
R/W CONTROL
I2C is a trademark of Philips Corporation.
*24XX128 is used in this document as a generic part number for the 24AA128/24LC128/24FC128 devices.
© 1999 Microchip Technology Inc.
Preliminary
DS21191F-page 1
