M
Part
Number
24AA64
24LC64
†
100
24AA64/24LC64
PACKAGE TYPE
Temp
Ranges
I
I, E
A2
Vss
3
4
64K I
2
C
™
CMOS Serial EEPROM
DEVICE SELECTION TABLE
Vcc
Range
1.8-5.5V
2.5-5.5V
Max Clock
Frequency
400 kHz
†
400 kHz
‡
PDIP
A0
A1
1
8
Vcc
WP
SCL
SDA
24xx64
2
7
6
5
kHz for Vcc < 2.5V.
‡
100 kHz for E temperature range.
FEATURES
• Low power CMOS technology
- Maximum write current 3 mA at 5.5V
- Maximum read current 400
µ
A at 5.5V
- Standby current 100 nA typical at 5.5V
• 2-wire serial interface bus, I
2
C compatible
• Cascadable for up to eight devices
• Self-timed ERASE/WRITE cycle
• 32-byte page or byte write modes 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
• 1,000,000 erase/write cycles guaranteed
• Electrostatic discharge protection > 4000V
• Data retention > 200 years
• 8-pin PDIP, SOIC (150 and 208 mil) and TSSOP
packages; 14-pin SOIC package
• Temperature ranges:
- Industrial (I):
-40
°
C to +85
°
C
- Automotive (E)
-40
°
C to +125
°
C
SOIC
A0
A1
A2
V
SS
1
8
V
CC
WP
SCL
SDA
24xx64
2
3
4
7
6
5
TSSOP
WP
Vcc
A0
A1
1
2
3
4
8
7
6
5
SCL
SDA
Vss
A2
24xx64
BLOCK DIAGRAM
A0…A2
WP
HV GENERATOR
DESCRIPTION
The Microchip Technology Inc. 24AA64/24LC64
(24xx64*) is a 8K x 8 (64K bit) Serial Electrically Eras-
able PROM capable of operation across a broad volt-
age 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 32 bytes of data.
This device is capable of both random and sequential
reads up to the 64K boundary. Functional address lines
allow up to eight devices on the same bus, for up to 512
Kbits address space. This device is available in the
standard 8-pin plastic DIP, 8-pin SOIC (150 and
208 mil), and 8-pin TSSOP.
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
XDEC
EEPROM
ARRAY
PAGE LATCHES
I/O
SCL
YDEC
SDA
V
CC
V
SS
SENSE AMP
R/W CONTROL
I
2
C is a trademark of Philips Corporation.
*24xx64 is used in this document as a generic part number for the 24AA64/24LC64 devices.
©
1998 Microchip Technology Inc.
DS21189B-page 1
MICROCHIP [ MICROCHIP TECHNOLOGY ]
