24AA64/24LC64
64K I2C™CMOS Serial EEPROM
DEVICE SELECTION TABLE
Part
Number
Vcc
Range
Max Clock
Frequency
†
PACKAGE TYPE
Temp
Ranges
1.8-5.5V
400 kHz
2.5-5.5V
400 kHz
1
A1
2
A2
3
Vss
C
24LC64
A0
8
4
†
100 kHz for Vcc < 2.5V.
FEATURES
7
WP
6
SCL
SDA
8-LEAD SOIC
1
8
Vcc
7
WP
6
SCL
4
A0
5
SDA
1
2
3
4
8
2
A1
3
A2
Vss
24xx64
8-LEAD TSSOP
WP
Vcc
A0
A1
24xx64
• 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
• 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
• 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
24xx64
24AA64
8-LEAD PDIP
7
6
5
SCL
SDA
Vss
A2
BLOCK DIAGRAM
A0 A1 A2 WP
HV GENERATOR
DESCRIPTION
The Microchip Technology Inc. 24AA64/24LC64
(24xx64*) is a 8K x 8 (64K 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 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
VCC
VSS
SENSE AMP
R/W CONTROL
I2C is a trademark of Philips Corporation.
*24xx64 is used in this document as a generic part number for the 24AA64/24LC64 devices.
2000 Microchip Technology Inc.
DS21189D-page 1
