24AA64_02 Datasheet, PDF (1/24 Pages) Microchip Technology – 64K I2C™ Serial EEPROM

24AA64/24LC64
64K I²C^™ Serial EEPROM
Device Selection Table
Part
Number
VCC
Range
Max Clock
Frequency
24AA64
1.8-5.5
400 kHz⁽¹⁾
24LC64
2.5-5.5
400 kHz
Note 1: 100 kHz for VCC <2.5V
Temp
Ranges
I
I, E
Features
• Single supply with operation down to 1.8V
• Low power CMOS technology
- 1 mA active current typical
- 1 µA standby current (max.) (I-temp)
• Organized as 8 blocks of 8K bit (64K bit)
• 2-wire serial interface bus, I²C™ compatible
• Cascadable for up to eight devices
• Schmitt Trigger inputs for noise suppression
• Output slope control to eliminate ground bounce
• 100 kHz (24AA64) and 400 kHz (24LC64) com-
patibility
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 32 bytes
• 2 ms typical write cycle time for page-write
• Hardware write protect for entire memory
• Can be operated as a serial ROM
• Factory programming (QTP) available
• ESD protection > 4,000V
• 1,000,000 erase/write cycles
• Data retention > 200 years
• 8-lead PDIP, SOIC, TSSOP, and MSOP package
• Available temperature ranges:
- Industrial (I):
-40°C to +85°C
- Automotive (E):
-40°C to +125°C
Description
The Microchip Technology Inc. 24AA64/24LC64
(24XX64*) is a 64 Kbit Electrically Erasable PROM.
The device is organized as eight blocks of 1K x 8-bit
memory with a 2-wire serial interface. Low voltage
design permits operation down to 1.8V with standby
and active currents of only 1 µA and 1 mA respectively.
It has been developed for advanced, low power appli-
cations such as personal communications or data
acquisition. The 24XX64 also has a page-write capabil-
ity for up to 32 bytes of data. Functional address lines
allow up to eight devices on the same bus, for up to
512 Kbits address space. The 24XX64 is available in
the standard 8-pin PDIP, surface mount SOIC, TSSOP
and MSOP packages.
Package Types
PDIP/SOIC/TSSOP/MSOP
ROTATED TSSOP
(24AA64X/24LC64X)
A0 1
A1 2
A2 3
Vss 4
8 Vcc
7 WP
WP
Vcc
1
2
6 SCL _A0 3
5 SDA ^{A1 4}
8 _SCL
7 _SDA
6 _Vss
5 _A2
Block Diagram
A0 A1 A2WP
HV GENERATOR
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
I/O
SCL
SDA
VCC
VSS
XDEC
EEPROM
ARRAY
PAGE LATCHES
YDEC
SENSE AMP
R/W CONTROL
*24XX64 is used in this document as a generic part number for the 24AA64/24LC64 devices.
 2002 Microchip Technology Inc.
DS21189F-page 1