24AA01 Datasheet, PDF (1/12 Pages) Microchip Technology – 1K/2K 1.8V I 2 C O Serial EEPROMs

24AA01/02
1K/2K 1.8V I²C^™ Serial EEPROMs
FEATURES
• Single supply with operation down to 1.8V
• Low power CMOS technology
- 1 mA active current typical
- 10 µA standby current typical at 5.5V
- 3 µA standby current typical at 1.8V
• Organized as a single block of 128 bytes (128 x 8)
or 256 bytes (256 x 8)
• 2-wire serial interface bus, I²C™ compatible
• Schmitt trigger, filtered inputs for noise suppres-
sion
• Output slope control to eliminate ground bounce
• 100 kHz (1.8V) and 400 kHz (5V) compatibility
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 8 bytes
• 2 ms typical write cycle time for page-write
• Hardware write protect for entire memory
• Can be operated as a serial ROM
• ESD protection > 3,000V
• 10,000,000 ERASE/WRITE cycles guaranteed on
24AA01
• 1,000,000 ERASE/WRITE cycles guaranteed on
24AA02
• Data retention > 200 years
• 8-pin DIP or SOIC package
• Available for extended temperature ranges
- Commercial (C):
- Industrial (I)
0°C to +70°C
-40°C to +85°C
DESCRIPTION
The Microchip Technology Inc. 24AA01 and 24AA02
are 1K bit and 2K bit Electrically Erasable PROMs. The
devices are organized as a single block of 128 x 8-bit or
256 x 8-bit memory with a two wire serial interface.
Low-voltage design permits operation down to 1.8 volts
with standby and active currents of only 3 µA and 1 mA,
respectively. The 24AA01 and 24AA02 also have page-
write capability for up to 8 bytes of data. The 24AA01
and 24AA02 are available in the standard 8-pin DIP and
8-pin surface mount SOIC packages.
PACKAGE TYPES
PDIP
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
SOIC
A0 ¹
A1 ²
A2 ³
VSS
4
8
VCC
7
WP
6
SCL
5
SDA
BLOCK DIAGRAM
WP
HV GENERATOR
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
XDEC
SDA SCL
EEPROM
ARRAY
PAGE LATCHES
YDEC
VCC
SENSE AMP
VSS
R/W CONTROL
I²C is a trademark of Philips Corporation.
© 1996 Microchip Technology Inc.
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