24LC164 Datasheet, PDF (1/16 Pages) Microchip Technology – 16K 2.5V Cascadable I2C™ Serial EEPROM

Obsolete Device
24LC164
16K 2.5V Cascadable I²C^™ Serial EEPROM
FEATURES
• Single supply with operation down to 2.5V
• Low power CMOS technology
- 1 mA active current typical
- 10 µA standby current typical at 5.5V
- 5 µA standby current typical at 3.0V
• Organized as eight blocks of 256 bytes
(8 x 256 x 8)
• 2-wire serial interface bus, I²C™ compatible
• Functional address inputs for cascading up to
8 devices
• Schmitt trigger, filtered inputs for noise
suppression
• Output slope control to eliminate ground bounce
• 100 kHz (2.5V) and 400 kHz (5V) compatibility
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 16 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 guaranteed
• Data retention > 200 years
• 8-pin DIP, 8-lead SOIC packages
• Available temperature ranges:
- Commercial (C):
- Industrial (I):
0°C to +70°C
-40°C to +85°C
DESCRIPTION
The Microchip Technology Inc. 24LC164 is a cascad-
able 16 Kbit Electrically Erasable PROM (EEPROM).
The device is organized as eight blocks of 256 x 8-bit
memory with a 2-wire serial interface. Low voltage
design permits operation down to 2.5 volts with standby
and active currents of only 5 µA and 1 mA respectively.
The 24LC164 also has a page-write capability for up to
16 bytes of data. The 24LC164 is available in the stan-
dard 8-pin DIP and 8-lead surface mount SOIC pack-
ages.
The three select pins, A0, A1 and A2, function as chip
select inputs and allow up to eight devices to share a
common bus, for up to 128 Kbits total system
EEPROM.
I²C is a trademark of Philips Corporation.
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
A2 A1 A0
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
XDEC
SDA SCL
VCC
VSS
HV GENERATOR
EEPROM ARRAY
(8 x 256 x 8)
PAGE LATCHES
YDEC
SENSE AMP
R/W CONTROL
 2004 Microchip Technology Inc.
DS21093I-page 1