24AA044
4K I2C™ Serial EEPROM
Device Selection Table
Description:
Part
Max Clock
Frequency
Temp.
Range
The Microchip Technology Inc. 24AA044 is a 4 Kbit
Serial Electrically Erasable PROM with a voltage
range of 1.7V to 5.5V. The device is organized as two
blocks of 256 x 8-bit memory with a 2-wire serial
interface. Low-current design permits operation with
standby and active currents of only 1 A and 400 A,
respectively. The device has a page write capability for
up to 16 bytes of data. Functional address lines allow
the connection of up to four 24AA044 devices on the
same bus for up to 16K bits of contiguous EEPROM
memory. The device is available in the standard 8-pin
PDIP, 8-pin SOIC (3.90 mm), TSSOP, 2x3 UDFN and
MSOP packages.
VCC Range
Number
24AA044
1.7V-5.5V
1 MHz(1)
I, E
Note 1: 400 kHz for 1.8V ≤ VCC < 2.2V
100 kHz for VCC < 1.8V
Features:
• Single Supply with Operation from 1.7V to 5.5V
• Low-Power CMOS Technology:
- Read current 400 A, max
- Standby current 1 A, max at 85°C
• 2-Wire Serial Interface, I2C™ Compatible
• Cascadable up to Four Devices
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce
• 1 MHz, 400 kHz, and 100 kHz Clock Compatibility
• Page Write Time 5 ms Maximum
• Self-timed Erase/Write Cycle
Package Types
PDIP/SOIC/TSSOP/MSOP
UDFN
NC
A1
1
VCC
WP
8
7
6
5
NC
1
8
VCC
2
3
4
A1
A2
2
3
4
7
6
5
WP
SCL
SDA
A2
VSS
SCL
SDA
VSS
• 16-Byte Page Write Buffer
• Hardware Write-Protect
• ESD Protection >4,000V
Block Diagram
• More than 1 Million Erase/Write Cycles
• Data Retention >200 Years
A1A2
WP
HV Generator
• Factory Programming Available
• Packages include 8-lead PDIP, SOIC, TSSOP,
UDFN and MSOP
I/O
Control
Logic
Memory
Control
Logic
EEPROM
Array
• RoHS Compliant
XDEC
• Temperature Ranges:
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
SDA
SCL
Write-Protect
Circuitry
VCC
VSS
YDEC
Sense Amp.
R/W Control
2014 Microchip Technology Inc.
DS20005286A-page 1