24AA32AF Datasheet, PDF (1/30 Pages) Microchip Technology – 32K I2C™ Serial EEPROM with Quarter-Array Write-Protect

24AA32AF/24LC32AF
32K I²C^™ Serial EEPROM with Quarter-Array Write-Protect
Device Selection Table
Part
Number
VCC
Range
Max. Clock
Frequency
24AA32AF 1.7-5.5 400 kHz⁽¹⁾
24LC32AF 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 1.7V for
24AA32AF devices, 2.5V for 24LC32AF devices
• Low-Power CMOS Technology:
- Read current 400 μA, max.
- Standby current 1 μA, max. (I-temp)
• 2-Wire Serial Interface, I²C™ Compatible
• Packages with 3 Address Pins are Cascadable up
to Eight Devices
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce
• 100 kHz and 400 kHz Clock Compatibility
• Page Write Time 5 ms max.
• Self-Timed Erase/Write Cycle
• 32-Byte Page Write Buffer
• Hardware Write-Protect for 1/4 Array
(C00h-FFFh)
• ESD Protection > 4,000V
• More than 1 Million Erase/Write Cycles
• Data Retention > 200 Years
• Factory Programming Available
• Packages Include 8-lead PDIP, SOIC, TSSOP,
MSOP, TDFN and 5-lead SOT-23
• Pb-Free and RoHS Compliant
• Temperature Ranges:
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
Description:
The Microchip Technology Inc. 24AA32AF/24LC32AF
(24XX32AF*) is a 32 Kbit Electrically Erasable PROM.
The device is organized as a single block of 4K x 8-bit
memory with a 2-wire serial interface. Low-voltage
design permits operation down to 1.7V, with standby
and read currents of only 1 μA and 400 μA,
respectively. It has been developed for advanced, low-
power applications such as personal communications
or data acquisition. The 24XX32AF also has a page
write capability for up to 32 bytes of data. Functional
address lines allow up to eight devices on the same
bus, for up to 256 Kbits address space. The 24XX32AF
is available in the standard 8-pin PDIP, surface mount
SOIC, TSSOP, TDFN and MSOP packages. The
24XX32AF is also available in the 5-lead SOT-23
package.
Block Diagram
A0 A1 A2 WP
HV Generator
I/O
Control
Logic
Memory
Control
Logic
XDEC
EEPROM
Array
Page Latches
I/O SCL
SDA
Vcc
VSS
YDEC
Sense Amp.
R/W Control
Package Types
PDIP, MSOP, SOIC, TSSOP
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
SOT-23
SCL 1
5 WP
VSS
2
SDA 3
4 VCC
TDFN
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
*24XX32AF is used in this document as a generic part number for the 24AA32AF/24LC32AF devices.
© 2009 Microchip Technology Inc.
DS22184A-page 1