24AA32| Datasheet

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Obsolete Device
Please use 24AA32A or 24AA65.

24AA32
32K 1.8V I2CTM Smart SerialTM EEPROM
FEATURES
Voltage operating range: 1.8V to 6.0V - Peak write current 3 mA at 6.0V - Maximum read current 150 uA at 6.0V - Standby current 1 uA typical Industry standard two-wire bus protocol, I2C compatible - Including 100 kHz (1.8V) and 400 kHz (5V) modes Self-timed ERASE and WRITE cycles Power on/off data protection circuitry Endurance: - 10,000,000 Erase/Write (E/W) cycles guaranteed for High Endurance Block - 1,000,000 E/W cycles guaranteed for Standard Endurance Block 8 byte page, or byte modes available 1 page x 8 line input cache (64 bytes) for fast write loads Schmitt trigger, filtered inputs for noise suppression Output slope control to eliminate ground bounce 2 ms typical write cycle time, byte or page Factory programming (QTP) available Up to 8 devices may be connected to the same bus for up to 256K bits total memory Electrostatic discharge protection > 4000V Data retention > 200 years 8-pin PDIP/SOIC packages Temperature ranges - Commercial (C): 0 C to +70 C PDIP A0 A1 A2 VS
S 1 2 3 4 24AA32 8 7 6 5 VCC NC SCL SDA

SOIC A0 A1 A2 VSS 1 2 3 4
24AA32

8 7 6 5

VCC NC SCL SDA

BLOCK DIAGRAM
A0 A1 A2 HV GENERATOR

DESCRIPTION
The Microchip Technology Inc. 24AA32 is a 4K x 8 (32K bit) Serial Electrically Erasable PROM capable of operation across a broad voltage range (1.8V to 6.0V). This device has been developed for advanced, low power applications such as personal communications or data acquisition. The 24AA32 features an input cache for fast write loads with a capacity of eight 8-byte pages, or 64 bytes. It also features a fixed 4K bit block of ultra-high endurance memory for data that changes frequently. The 24AA32 is capable of both random and sequential reads up to the 32K boundary. Functional address lines allow up to eight 24AA32 devices on the same bus, for up to 256K bits address space.

I/O CONTROL LOGIC

MEMORY CONTROL LOGIC

XDEC

EEPROM ARRAY PAGE LATCHES

I/O

SCL

CACHE

SDA VCC VSS

YDEC

SENSE AMP R/W CONTROL

Advanced CMOS technology and broad voltage range make this device ideal for low-power/low voltage, nonvolatile code PACKAGE TYPEsand data applications. The 24AA32 is available in the standard 8-pin plastic DIP and 8-pin surface mount SOIC package.

I2C is a trademark of Philips Corporation. Smart Serial is a trademark of Microchip Technology Inc.

2004 Microchip Technology Inc.

DS21124E-page 1