24FC65| Datasheet

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Obsolete Device

24FC65
64K 5.0V 1 MHz I2CTM Smart SerialTM EEPROM
FEATURES
Voltage operating range: 4.5V to 5.5V - Maximum write current 3 mA at 5.5V - Maximum read current 150 uA at 5.5V - Standby current 1 uA typical 1 MHz SE2.bus two wire protocol Up to eight devices may be connected to the same bus for up to 512K bits total memory Programmable block security options Programmable endurance options Schmitt trigger inputs for noise suppression Self-timed ERASE and WRITE cycles Power on/off data protection circuitry Endurance: - 10,000,000 E/W cycles guaranteed for a 4K block - 1,000,000 E/W cycles guaranteed for a 60K block Variable page size up to 64 bytes 8 byte x 8 line input cache (64 bytes) for fast write loads <3 ms typical write cycle time, byte or page Electrostatic discharge protection > 4000V Data retention > 200 years 8-pin PDIP/SOIC packages Temperature ranges - Commercial (C): 0 C to +70 C - Industrial (I): -40 C to +85 C

PACKAGE TYPES
PDIP A0 A1 A2 VSS 1 2 3 4 24FC65 8 7 6 5 VCC NC SCL SDA

SOIC A0 A1 A2 VSS 1 2 3 4
24FC65

8 7 6 5

VCC NC SCL SDA

BLOCK DIAGRAM
A0 A1 A2 HV GENERATOR

DESCRIPTION
The Microchip Technology Inc. 24FC65 is a "smart" 8K 8x 8 Serial Electrically Erasable PROM (EEPROM) with a high-speed 1MHz SE2.bus whose protocol is functionally equivalent to the industry-standard I2C bus. This device has been developed for advanced applications such as personal communications, and provides the systems designer with flexibility through the use of many new user-programmable features. The 24FC65 offers a relocatable 4K-bit block of ultra-high-endurance memory for data that changes frequently. The remainder of the array, or 60K bits, is rated at 1,000,000 ERASE/WRITE (E/W) cycles guaranteed. The 24FC65 features an input cache for fast write loads with a capacity of eight pages, or 64 bytes. This device also features programmable security options for E/W protection of critical data and/or code of up to fifteen 4K blocks. Functional

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

address lines allow the connection of up to eight 24FC65's on the same bus for up to 512K bits contiguous EEPROM memory. The 24FC65 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.

DS21125E-page 1