 2004 Microchip Technology Inc.

DS21125E-page 1

FEATURES

• Voltage operating range: 4.5V to 5.5V

- Maximum write current 3 mA at 5.5V

- Maximum read current 150

µA at 5.5V

- Standby current 1

µA 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

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

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

- Commercial (C):

0°C to +70°C

- Industrial (I):

-40°C to +85°C

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.

24FC65

PACKAGE TYPES

BLOCK DIAGRAM

A0

A1

A2

1

2

3

4

8

7

6

5

NC

SCL

SDA

A0

A1

A2

1

2

3

4

8

7

6

5

NC

SCL

SDA

PDIP

SOIC

HV GENERATOR

EEPROM

ARRAY

PAGE LATCHES

YDEC

XDEC

SENSE AMP

R/W CONTROL

MEMORY

CONTROL

LOGIC

I/O

CONTROL

LOGIC

SDA

SCL

I/O

A2

A1

A0

CACHE

Smart Serial is a trademark of Microchip Technology Inc.

Obsolete Device