AT24C164-10PI_ データシートの表示（PDF） - Atmel Corporation

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AT24C164-10PI_

2-Wire Serial CMOS E2PROM 16K (2048 x 8)

Atmel Corporation 

Absolute Maximum Ratings*

Operating Temperature................... -55°C to +125°C

Storage Temperature...................... -65°C to +150°C

Voltage on Any Pin

with Respect to Ground ..................... -0.1V to +7.0V

Maximum Operating Voltage ........................... 6.25V

DC Output Current ......................................... 5.0 mA

Block Diagram

*NOTICE: Stresses beyond those listed under “Absolute Maxi-

mum Ratings” may cause permanent damage to the device.

This is a stress rating only and functional operation of the

device at these or any other conditions beyond those indi-

cated in the operational sections of this specification is not

implied. Exposure to absolute maximum rating conditions

for extended periods may affect device reliability.

Pin Description

SERIAL CLOCK (SCL): The SCL input is used to positive

edge clock data into each E2PROM device and negative

edge clock data out of each device.

SERIAL DATA (SDA): The SDA pin is bidirectional for

serial data transfer. This pin is open-drain driven and may

be wire-ORed with any number of other open-drain or

open collector devices.

DEVICE SELECT (A2, A1, A0): The A2, A1 and A0 pins

are device address inputs that may be hardwired or ac-

tively driven to VDD or VSS. These inputs allow the selec-

tion for one of eight possible devices sharing a common

bus. The AT24C164 can be made compatible with the

AT24C16 by tying A2, A1 and A0 to VSS. Device address-

ing is discussed in detail in the device addressing section.

WRITE PROTECT (WP): The write protect input, when

tied low to GND, allows normal write operations. When

WP is tied high to VCC, all write operations to the memory

are inhibited.

Memory Organization

The AT24C164 is internally organized with 256 pages of

8-bytes each. Random word addressing requires an 11

bit data word address.

2-40

AT24C164

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