AT24C164

2

Block Diagram

Pin Description

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

edge clock data into each EEPROM 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 actively

driven to V

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 V

in detail in the device addressing section.

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

low to GND, allows normal write operations.

Memory Organization

The AT24C164 is internally organized with 256 pages of

8 bytes each. Random word addressing requires an 11 bit

data word address.

Absolute Maximum Ratings*

Operating Temperature .................................. -55

°C to +125°C

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam-

age to the device. This is a stress rating only and

functional operation of the device at these or any

other conditions beyond those indicated in the

operational sections of this specification is not

implied. Exposure to absolute maximum rating

conditions for extended periods may affect device

reliability.

Storage Temperature ..................................... -65

°C to +150°C

Voltage on Any Pin

with Respect to Ground .....................................-1.0V to +7.0V

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

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

WP