24FC32-SLASHP datasheet(12/16 Pages) MICROCHIP

12 / 16 page

24FC32

DS21126E-page 12

 2004 Microchip Technology Inc.

8.0

PIN DESCRIPTIONS

8.1

A0, A1, A2 Chip Address Inputs

The A0..A2 inputs are used by the 24FC32 for multiple

device operation and conform to the two-wire bus

standard. The levels applied to these pins define the

address block occupied by the device in the address

map. A particular device is selected by transmitting the

corresponding bits (A2, A1, A0) in the control byte

(Figure 3-3).

8.2

SDA Serial Address/Data Input/

Output

This is a bidirectional pin used to transfer addresses

and data into and data out of the device. It is an open

drain terminal, therefore the SDA bus requires a pull-up

resistor to VCC (typical 2 K

Ω, must consider total bus

capacitance and maximum rise/fall times).

For normal data transfer SDA is allowed to change only

during SCL low. Changes during SCL high are

reserved for indicating the Start and Stop conditions.

8.3

SCL Serial Clock

This input is used to synchronize the data transfer from

and to the device.

24FC32-/P Datasheet(PDF) 12 Page - Microchip Technology