A24C1024
TWO-WIRE SERIAL EEPROM
1024K (131.072 X 8)
AiT Semiconductor Inc.
www.ait-ic.com
PIN DESCRIPTION
Top View
Symbol
Top View
Function
Pin #
I/O
1
2
3
4
5
6
7
8
NC
A1
-
Not connected
I
Device Address Input
Device Address Input
Ground
A2
I
GND
SDA
SCL
WP
VCC
-
I/O
Serial Address and Data input and Data out put
Serial Clock Input
I
I
-
Write Protect Input
Power Supply
Pin Descriptions
SCL
This input clock pin is used to synchronize the data transfer to and from the device.
SDA
The SDA is a bi-directional pin used to transfer addresses and data into and out of the device. The SDA pin is
an open drain output and can be wired with other open drain or open collector outputs. However, the SDA pin
requires a pull-up resistor connected to the power supply.
A1, A2
The A1 and A2 are the device address inputs.
Typically, the A1, and A2 pins are for hardware addressing and a total of 4 devices can be connected on a
single bus system. When A1 and A2 are left floating, the inputs are defaulted to zero.
WP
WP is the Write Protect pin. While the WP pin is connected to the power supply of A24C1024, the entire array
becomes Write Protected (i.e. the device becomes Read only). When WP is tied to Ground or left floating, the
normal write operations are allowed.
VCC
Supply voltage
GND
Ground of supply voltage
REV1.0
- JUN 2014 RELEASED -
- 2 -
AITSEMI [ AiT Semiconductor ]
