24AA00_11 Datasheet, PDF (4/34 Pages) Microchip Technology – 128-Bit I2C™ Bus Serial EEPROM

24AA00/24LC00/24C00
2.0 PIN DESCRIPTIONS
Pin Function Table
Name
PDIP
SOIC TSSOP
DFN⁽¹⁾
TDFN⁽¹⁾ SOT-23
Description
NC
1, 2, 3 1, 2, 3 1, 2, 3
1, 2, 3
1, 2, 3
— Not Connected
VSS
SDA
SCL
WP
VCC
Note 1:
4
4
4
4
4
2
Ground
5
5
5
5
5
3
Serial Address/Data I/O
6
6
6
6
6
1
Serial Clock
7
7
7
7
7
5
Write-Protect Input
8
8
8
8
8
4
+1.8V to 5.5V Power Supply
The exposed pad on the DFN/TDFN packages can be connected to VSS or left floating.
2.1 SDA Serial Data
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 10 k for 100 kHz, 2 k for
400 kHz).
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.
2.2 SCL Serial Clock
This input is used to synchronize the data transfer from
and to the device.
2.3 Noise Protection
The SCL and SDA inputs have Schmitt Trigger and
filter circuits which suppress noise spikes to assure
proper device operation even on a noisy bus.
DS21178H-page 4
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