X24164
PIN DESCRIPTIONS
Serial Clock (SCL)
The SCL input is used to clock all data into and out of the
device.
Serial Data (SDA)
SDA is a bidirectional pin used to transfer data into and
out of the device. It is an open drain output and may be
wire-ORed with any number of open drain or open
collector outputs.
An open drain output requires the use of a pull-up
resistor. For selecting typical values, refer to the Pull-Up
Resistor selection graph at the end of this data sheet.
Device Select (S
0
,
S
1
, S
2
)
The device select inputs (S
0
,
S
1
, S
2
) are used to set the
second, third and fourth bits of the 8 bit slave address.
This allows up to eight X24164’s to share a common
bus. These inputs can be static or actively driven. If used
statically they must be tied to V
SS
or V
CC
as appropriate.
If actively driven, they must be driven to V
SS
or V
CC
. To
be compatible with the X24C16 these pins must all be
tied to V
SS
.
Pin Names
Symbol
S
0
–S
2
SDA
SCL
TEST
V
SS
V
CC
Description
Device Select Inputs
Serial Data
Serial Clock
Hold at V
SS
Ground
Supply Voltage
3846 PGM T01
PIN CONFIGURATION
DIP/SOIC
S0
S1
S2
VSS
1
2
3
4
X24164
8
7
6
5
VCC
TEST
SCL
SDA
3846 FHD F02
2
XICOR [ XICOR INC. ]
