X24F064/032/016
Xicor SerialFlash Memories are designed and tested for
applications requiring extended endurance. Inherent
data retention is greater than 100 years.
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
0
, S
1
, S
1
, S
2
, S
2
)
The device select inputs are used to set the device
select bits of the 8-bit slave address. This allows
multiple devices 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 with CMOS levels (driven
to V
CC
or V
SS
).
Program Protect (PP)
The program protect input controls the hardware
program protect feature. When held LOW, hardware
program protection is disabled and the X24F064/
032/016 can be programmed normally. When this
input is held HIGH, and the PPEN bit in the
program protect register is set HIGH, program
protection is enabled, and nonvolatile writes are
disabled to the selected blocks as well as the
program protect register itself.
PIN NAMES
Symbol
S
0
,
S
0
, S
1
,
S
1
, S
2
,
S
2
SDA
SCL
PP
V
SS
V
CC
NC
20-LEAD TSSOP
NC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
VCC
PP
NC
NC
NC
SCL
SDA
NC
NC
S0
S1
S2
VSS
1
2
3
4
8
7
6
5
VCC
PP
SCL
SDA
PIN CONFIGURATION
14-LEAD TSSOP
S
0
S
1
NC
NC
NC
S
2
VSS
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VCC
PP
NC
NC
NC
SCL
SDA
X24F016
8-LEAD DIP & SOIC
14-LEAD TSSOP
S
0
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VCC
PP
NC
NC
NC
SCL
SDA
X24F032
8-LEAD DIP & SOIC
S0
S1
S2
VSS
1
2
3
4
8
7
6
5
VCC
PP
SCL
SDA
S
1
NC
NC
NC
S
2
VSS
X24F064
8-LEAD DIP & SOIC
NC
S
1
S
2
VSS
1
2
3
4
8
7
6
5
VCC
PP
SCL
SDA
NC
S
1
NC
NC
NC
S
2
VSS
NC
NC
6686 ILL F02.4
Description
Device Select Inputs
Serial Data
Serial Clock
Program Protect
Ground
Supply Voltage
No Connect
6686 FRM T01.1
2
XICOR [ XICOR INC. ]
