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X24F032 Datasheet Preview

X24F032 Datasheet

32K SerialFlash Memory

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APPLICATION NOTE
A V A I LABLE
AN76 • AN78 • AN81 • AN87
64K/32K/16K
X24F064/032/016
8K/4K/2K x 8 Bit
SerialFlashMemory with Block LockProtection
FEATURES
• 1.8V to 3.6V or 5V “Univolt” Read and Program
Power Supply Versions
• Low Power CMOS
—Active read current less than 1mA
—Active program current less than 3mA
—Standby current less than 1µA
• Internally Organized 8K/4K/2K x 8
• New Programmable Block Lock Protection
—Software write protection
—Programmable hardware write protect
• Block Lock (0, 1/4, 1/2, or all of the Flash Memory
Array)
• 2 Wire Serial Interface
• Bidirectional Data Transfer Protocol
• 32 Byte Sector Programming
• Self Timed Program Cycle
—Typical programming time of 5ms per sector
• High Reliability
—Endurance: 100,000 cycles per byte
—Data retention: 100 years
• Available Packages
—8-lead PDIP
—8-lead SOIC (JEDEC)
—14-lead TSSOP (X24F032/016)
—20-lead TSSOP (X24F064)
DESCRIPTION
The X24F064/032/016 is a CMOS SerialFlash Memory
Family, internally organized 8K/4K/2K x 8. The family
features a serial interface and software protocol allow-
ing operation on a simple two wire bus.
Device select inputs (S0, S1, S2) allow up to eight
devices to share a common two wire bus.
A Program Protect Register accessed at the highest
address location, provides three new programming pro-
tection features: Software Programming Protection, Block
Lock Protection, and Hardware Programming Protection.
The Software Programming Protection feature prevents
any nonvolatile writes to the device until the WEL bit in
the program protect register is set. The Block LockTM Pro-
tection feature allows the user to individually protect four
blocks of the array by programming two bits in the pro-
gramming protect register. The Programmable Hardware
Program Protect feature allows the user to install each
device with PP tied to VCC, program the entire memory
array in place, and then enable the hardware program-
ming protection by programming a PPEN bit in the pro-
gram protect register. After this, selected blocks of the
array, including the program protect register itself, are
permanently protected from being programmed.
Xicor SerialFlash Memories are designed and tested for
applications requiring extended endurance. Inherent
data retention is greater than 100 years.
BLOCK DIAGRAM
SDA
Data Register
Sector Decode Logic
SCL
S0/S0
S1/S1
S2/S2
Command
Decode
and
Control Logic
X
Decode
Logic
Program
Protect
Register
32 8
Sectored
Memory
Array
PP
SerialFlashMemory and Block Lock
Protection are trademarks of Xicor, Inc.
©Xicor, Inc. 2000 Patents Pending
6686-3.8 10/27/00 EP
Programming Control Logic
High Voltage
Control
Characteristics subject to change without notice. 1 of 17




Xicor

X24F032 Datasheet Preview

X24F032 Datasheet

32K SerialFlash Memory

No Preview Available !

X24F064/032/016
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 col-
lector 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 (S0, S0, S1, S1, S2, S2)
The device select inputs are used to set the device
select bits of the 8-bit slave address. This allows multi-
ple devices to share a common bus. These inputs can
be static or actively driven. If used statically they must
be tied to VSS or VCC as appropriate. If actively driven,
they must be driven with CMOS levels (driven to VCC
or VSS).
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
S0, S0, S1, S1, S2, S2
SDA
SCL
PP
VSS
VCC
NC
Description
Device Select Inputs
Serial Data
Serial Clock
Program Protect
Ground
Supply Voltage
No Connect
PIN CONFIGURATION
X24F016
8-Lead DIP & SOIC
S0 1
S1 2
S2 3
VSS 4
8 VCC
7 PP
6 SCL
5 SDA
14-Lead TSSOP
S0 1
S1 2
NC 3
NC 4
NC 5
S2 6
VSS 7
14 VCC
13 PP
12 NC
11 NC
10 NC
9 SCL
8 SDA
X24F032
8-Lead DIP & SOIC
S0 1
S1 2
S2 3
VSS 4
8 VCC
7 PP
6 SCL
5 SDA
14-Lead TSSOP
S0 1
S1 2
NC 3
NC 4
NC 5
S2 6
VSS 7
14 VCC
13 PP
12 NC
11 NC
10 NC
9 SCL
8 SDA
X24F064
8-Lead DIP & SOIC
NC 1
S1 2
S2 3
VSS 4
8 VCC
7 PP
6 SCL
5 SDA
20-Lead TSSOP
NC 1
NC 2
S1 3
NC 4
NC 5
NC 6
S2 7
NC 8
NC 9
NC 10
20 PP
19 VCC
18 PP
17 NC
16 NC
15 NC
14 SCL
13 SCL
12 NC
11 NC
Characteristics subject to change without notice. 2 of 17


Part Number X24F032
Description 32K SerialFlash Memory
Maker Xicor
Total Page 17 Pages
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