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PDF X25F087SI-5 Data sheet ( Hoja de datos )

Número de pieza X25F087SI-5
Descripción SPI SerialFlash with Block Lock TM Protection
Fabricantes Xicor 
Logotipo Xicor Logotipo



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8K
X25F087
1024 x 8 Bit
SPI SerialFlash with Block LockTM Protection
FEATURES
• 1MHz Clock Rate
• SPI Modes (0,0 & 1,1)
• 1024 x 8 Bits
—16 Byte Small Sector Program Mode
• Low Power CMOS
—<1µA Standby Current
—<3mA Active Current during Program
—<400µA Active Current during Read
• 1.8V to 3.6V or 5V “Univolt” Read and Program
Power Supply Versions
• Block Lock Protection
—Block Lock Protect 0, any 1/4, 1st 1/2, First or
Last Sector of SerialFlash Array
• Built-in Inadvertent Program Protection
—Power-Up/Power-Down Protection Circuitry
—Program Enable Latch
—Program Protect Pin
• Self-Timed Program Cycle
—5ms Program Cycle Time (Typical)
• High Reliability
—Endurance: 100,000 Cycles/Byte
—Data Retention: 100 Years
—ESD: 2000V on all pins
• 8-Lead SOIC Package
• 8-Lead TSSOP Package
• 8-Pin Mini-DIP Package
DESCRIPTION
The X25F087 is a CMOS 8k-bit SerialFlash, internally
organized as 1024 x 8. The X25F087 features a Serial
Peripheral Interface (SPI) and software protocol
allowing operation on a simple four-wire bus. The bus
signals are a clock input (SCK) plus separate data in (SI)
and data out (SO) lines. Access to the device is
controlled through a chip select (CS) input, allowing any
number of devices to share the same bus.
There are eight options for programmable, nonvolatile,
Block Lock Protection available to the end user. These
options are implemented via special instructions
programmed to the part. The X25F087 also features a
PP pin that can be used for hardwire protection of the
part, disabling all programming attempts, as well as a
Program Enable Latch that must be set before a program
operation can be initiated.
The X25F087 utilizes Xicor’s proprietary Direct WriteTM
cell, providing a minimum endurance of 100,000 cycles
per sector and a minimum data retention of 100 years.
FUNCTIONAL DIAGRAM
SI
SO
SCK
COMMAND
DECODE
AND
CONTROL
LOGIC
CS
X
DECODE
LOGIC
DATA REGISTER
Y DECODE LOGIC
16 8
32
SERIALFLASH
ARRAY
(1024 x 8)
PP PROGRAM CONTROL LOGIC
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
7007-0.7 5/8/97 T1/C0/D0 SH
1
HIGH VOLTAGE
CONTROL
7007 FRM 01
Characteristics subject to change without notice

1 page




X25F087SI-5 pdf
X25F087
Figure 3. Read Status Operation Sequence
CS
SCK
01234567
...
READ STATUS
INSTRUCTION
SI
NONVOLATILE WRITE IN PROGRESS
SO
...
...B B B
LL L
21 0
SO HIGH DURING
NONVOLATILE
WRITE CYCLE
SO = STATUS REG BIT
WHEN NO NONVOLATILE
WRITE CYCLE
7007 FRM 04
Figure 4. Program Enable/Program Disable Sequence
CS
SCK
SI
01234567
INSTRUCTION
(1 BYTE)
HIGH IMPEDANCE
SO
7007 FRM 05
5

5 Page





X25F087SI-5 arduino
X25F087
PACKAGING INFORMATION
8-LEAD PLASTIC, TSSOP, PACKAGE TYPE V
.025 (.65) BSC
.169 (4.3)
.177 (4.5) .252 (6.4) BSC
.114 (2.9)
.122 (3.1)
.0075 (.19)
.0118 (.30)
.047 (1.20)
.002 (.05)
.006 (.15)
0° – 8°
.019 (.50)
.029 (.75)
Detail A (20X)
.010 (.25)
Gage Plane
Seating Plane
See Detail “A”
.031 (.80)
.041 (1.05)
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
11

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