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參數(shù)資料
| 型號(hào)： | X25021PI-2.7 |
| 英文描述： | SPI Serial E2PROM with Block LockTM Protection |
| 中文描述： | SPI串行E2PROM的保護(hù)與塊LockTM |
| 文件頁(yè)數(shù)： | 1/14頁(yè) |
| 文件大小： | 60K |
| 代理商： | X25021PI-2.7 |
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X25021
1
2K
X25021
256 x 8 Bit
Xicor, Inc. 1995, 1996 Patents Pending
6615-1.5 6/10/96 T3/C1/D0 NS
Characteristics subject to change without notice
Direct Write and Block Lock Protection is a trademark of Xicor, Inc.
SPI Serial E
2
PROM with Block Lock
TM
Protection
FEATURES
1MHz Clock Rate
SPI Modes (0,1 & 1,0)
256 X 8 Bits
—4 Byte Page Mode
Low Power CMOS
—10
μ
A Standby Current
—3mA Active Current
2.7V To 5.5V Power Supply
Block Lock Protection
—Protect 1/4, 1/2 or all of E
2
PROM Array
Built-in Inadvertent Write Protection
—Power-Up/Power-Down protection circuitry
—Write Latch
—Write Protect Pin
Self-Timed Write Cycle
—5ms Write Cycle Time (Typical)
High Reliability
—Endurance: 100,000 cycles per byte
—Data Retention: 100 Years
—ESD protection: 2000V on all pins
8-Lead PDlP Package
8-Lead SOIC Package
DESCRIPTION
The X25021 is a CMOS 2048-bit serial E
2
PROM, inter-
nally organized as 256 x 8. The X25021 features a Serial
Peripheral Interface (SPI) and software protocol allow-
ing operation on a simple three-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 con-
trolled through a chip select (
CS
) input, allowing any
number of devices to share the same bus.
The X25021 also features two additional inputs that
provide the end user with added flexibility. By asserting
the
HOLD
input, the X25021 will ignore transitions on its
inputs, thus allowing the host to service higher priority
interrupts. The
WP
input can be used as a hardwire input
to the X25021 disabling all write attempts, thus providing
a mechanism for limiting end user capability of altering
the memory.
The X25021 utilizes Xicor’s proprietary Direct Write
cell, providing a minimum endurance of 100,000 cycles
per byte and a minimum data retention of 100 years.
6615 FHD F01
FUNCTIONAL DIAGRAM
COMMAND
DECODE
AND
CONTROL
LOGIC
WRITE
CONTROL
AND
TIMING
LOGIC
WRITE
PROTECT
LOGIC
X DECODE
LOGIC
256 BYTE
ARRAY
16 X 32
Y DECODE
DATA REGISTER
16 X 32
32 X 32
SO
SI
SCK
CS
HOLD
WP
16
16
32
8
4
STATUS
REGISTER
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X25021SI-2.7 | SPI Serial E2PROM with Block LockTM Protection |
| X25021SI-3 | SPI Serial E2PROM with Block LockTM Protection |
| X25021S-2.7 | SPI Serial E2PROM with Block LockTM Protection |
| X25021S-3 | SPI Serial E2PROM with Block LockTM Protection |
| X25021P | SPI Serial E2PROM with Block LockTM Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X25021PI-3 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:SPI Serial E2PROM with Block LockTM Protection |
| X25021S | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:SPI Serial E2PROM with Block LockTM Protection |
| X25021S-2.7 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:SPI Serial E2PROM with Block LockTM Protection |
| X25021S-3 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:SPI Serial E2PROM with Block LockTM Protection |
| X25021SI | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:SPI Serial E2PROM with Block LockTM Protection |
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