欢迎访问ic37.com |
会员登录 免费注册
发布采购

X25040SI 参数 Datasheet PDF下载

X25040SI图片预览
型号: X25040SI
PDF下载: 下载PDF文件 查看货源
内容描述: SPI串行E2PROM带座LockTM保护 [SPI Serial E2PROM with Block LockTM Protection]
分类和应用: 可编程只读存储器
文件页数/大小: 14 页 / 63 K
品牌: XICOR [ XICOR INC. ]
 浏览型号X25040SI的Datasheet PDF文件第2页浏览型号X25040SI的Datasheet PDF文件第3页浏览型号X25040SI的Datasheet PDF文件第4页浏览型号X25040SI的Datasheet PDF文件第5页浏览型号X25040SI的Datasheet PDF文件第6页浏览型号X25040SI的Datasheet PDF文件第7页浏览型号X25040SI的Datasheet PDF文件第8页浏览型号X25040SI的Datasheet PDF文件第9页  
A
PPLICATION
N
OTES
A V A I L A B L E
AN9 •
X25040
AN18 • AN31 • AN37 • AN40
4K
X25040
SPI Serial E
2
PROM with Block Lock
TM
Protection
DESCRIPTION
512 x 8 Bit
FEATURES
1MHz Clock Rate
SPI Modes (0,0 & 1,1)
512 X 8 Bits
—4 Byte Page Mode
Low Power CMOS
—150
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
The X25040 is a CMOS 4096-bit serial E
2
PROM, inter-
nally organized as 512 x 8. The X25040 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 X25040 also features two additional inputs that
provide the end user with added flexibility. By asserting
the
HOLD
input, the X25040 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 X25040 disabling all write attempts, thus providing
a mechanism for limiting end user capability of altering
the memory.
The X25040 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.
FUNCTIONAL DIAGRAM
STATUS
REGISTER
WRITE
PROTECT
LOGIC
X DECODE
LOGIC
32
SO
SI
SCK
CS
HOLD
COMMAND
DECODE
AND
CONTROL
LOGIC
32
512 BYTE
ARRAY
32 X 32
32 X 32
64
64 X 32
WP
WRITE
CONTROL
AND
TIMING
LOGIC
4
8
Y DECODE
DATA REGISTER
6451 FHD F01
Characteristics subject to change without notice
Direct Write™ and Block Lock™ Protection is a trademark of Xicor, Inc.
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
6451-3.6 6/10/96 T5/C1/D0 NS
1