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參數資料
| 型號： | X25045 |
| 英文描述： | Programmable Watchdog Supervisory E2PROM |
| 中文描述： | 可編程看門狗監控E2PROM的 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 93K |
| 代理商： | X25045 |
X25043/45
1
DESCRIPTION
The X25043/45 combines three popular functions,
Watchdog Timer, Voltage Supervision, and E
2
PROM in
a single package. This combination lowers the system
cost and reduces the board space requirements.
The Watchdog Timer provides an independent protec-
tion system for microcontrollers. During a system failure,
the X25043/45 watchdog will respond with a
RESET
/
RESET signal after a selectable time-out interval. The
user selects the interval from three preset values. Once
selected, the interval does not change, even after cy-
cling the power.
The system is protected from low voltage conditions by
the X25043/45 low V
CC
detection circuits. When V
CC
drops below the minimum V
CC
trip point, the system is
reset. Reset is asserted until V
CC
returns and stabilizes.
The memory portion of the X25043/45 is a CMOS 4096-
bit serial E
2
PROM, internally organized as 512 X 8. The
X25043/45 features a Serial Peripheral Interface (SPI)
and software protocol allowing operation on a simple
three-wire bus.
The X25043/45 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.
4K
X25043/45
512 x 8 Bit
Xicor, Inc. 1994, 1995, 1996 Patents Pending
3844-6.5 5/9/96 T4/C2/D2 NS
Characteristics subject to change without notice
Direct Write is a trademark of Xicor, Inc.
Programmable Watchdog Supervisory E
2
PROM
FEATURES
Programmable Watchdog Timer
Low V
CC
Detection
Reset Signal Valid to V
CC
= 1V
1MHz Clock Rate
512 X 8 Bits Serial E
2
PROM
—4 Byte Page Mode
Low Power CMOS
—50
μ
A Standby Current
—3mA Active Current
2.7V To 5.5V Power Supply
Block Lock
TM
—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
High Reliability
—Endurance: 100,000 cycles per byte
—Data Retention: 100 Years
—ESD protection: 2000V on all pins
Available Packages
—8-Lead PDlP
—8-Lead SOIC
—14-Lead TSSOP
X25043 = Active LOW
RESET
X25045 = Active HIGH RESET
DIE PHOTOGRAPH
A
PPLICATION
N
OTES
A V A I L A B L E
AN11 AN21
3844 ILL F01
SENSOR
PROGRAMMABLE
VOLTAGE
LOGIC
RESET
CONTROL
CONTROL
HIGH VOLTAGE GENERATOR
AND
2
4K BITS E
2
PROM
T
G
T
I
R
W
A
T
C
H
D
O
T
I
M
E
LOGIC
SERIAL
INTERFACE
相關PDF資料 |
PDF描述 |
|---|---|
| X25045P | Programmable Watchdog Supervisory E2PROM |
| X25045PI | Programmable Watchdog Supervisory E2PROM |
| X25045S | Programmable Watchdog Supervisory E2PROM |
| X25045SI | Programmable Watchdog Supervisory E2PROM |
| X25045V | Programmable Watchdog Supervisory E2PROM |
相關代理商/技術參數 |
參數描述 |
|---|---|
| X25045P | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Programmable Watchdog Supervisory E2PROM |
| X25045P-2.7 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Programmable Watchdog Supervisory E2PROM |
| X25045PI | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Programmable Watchdog Supervisory E2PROM |
| X25045PI-2.7 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Programmable Watchdog Supervisory E2PROM |
| X25045S | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Programmable Watchdog Supervisory E2PROM |
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