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X4005M8I-2.7 Datasheet

  • X4005M8I-2.7

  • CPU Supervisor

  • 17頁

  • INTERSIL   INTERSIL

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廬
X4003, X4005
Data Sheet
March 15, 2005
FN8113.0
CPU Supervisor
FEATURES
鈥?Selectable watchdog timer
鈥擲elect 200ms, 600ms, 1.4s, off
鈥?Low V
CC
detection and reset assertion
鈥擣ive standard reset threshold voltages
nominal 4.62V, 4.38V, 2.92V, 2.68V, 1.75V
鈥擜djust low V
CC
reset threshold voltage using
special programming sequence
鈥擱eset signal valid to V
CC
= 1V
鈥?Low power CMOS
鈥?2碌A typical standby current, watchdog on
鈥?00nA typical standby current watchdog off
鈥?mA active current
鈥?400kHz I
2
C interface
鈥?1.8V to 5.5V power supply operation
鈥?Available packages
鈥?-lead SOIC
鈥?-lead MSOP
DESCRIPTION
These devices combine three popular functions,
Power-on Reset Control, Watchdog Timer, and Supply
Voltage Supervision. This combination lowers system
cost, reduces board space requirements, and
increases reliability.
Applying power to the device activates the power-on
reset circuit which holds RESET/RESET active for a
period of time. This allows the power supply and oscilla-
tor to stabilize before the processor can execute code.
The Watchdog Timer provides an independent
protection mechanism for microcontrollers. When the
microcontroller fails to restart a timer within a select-
able time out interval, the device activates the
RESET/RESET signal. The user selects the interval
from three preset values. Once selected, the interval
does not change, even after cycling the power.
The device鈥檚 low V
CC
detection circuitry protects the
user鈥檚 system from low voltage conditions, resetting the
system when V
CC
falls below the minimum V
CC
trip
point. RESET/RESET is asserted until V
CC
returns to
proper operating level and stabilizes. Five industry stan-
dard V
TRIP
thresholds are available; however, Intersil鈥檚
unique circuits allow the threshold to be reprogrammed
to meet custom requirements, or to fine-tune the thresh-
old for applications requiring higher precision.
BLOCK DIAGRAM
Watchdog Transition
Detector
WP
SDA
Data
Register
Command
Decode &
Control
Logic
V
CC
Threshold
Reset logic
V
CC
V
TRIP
+
-
Power-on and
Low Voltage
Reset
Generation
Watchdog
Timer Reset
RESET (X4003)
Control
Register
Reset &
Watchdog
Timebase
RESET (X4005)
SCL
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

X4005M8I-2.7 產品屬性

  • 80

  • 集成電路 (IC)

  • PMIC - 監(jiān)控器

  • -

  • 簡單復位/加電復位

  • 1

  • 開路漏極或開路集電極

  • 高有效

  • 最小為 100 ms

  • 2.62V

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）

  • 8-MSOP

  • 管件

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