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參數(shù)資料
| 型號： | 935269148518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | 3.90 MM, PLASTIC, MS-012, SOT-96, SO-8 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大小： | 178K |
| 代理商： | 935269148518 |
Philips Semiconductors
Product data
NE56605-42
System reset with built-in watchdog timer
2
2001 Aug 22
853–2251 26949
GENERAL DESCRIPTION
The NE56605-42 is designed to generate a reset signal, at a
threshold voltage of 4.2 V, for a variety of microprocessor and logic
systems. Accurate reset signals are generated during momentary
power interruptions, or whenever power supply voltages sag to
intolerable levels. The NE56605-42 has a built-in Watchdog Timer to
monitor the microprocessor and ensure it is operating properly. Any
abnormal system operations due to microprocessor malfunctions
are terminated by the watchdog’s generating a system reset. The
NE56605-42 has a watchdog monitoring time of 10 ms (typical).
The NE56605-42 is offered in the SO8 surface mount package.
FEATURES
Both positive and negative logic reset output signals are available
Accurate threshold detection
Internal power-on reset delay
Internal watchdog timer programmable with external capacitor
Watchdog monitoring time of 10 ms
Reset assertion with V
CC down to 0.8 VDC (typical)
Few external components required.
APPLICATIONS
Microcomputer systems
Logic systems.
SIMPLIFIED SYSTEM DIAGRAM
SL01282
RESET
GENERATOR
PROGRAMMABLE
WATCHDOG TIMER
3
CLK
2
RESET
8
RESET
1
CT
VREF
4
GND
R
7
R
C
VS
6
WDC
VCC
5
GND
CLK
RESET
LOGIC
SYSTEM
NE56605-42
Figure 1. Simplified system diagram.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
TEMPERATURE
TYPE NUMBER
NAME
DESCRIPTION
RANGE
NE56605-42D
SO8
plastic small outline package; 8 leads; body width 3.9 mm
–20 to +70
°C
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