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NE56604-42 PDF даташит

Спецификация NE56604-42 изготовлена ​​​​«NXP Semiconductors» и имеет функцию, называемую «System reset».

Детали детали

Номер произв NE56604-42
Описание System reset
Производители NXP Semiconductors
логотип NXP Semiconductors логотип 

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NE56604-42 Даташит, Описание, Даташиты
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INTEGRATED CIRCUITS
NE56604-42
System reset with built-in Watchdog timer
Product data
Supersedes data of 2001 Aug 22
2003 Oct 15
Philips
Semiconductors









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NE56604-42 Даташит, Описание, Даташиты
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Philips Semiconductors
System reset with built-in Watchdog timer
Product data
NE56604-42
GENERAL DESCRIPTION
The NE56604-42 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 NE56604-42 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 a system reset generated by the Watchdog. The
NE56604-42 has a Watchdog monitoring time of 100 ms (typical).
The NE56604-42 is offered in the SO8 surface mount package
(SOP005).
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 resistor
Watchdog monitoring time of 100 ms (typical)
Reset assertion with VCC down to 0.8 VDC (typical)
Few external components required.
APPLICATIONS
Microcomputer systems
Logic systems.
SIMPLIFIED SYSTEM DIAGRAM
VCC
5
RCT
VS 7
NE56604-42
R
R VREF
C
6 RCT
RESET
GENERATOR
PROGRAMMABLE
WATCHDOG TIMER
8 RESET
2 RESET
3 CLK
4 GND
1 CT
LOGIC
SYSTEM
RESET
RESET
CLK
GND
Figure 1. Simplified system diagram.
SL01281
2003 Oct 15
2









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NE56604-42 Даташит, Описание, Даташиты
www.DataSheet4U.com
Philips Semiconductors
System reset with built-in Watchdog timer
Product data
NE56604-42
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
TEMPERATURE
VERSION RANGE
NE56604-42D
SO8
plastic small outline package; 8 leads; body width 3.9 mm
SOP005 –20 to +70 °C
Part number marking
The package is marked with a four letter code in the first line to the
right of the logo. The first three letters designate the product. The
fourth letter, represented by ‘x’, is a date tracking code. The
remaining two or three lines of characters are internal manufacturing
codes.
PIN CONFIGURATION
CT 1
RESET 2
CLK 3
TOP VIEW
SO8
8 RESET
7 VS
6 RCT
GND 4
5 VCC
SL01280
Figure 2. Pin configuration.
Part number
NE56604-42
Marking
AAD x
PIN DESCRIPTION
PIN SYMBOL
1 CT
2 RESET
3 CLK
4 GND
5 VCC
6 RCT
7 VS
8 RESET
DESCRIPTION
tWDM, tWDR, tPR adjustment pin.
tWDM, tWDR, tPR times are dependent on the value of external CT capacitor used. See Figure 20 (Timing
Diagram) for definition of tWDM, tWDR, tPR times.
Reset HIGH output pin.
Clock input pin from logic system for Watchdog timer.
Circuit ground.
Power supply pin for circuit.
Watchdog timer control and program pin.
Serves to ENABLE the Watchdog function when connected to pull-up resistor (RCT) to VCC, and DISABLE
the Watchdog when connected to ground. Used in conjunction with CT pin to program tWDM time.
Detection threshold adjustment pin.
The detection threshold can be increased by connecting this pin to VCC with a pull-up resistor. The detection
threshold can be decreased by connecting this pin to ground with a pull-down resistor.
Reset LOW output pin.
2003 Oct 15
3










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