ne56605-42 NXP Semiconductors, ne56605-42 Datasheet - Page 2

• Manufacturer Part Number: ne56605-42
• Description: System Reset With Built-in Watchdog Timer
• Manufacturer: NXP Semiconductors

intolerable levels. The NE56605-42 has a built-in Watchdog Timer to
The NE56605-42 is offered in the 8-lead small outline surface mount
Philips Semiconductors
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
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).
package (SOP005).
FEATURES
SIMPLIFIED SYSTEM DIAGRAM
ORDERING INFORMATION
TYPE NUMBER
TYPE NUMBER
NE56605-42D
2003 Oct 15
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
Few external components required.
System reset with built-in watchdog timer
PACKAGE
NAME
SO8
CC
C
down to 0.8 V
V
S
7
DESCRIPTION
plastic small outline package; 8 leads; body width 3.9 mm
V
5
CC
R
R
DC
NE56605-42
(typical)
4 GND
V
REF
Figure 1. Simplified system diagram.
6 WD
WATCHDOG TIMER
PROGRAMMABLE
GENERATOR
C
1 C
2
RESET
T
APPLICATIONS
Microcomputer systems
Logic systems.
8
2
3
RESET
RESET
CLK
RESET
RESET
CLK
SYSTEM
LOGIC
GND
VERSION
SOP005
SL01282
NE56605-42
TEMPERATURE
RANGE
–20 to +70 C
Product data