NJM#2102D NJR, NJM#2102D Datasheet

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NJM#2102D

Manufacturer Part Number
NJM#2102D
Description
Supervisory Circuits Signal Generator
Manufacturer
NJR
Datasheet

Specifications of NJM#2102D

Product Category
Supervisory Circuits
Rohs
yes
Mounting Style
Through Hole
Package / Case
DIP-8
Factory Pack Quantity
50

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■ GENERAL DESCRIPTION
which decays from the desired voltage and generate a warning signal.
And also, the NJM2102 holds the warning signal for a certain term
after the specified voltage is obtained or recovered. The other one
(Watch Dog Timer) is to identify missing clocks of microprocessors.
Therefore, it should be said that the NJM2102 is ideal to protect any
microprocessors from the fales operations induced by undesired
condition.
■ FEATURES
■ PIN CONFIGURATION
■ BLOCK DIAGRAM
Ver.2007-09-13
The NJM2102 Possesses two functions. One is to detect a voltage
● Internal Watch Dog Timer
● Precise Detection of Supply Voltage Down
● Package Outline
● Bipolar Technology
NJM2102D
NJM2102M
NJM2102L
SYSTEM RESET IC
(4.2V ±2.5%)
DIP8, DMP8, SIP8
PIN FUNCTION
1. CT
2. RESET
3. CK
4. GND
5. V
6. V
7. V
8.
RESET
+
REF
S
■ PACKAGE OUTLINE
NJM2102D
NJM2102L
NJM2102M
- 1 -

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NJM#2102D Summary of contents

Page 1

GENERAL DESCRIPTION The NJM2102 Possesses two functions. One is to detect a voltage which decays from the desired voltage and generate a warning signal. And also, the NJM2102 holds the warning signal for a certain term after the specified ...

Page 2

ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Input Voltage Input Voltage Power Dissipation Operating Temperature Range Storage Temperature Range ■ ELECTRICAL CHARACTERISTICS PARAMETER Operating Current Threshold Voltage 1 Threshold Voltage 2 Hysteresis Width Reference Voltage Operating Voltage Regulation Load Regulation ...

Page 3

TIMING CHART Ver.2007-09- ...

Page 4

TERMINAL FUNCTION PIN. NO SYMBOL RESET FUNCTION Pin Connection to Capacitor, Set the reset holding time Reset Output Clock Input INSIDE EQUIVALENT CIRCUIT Ver.2007-09-13 ...

Page 5

TERMINAL FUNCTION PIN. NO SYMBOL 4 GND + REF RESET Ver.2007-09-13 FUNCTION Ground Operating Voltage Ref Amp Output Comparator S Input Reset Output Internal pull up resistor INSIDE EQUIVALENT CIRCUIT - ...

Page 6

TYPICAL CHARACTERISTICS Operating Current vs. Operating Voltage Output Voltage vs. Operating Voltage Satulation Voltage vs. Output Sink Current - 6 - Output Voltage vs. Operating Voltage Detect Voltage vs. Ambient Temperature Satulation Voltage vs. Output Sink Current Ver.2007-09-13 ...

Page 7

TYPICAL CHARACTERISTICS High Level Output Voltage vs. High Level Output Current High Output Voltage vs. High Level Output Current Reference Voltage vs. Operating Voltage Ver.2007-09-13 Reference Voltage vs. Reference Current Reference Voltage vs. Ambient Temperature - 7 - ...

Page 8

TYPICAL CHARACTERISTICS Reset Hold Time at Transient Timing Capacitor C Timing Capacitor C Timing Capacitor C Timing Capacitor C 1 Watch Dog Timer observation time - (Sec) (Sec) (Sec) ...

Page 9

APPLICATION CIRCUIT 1. 5V Supply Voltage Supervisory and Watch-dog timer ● Voltage Supply is detected through V ● If minimum input pulse width T (Please refer to TYPICAL CHARACTERISTICS : Minimum Input Pulse Width Supply ...

Page 10

Compulsory Resetting attached (Reset Hold attached) ● *Pin grounded when SW. ON. RESET (8pin) become Low : RESET (pin2) become HIGH. ● By putting signal in the RESET pin, and Tr swich ON RESET pin become ...

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