SYSTEM RESET IC - New Japan Radio
Description
NJM2102
SYSTEM RESET IC
■ 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 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.
■ PACKAGE OUTLINE
NJM2102D (DIP8)
NJM2102M (DMP8)
■ FEATURES ● Internal Watch Dog Timer ● Precise Detection of Supply Voltage Down ● Package Outline ● Bipolar Technology
(4.
2V ±2.
5%) DIP8, DMP8, SIP8
NJM2102L (SIP8)
■ PIN CONFIGURATION
NJM2102D NJM2102M
NJM2102L
■ BLOCK DIAGRAM
PIN FUNCTION
1.
CT 2.
RESET
3.
CK
4.
GND 5.
V+
6.
VREF 7.
VS 8.
RESET
Ver.
2013-03-06
-1-
NJM2102
■ ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage
SYMBOL V+
Input Voltage Input Voltage
VS VCK
Power Dissipation
PD
Operating Temperature Range Storage Temperature Range
Topr Tstg
RATINGS
20.
0 V++0.
3 (<20.
0)
20.
0 (DIP8) 500 (DMP8) 300 (SIP8) 800
-40 to +85 -40 to +125
(Ta=25°C)
UNIT V V V
mW
°C °C
■ ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
Supply Current Detection Voltage 1 Detection Voltage 2 Hysteresis Width Reference Voltage Supply Voltage Regulation Reference Voltage Load Regulation CK Input Threshold Voltage CK Input Current 1 CK Input Current 2 CT Charge Current 1 CT Charge Current 2 CT Discharge Current 1 CT Discharge Current 2
ICC VSL VSH VHYS VREF ∆VREF1 ∆VREF2 VTH IIH IIL ICTC1 ICTC2 ICTD1 ICTD2
High Level Output Voltage 1
VOH1
High Level Output Voltage 2 Output Saturation Voltage 1
VOH2 VOL1
Output Saturation Voltage 2
Output Saturation Voltage 3 Output Saturation Voltage 4
Output Sink Current 1
VOL2 VOL3 VOL4 IOL1
Output Sink Current 2
IOL2
RESET Minimum Supply Voltage 1 RESET Minimum Supply Voltage 2
VCCL1 VCCL2
CONDITION ...
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