MITSUBISHIAna. INTERFACE>
M5295AL/P/FP
WATCHDOG TIMER
DESCRIPTION
M5295A is a semiconductor integrated circuit which is designed for System Reset to detect +5V power supply. This IC keeps the operation microcomputer watching. When the system is abnormal,it generates Reset output until the system returns to normal states of the System. It is possible to vary the two detective voltage by connecting the resistor,so it is suitable to high quality and high performance system.
PIN CONFIGURATION (TOP VIEW)
8 7 6 5 4 3 2 1
ADJ2 RST2 Vcc ADJ1 GND RST1 TC WD
FEATURES
•Watch Dog Timer •Power on Reset Timer •Low circuit current 0. 8mA(Typ,Vcc=5V) •Wide Range of power supply
Outline 8P5(AL) WD TC RST1
1 2 3 4 8 7 6 5
APPLICATION
Microcomputer Systems
ADJ2 RST2 Vcc ADJ1
RECOMMENDED OPERATING CONDITIONS
Supply voltage. . . 4V to 15V Rated supply voltage. . . . 5V
GND
Outline 8P4(AP) 8P2S-A(AFP)
BLOCK DIAGRAM
49. 6k
51. 2k
F. F F. F
+
-
+
+
-
20. 4k
18. 8k
W. D. T F. F
20k 30k 1. 24V
REFERENCE VOLTAGE GENERATOR CIRCUIT
1 WD
2 TC
3 RST1
4 GND
5 ADJ1
6 Vcc
7 RST2
8 ADJ2
MITSUBISHI ELECTRIC
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MITSUBISHIAna. INTERFACE>
M5295AL/P/FP
WATCHDOG TIMER
ABSOLUTE MAXIMUM RATINGS (Ta=25°C,unless otherwise noted)
Symbol Vcc VIN VOUT IOUT Pd K Topr Tstg Parameter Supply voltage Input voltage Output voltage Output current Power dissipation Thermal derating Operating temperature Storage temperature Ta≥25°C Conditions Ratings 15 -10 to +10 15 10 800(SIP)/625(DIP)/440(FP) 8(SIP)/6. 25(DIP)/4. 4(FP) -20 to +75 -55 to +125 Unit V V V mA mW mW/°C °C °C
ELECTRICAL CHARACTERISTICS (Ta=25°C,Vcc=5V,unless otherwise noted) (1)DC FEATURES
Symbol IIH IIL VIH VIL IOUT IIN VVH3(H) VVH3(L) VOL ILEAK VTH1 VTH2(H) VTH2(L) ∆VTH2 V5 V8 RST1 RST2 Icc ADJ1 voltage ADJ2 voltage RST1 on voltage RST2 on voltage Circuit current ADJ1 ADJ2 RST1 RST2 Vcc Vcc=1. 2V,RL=4. 7k Vcc=1. 2V,RL=4. 7k 0. 8 Vcc detective voltage(2) ...
M5295AL PDF File
