TC1232 TelCom Semiconductor, TC1232 Datasheet
TC1232
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TC1232 Summary of contents
Page 1
... ST input. Should the processor fail to supply this signal within the selected time-out period (150msec, 600msec or 1200msec), an out-of-control pro- cessor is indicated and the TC1232 issues a processor reset as a result. The outputs of the TC1232 are immediately driven active when the PB input is brought low by an external push- button switch or other electronic signal ...
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... TC1232 ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin (With Respect to GND) – 0.3V to +5.8V Operating Temperature Range: TC1232C .......................................... +70 C TC1232E ..................................... – Storage Temperature Range ................ – +150 C Lead Temperature (Soldering, 10 sec) ................. +300 C DC ELECTRICAL CHARACTERISTICS: Symbol Parameter V Supply Voltage and PB RST ...
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... SOIC Wide RST RST RST TC1232COE 12 TC1232EOE TOL GND 150msec for TD = 1.2sec for for 10 sec nsec msec ...
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... V of electrical noise on V falls below 4.75 may require a 0. 0.1 F bypass capacitor to reduce CC detection sensitivity. This capacitor should be installed as close to the TC1232 as possible to keep the capacitor lead the RST length short. CC, has been CC the push-button delay ...
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... TD PIN = OPEN 250msec 600msec 500msec 1200msec TD PIN = V CC Figure 4. Strobe Input TELCOM SEMICONDUCTOR, INC RST V CC MAX 250msec 1000msec 2000msec TC1232 t F +4.75V +4.25V Figure 5. Power-Down Slew Rate t R +4.75V +4.25V Figure 6. Power-Up Slew Rate 5-23 ...
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... TC1232 +4.5V (5% TRIP POINT) +4.25V (10% TRIP POINT) RST RST V SLEW RATE = 1.66mV/ sec (0.5V/300 sec) CC Figure 7. V Detect Reset Output Delay (Power-Down) CC 5-24 MICROPROCESSOR MONITOR RPD RST RST Figure 8. V 4.6V (5% TRIP POINT) 4.5V(10% TRIP POINT) t RPU Detect Reset Output Delay (Power-Up) CC TELCOM SEMICONDUCTOR, INC ...