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TC1278 Fiches technique(PDF) 5 Page - Microchip Technology |
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TC1278 Fiches technique(HTML) 5 Page - Microchip Technology |
5 / 12 page © 2007 Microchip Technology Inc. DS21384D-page 5 TC1278/TC1279 3.0 APPLICATIONS INFORMATION 3.1 Operation – Power Monitor The TC1278/TC1279 provide the function of detecting out-of-tolerance power supply conditions and warning a processor-based system of impending power failure. When VCC is detected as out-of-tolerance, the RESET signal is asserted. On power-up, RESET is kept active for approximately 350 ms after the power supply has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. FIGURE 3-1: TC1279 Power Up Timing Diagram. FIGURE 3-2: TC1279 Power-Down Timing Diagram. FIGURE 3-3: TC1278 Power-Up Timing Diagram. FIGURE 3-4: TC1278 Power-Down Timing Diagram. 4.75V 4.00V tR VCCTP VCC RESET tRPU1 VOH VCC RESET 4.75V VCCTP 4.00V VOL tRPD1 tF tR tRPU2 VOL VCCTP VCC RESET VCCTP(MAX) VCCTP(MIN) tF tRPD2 VCC 4.74V VOH RESET VCCTP 4.00V RESET SLEWS WITH VCC |
Numéro de pièce similaire - TC1278_07 |
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Description similaire - TC1278_07 |
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