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MAX801MCSA Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX801MCSA Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 12 page 8-Pin µP Supervisory Circuits with ±1.5% Reset Accuracy _______________________________________________________________________________________ 7 _________________________________________________Pin Description (continued) Active-High Reset Output. RESET is the inverse of RESET. It is a CMOS output that sources and sinks current. RESET swings between VCC and GND. — 5 Chip-Enable Output. Output to the chip-enable gating circuit. CE OUT is pulled up to the higher of VCC or VBATT when the chip-enable gate is disabled. 5 — Watchdog Input. If WDI remains high or low longer than the watchdog timeout period (typically 1.6sec), RESET will be asserted for 200ms. Leave unconnected to disable the watchdog function. — 6 Chip-Enable Input 6 — RESET CE OUT WDI CE IN BATT OUT Backup-Battery Input. When VCC falls below the reset threshold and VBATT, OUT switch- es from VCC to BATT. VBATT may exceed VCC. The battery can be removed while the MAX801/MAX808 is powered up, provided BATT is bypassed with a 0.1µF capacitor to GND. If no battery is used, connect BATT to ground and VCC to OUT. 7 7 Output Supply Voltage to CMOS RAM. When VCC exceeds the reset threshold or VBATT, OUT connects to VCC. When VCC falls below the reset threshold and VBATT, OUT con- nects to BATT. Bypass OUT with a 0.1µF capacitor to GND. 8 8 NAME MAX801 MAX808 FUNCTION PIN MAX801 MAX808 CE IN GND VCC BATT THE HIGHER OF VCC OR VBATT MAX801 ONLY MAX808 ONLY BATTERY-BACKUP COMPARATOR RESET COMPARATOR LOW-LINE COMPARATOR 2.275V OUT LOWLINE WDI RESET (MAX801 ONLY) RESET CE OUT P P N WATCHDOG TRANSITION DETECTOR STATE MACHINE OSCILLATOR Figure 1. Functional Diagram |
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Similar Description - MAX801MCSA |
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