ADM802 Analog Devices, ADM802 Datasheet
ADM802
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ADM802 Summary of contents
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... V. On the ADM690A/ADM802L/ADM805L the reset voltage threshold is 4. the ADM692A/ADM802M/ ADM805M, the reset voltage threshold is 4.40 V. The ADM802L/ADM802M guarantee power fail accuracies to 2%. REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use ...
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... ADM690A/ADM692A/ADM802L/M/ADM805L/M–SPECIFICATIONS ( 5.5 V (ADM690A/ADM802L/ADM805L unless otherwise noted) Parameter OPERATION CC BATT V Operating Voltage Range CC Supply Current (Excludes I ) OUT Supply Current in Battery Backup Mode Battery Standby Current (+ = Discharge, – = Charge) V Output Voltage OUT V in Battery Backup Mode OUT Battery Switchover Threshold ...
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... CC 2. The watchdog timer is not serviced within its timeout period (1.6 seconds) The reset threshold is typically 4.65 V for the ADM690A/ADM802L/ADM805L and 4.4 V for the ADM692A/ ADM802M/ADM805M. RESET remains low for 200 ms after V goes low for 200 ms if the watchdog timer is enabled but not serviced within its timeout period. ...
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... ADM690A/ADM692A/ADM802L/M/ADM805L/M Typical Performance Curves 3 2.75 2.5 2. – mA OUT Figure 1. Output Voltage vs. Load Current in Battery Backup 100 90 PFO 10 1.3V 0% PFI 1.2V 200mV Figure 2. Power Fail Comparator Response Time + 100 RESET Figure 3. ADM690A RESET Response Time 5.00 4.98 4. 9.3 4.88 OUT 4 ...
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... The guaranteed minimum and maximum thresholds are as follows: ADM690A/ADM802L/ADM805L: 4.5 V and 4.75 V ADM692A: 4.25 V and 4.5 V. ADM802L: 4.55 V and 4.7 V ADM802M: 4.3 V and 4.45 V The ADM805L and ADM805M contain an active high reset output. This is the complement of RESET and is intended for processors requiring an active high RESET signal. ...
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... ADM690A/ADM692A/ADM802L/M/ADM805L/M Table I. Input and Output Status in Battery Backup Mode Signal Status connected to V OUT OUT BATT PMOS switch. RESET Logic low. RESET Logic high (ADM805L, ADM805M). The open circuit output voltage is equal to V PFI The power fail comparator is disabled PFO Logic low ...
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... Figure 13. TO STATIC RAM TO µP –7– should be con- BATT should be connected to V OUT CC is present. Since V is above the floating BATT BUFFERED RESET + ADM690A ADM692A ADM802L µP ADM802M RESET RESET GND GND Figure 13. Bidirectional Reset . ...
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... ADM690A/ADM692A/ADM802L/M/ADM805L/M OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Pin Plastic DIP (N-8) 0.430 (10.92) 0.348 (8.84 0.280 (7.11) 0.240 (6.10 0.325 (8.25) 0.300 (7.62) 0.060 (1.52) PIN 1 0.015 (0.38) 0.210 (5.33) MAX 0.130 0.160 (4.06) (3.30) MIN 0.115 (2.93) SEATING 0.100 0.022 (0.558) 0.070 (1.77) PLANE (2.54) 0.014 (0.356) 0.045 (1.15) BSC 8-Lead SOIC (SO-8) 0.1968 (5.00) ...