MAX6854 MAXIM [Maxim Integrated Products], MAX6854 Datasheet
MAX6854
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MAX6854 Summary of contents
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... The MAX6854/MAX6855/MAX6856/MAX6858/MAX6860– MAX6869 are offered in a variety of configurations (see the Selector Guide). The MAX6854/MAX6855/MAX6856/ MAX6861–MAX6869 provide a manual reset input, MR. The MAX6864–MAX6869 offer a watchdog timer that monitors activity at the WDI input to prevent code execu- tion errors. The MAX6864– ...
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Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer ABSOLUTE MAXIMUM RATINGS , Open-Drain RESET to GND ..........................-0.3V to +6. MR, Push-Pull RESET, RESET, WDI, CT, I.C............................................-0. Input Current, Output Current (all pins)............................±20mA Continuous Power ...
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Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer ELECTRICAL CHARACTERISTICS (continued 1.2V to 5.5V -40°C to +85°C, unless otherwise specified. Typical values are PARAMETER SYMBOL RESET Output Voltage CT Input ...
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Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer (V = +2.5V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 10 2.23V +85° +25°C A 1.0 ...
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... V = 1.8V CC 0.25 0. 3.3V CC 0.15 0.10 0. 200 400 600 800 I (µA) SOURCE MAX6854 toc11 V CC 200mV/div RESET 1V/div SUPPLY CURRENT vs. WATCHDOG SWITCHING FREQUENCY 100 0.1 1000 10 100 1k 10k 100k WATCHDOG SWITCHING FREQUENCY (Hz) MANUAL RESET DELAY MAX6854 toc12 MR 1V/div t MRD RESET 1V/div 200ns/div 1M 10M 5 ...
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... V CC capacitor to GND. 6 _______________________________________________________________________________________ MAX6854/MAX6855/MAX6856 Pin Description Active-Low Open-Drain or Push-Pull Reset Output. RESET transitions from high to drops below the selected reset threshold pulled low. low when V CC RESET remains low for the reset timeout period after V reset threshold and MR deasserts. Push-pull RESET outputs are referenced to ...
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Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer PIN NAME MAX6861/ MAX6862 MAX6863 GND RESET 4 — — 4 RESET _______________________________________________________________________________________ MAX6861/MAX6862/MAX6863 Pin Description FUNCTION Reset ...
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Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer PIN NAME MAX6864/ MAX6865 MAX6866 RESET 1 — — 1 RESET 8 _______________________________________________________________________________________ MAX6864/MAX6865/MAX6866 Pin Description Active-Low Open-Drain or Push-Pull Reset Output. ...
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Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer PIN NAME MAX6867/ MAX6868 MAX6869 1 1 WDI 2 2 GND RESET 4 — — 4 RESET _______________________________________________________________________________________ MAX6867/MAX6868/MAX6869 Pin Description FUNCTION Watchdog ...
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... RESET* MR *RESET IS THE INVERSE OF RESET. 2. RESET Timing Relationship Figure 10 ______________________________________________________________________________________ MAX6854 MAX6855 MAX6856 MAX6858 MAX6860– MAX6869 RESET TIMEOUT GENERATOR 1.25V WATCHDOG WATCHDOG TRANSITION TIMER DETECTOR GND MRD t MPW RESET (MAX6854/MAX6856/MAX6858/ MAX6860/MAX6861 MAX6863/MAX6864/MAX6866/ MAX6867/MAX6869) RESET (MAX6855/MAX6862/MAX6865/ MAX6868) CT (MAX6861/MAX6862/MAX6863 ...
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... Manual Reset Input Many µP-based products require manual reset capabil- ity, allowing the operator, a test technician, or external logic circuitry to initiate a reset. The MAX6854/ MAX6855/MAX6856/MAX6861–MAX6869 feature an MR input. A logic low on MR asserts a reset. Reset remains asserted while MR is low and for the timeout , after MR returns high ...
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... Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer Transient Immunity In addition to issuing a reset to the µP during power-up, power-down, and brownout conditions, the MAX6854/ MAX6855/MAX6856/MAX6858/MAX6860–MAX6869 are relatively immune to short-duration supply transients, or glitches. The Maximum V Transient Duration vs. Reset CC Threshold Overdrive graph in the Typical Operating Characteristics shows this relationship ...
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Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer input at different points in the program, rather than pulsing the watchdog input high-low-high or low-high- low. This technique avoids a stuck loop, in which the watchdog timer would continue ...
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... 150 225 D4 1200 1800 D5 300 450 D6 600 900 Table 5. Standard Versions PART MAX6854UK16D3 MAX6854UK23D3 MAX6854UK26D3 MAX6854UK29D3 MAX6854UK31D3 MAX6856UK16D3 MAX6856UK23D3 MAX6856UK26D3 MAX6856UK29D3 MAX6856UK31D3 MAX6861UK17 MAX6861UK225 MAX6861UK26 MAX6861UK29 MAX6862UK17 MAX6862UK225 MAX6862UK26 MAX6862UK29 MAX6863UK17 MAX6863UK225 MAX6863UK26 MAX6863UK29 MAX6864UK16D3S MAX6864UK23D3S MAX6864UK26D3S MAX6864UK29D3S MAX6864UK31D3S ...
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... Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer TOP VIEW RESET (RESET) MAX6854 GND 2 MAX6855 MAX6856 GND SOT23 ( ) MAX6855 ONLY RESET 1 (RESET) 2 GND MAX6865 ONLY ______________________________________________________________________________________ I. MAX6858 I.C. 2 MAX6860 GND 3 4 RESET SOT23 5 V WDI ...
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... Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer PART PUSH-PULL ACTIVE LOW MAX6854 MAX6855 — MAX6856 — MAX6858 MAX6860 — MAX6861 MAX6862 — MAX6863 — MAX6864 MAX6865 — MAX6866 — MAX6867 MAX6868 — MAX6869 — 16 ______________________________________________________________________________________ RESET OUTPUT PUSH-PULL ...
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Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of ...