MAX6443 MAXIM [Maxim Integrated Products], MAX6443 Datasheet
MAX6443
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MAX6443 Summary of contents
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... The MAX6449/MAX6450 have two delayed manual reset inputs. The MAX6451/MAX6452 have one delayed and one immediate manual reset input. The MAX6443–MAX6452 have an active-low RESET with push-pull or open-drain output logic options. These devices, offered in small SOT packages, are fully guar- anteed over the extended temperature range (-40°C to +85° ...
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Reset Circuits with Long Manual Reset Setup Period ABSOLUTE MAXIMUM RATINGS All Voltages Referenced to GND V ..........................................................................-0.3V to +6V CC Open-Drain RESET ..................................................-0.3V to +6V Push-Pull RESET ........................................-0. MR1, MR2, MR2, RSTIN ..........................................-0.3V to +6V Input ...
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Reset Circuits with Long Manual Reset ELECTRICAL CHARACTERISTICS (continued 1.0V to 5.5V -40°C to +85°C, unless otherwise specified. Typical values are PARAMETER SYMBOL MR2 Minimum Setup Period Pulse Width MR2 Glitch ...
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... RESET OCCURS ABOVE THE CURVE 100 4. 200 400 600 800 1000 RESET THRESHOLD OVERDRIVE (mV) RSTIN TO RESET DELAY vs. TEMPERATURE (RSTIN FALLING) 24.0 RSTIN FALLING AT 1mV/µs 23.6 23.2 22.8 22.4 22.0 21.6 21.2 20.8 20.4 20.0 -40 - TEMPERATURE (°C) MAX6443/52 toc08 V = 4.392V TH V (100mV/div 4.3V CC RESET (2V/div) ...
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... Detailed Description The reset output is typically connected to the reset input of a microprocessor (µP). A µP’s reset input starts or restarts the µ known state. The MAX6443– MAX6452 µP supervisory circuits provide the reset logic to prevent code-execution errors during power- up, power-down and brownout conditions (see the Typical Operating Circuit) ...
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... RESET deasserts. The high-to-low transition on MR2 input is internally debounced for 210ms to ensure that 6 _______________________________________________________________________________________ MR1 SETUP PERIOD 6.72s MR1 RESET Figure 1. MAX6443/MAX6444 Manual Reset Timing Diagram MR1 6.72s MR2 RESET Figure 2. MAX6445/MAX6446/MAX6449/MAX64450 Manual Reset Timing Diagram there are no false RESET assertions when MR2 is dri- ven from high to low (Figure 4) ...
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... To minimize data loss and speed system recovery, many applications interrupt the processor or reset only portions of the system before a processor hard reset is asserted. The extended setup time of the MAX6443– MAX6452 manual reset inputs allows the same push- button (connected to both the processor interrupt and the extended MR1 input, as shown in Figure 6) to con- trol both the interrupt and hard reset functions ...
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Reset Circuits with Long Manual Reset Setup Period +3.3V +1.5V V RESET CC MAX6451 RSTIN MR1 MR2 GND SMART CARD DETECT: IMMEDIATE ONE-SHOT WHEN MANUAL RESET CLOSES Figure 7. MAX6451/MAX6452 Application Circuit a microprocessor for general-purpose I/O control. MR2 ...
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... Chip Information TRANSISTOR COUNT: 1384 PROCESS: BiCMOS _______________________________________________________________________________________ Table 1. Reset Voltage Threshold PART NO. SUFFIX 100kΩ Table 2. Standard Versions Table PART MAX6443US16L MAX6443US23L MAX6443US26L MAX6443US29L MAX6443US46L MAX6444US16L MAX6444US23L MAX6444US26L MAX6444US29L MAX6444US46L MAX6445UK16L MAX6445UK23L MAX6445UK26L MAX6445UK29L MAX6445UK46L MAX6446UK16L MAX6446UK23L ...
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Reset Circuits with Long Manual Reset Setup Period TOP VIEW RESET 1 2 GND MR1 3 RESET 1 GND 2 MR1 3 Ordering Information (continued) PART TEMP RANGE MAX6445 UK_ _L -T -40°C to +85°C MAX6446 UK_ _L -T ...
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... MAX6443– MAX6452 RESET TIMEOUT PERIOD (210ms typ) MANUAL RESET SETUP PERIOD 0.63V (6.72s typ GND MR1 MR2 MAX6445 MAX6446 MAX6449 MAX6450 ...
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Reset Circuits with Long Manual Reset Setup Period (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ Package Information ...
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Reset Circuits with Long Manual Reset (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other ...