MAX793/MAX794/MAX795 3.0V/3.3V Adjustable Microprocessor Supervisory Circuits General Description
... Note 7: OUT switches from BATT to VCC when VCC rises above the reset threshold, if VBATT > VRST. In this case, switchover back to VCC occurs at the exact voltage that causes reset to be asserted, however, switchover occurs 200ms prior to reset. If VBATT < VRST, OUT switches from BATT to VCC when VCC ...
... Note 7: OUT switches from BATT to VCC when VCC rises above the reset threshold, if VBATT > VRST. In this case, switchover back to VCC occurs at the exact voltage that causes reset to be asserted, however, switchover occurs 200ms prior to reset. If VBATT < VRST, OUT switches from BATT to VCC when VCC ...
MAX690T/S/R, 704T/S/R, 802T/S/R, 804–806T/S/R 3.0V/3.3V Microprocessor Supervisory Circuits _______________General Description ____________________________Features
... Reset Threshold The MAX690T/MAX704T/MAX805T are intended for 3.3V systems with a ±5% power-supply tolerance and a 10% system tolerance. Except for watchdog faults, reset will not assert as long as the power supply remains above 3.15V (3.3V - 5%). Reset is guaranteed to assert before the power supply ...
... Reset Threshold The MAX690T/MAX704T/MAX805T are intended for 3.3V systems with a ±5% power-supply tolerance and a 10% system tolerance. Except for watchdog faults, reset will not assert as long as the power supply remains above 3.15V (3.3V - 5%). Reset is guaranteed to assert before the power supply ...
MAX792/MAX820 Microprocessor and Nonvolatile Memory Supervisory Circuits General Description
... First choose the desired maximum current through the voltage divider (IMAX) when VCC is at its highest (VCC MAX). There are two things to consider here. First, IMAX contributes to the overall supply current for the circuit, so you would generally make it as small as possible. Second, IMAX cannot be ...
... First choose the desired maximum current through the voltage divider (IMAX) when VCC is at its highest (VCC MAX). There are two things to consider here. First, IMAX contributes to the overall supply current for the circuit, so you would generally make it as small as possible. Second, IMAX cannot be ...
MAX6854/MAX6855/MAX6856/MAX6858/MAX6860–MAX6869 Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer General Description
... MAX6869 µP supervisory circuits assert a reset to prevent code-execution errors during power-up, power-down, and brownout conditions. The MAX6854/MAX6855/MAX6856/ MAX6858/MAX6860–MAX6869 reset output is guaranteed to be valid for VCC down to 1.1V. Whenever VCC falls below the reset threshold, the re ...
... MAX6869 µP supervisory circuits assert a reset to prevent code-execution errors during power-up, power-down, and brownout conditions. The MAX6854/MAX6855/MAX6856/ MAX6858/MAX6860–MAX6869 reset output is guaranteed to be valid for VCC down to 1.1V. Whenever VCC falls below the reset threshold, the re ...
MAX814/MAX815/MAX816 ±1% Accuracy, Low-Power, +3V and +5V µP Supervisory Circuits _______________General Description
... thresholds, signified by the first suffix letter in the part number (see Figure 7 for more information on reset ranges). The MAX816 has an adjustable reset threshold. MAX814/MAX815 K-suffix parts have a minimum reset threshold set to 4.75V, worst case. They are intended for 5.0V systems with a ±4% o ...
... thresholds, signified by the first suffix letter in the part number (see Figure 7 for more information on reset ranges). The MAX816 has an adjustable reset threshold. MAX814/MAX815 K-suffix parts have a minimum reset threshold set to 4.75V, worst case. They are intended for 5.0V systems with a ±4% o ...
MAX6746–MAX6753 µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay General Description
... The MAX6746–MAX6753 assert a reset signal whenever the VCC supply voltage or RESET IN falls below its reset threshold. The reset output remains asserted for the reset timeout period after VCC and RESET IN rise above its respective reset threshold. A watchdog timer triggers a reset pulse whenever a w ...
... The MAX6746–MAX6753 assert a reset signal whenever the VCC supply voltage or RESET IN falls below its reset threshold. The reset output remains asserted for the reset timeout period after VCC and RESET IN rise above its respective reset threshold. A watchdog timer triggers a reset pulse whenever a w ...
MAX6301–MAX6304 +5V, Low-Power µP Supervisory Circuits with Adjustable Reset/Watchdog _______________General Description
... mode, a 1µF capacitor gives a watchdog timeout period of 22 minutes (see the Extended-Mode Watchdog Timeout Period vs. C SWT graph in the Typical ...
... mode, a 1µF capacitor gives a watchdog timeout period of 22 minutes (see the Extended-Mode Watchdog Timeout Period vs. C SWT graph in the Typical ...
MAX706P/R/S/T +3V Voltage Monitoring, Low-Cost µP Supervisory Circuits General Description
... watchdog circuit monitor the µP’s activity. If the µP does not toggle the watchdog input (WDI) within 1.6s, the watchdog output (WDO) goes low (Figure 4). If the reset signal is asserted, the watchdog timer will be reset to zero and disabled. As soon as reset is released, the timer starts counting. ...
... watchdog circuit monitor the µP’s activity. If the µP does not toggle the watchdog input (WDI) within 1.6s, the watchdog output (WDO) goes low (Figure 4). If the reset signal is asserted, the watchdog timer will be reset to zero and disabled. As soon as reset is released, the timer starts counting. ...
MAX6443–MAX6452 µP Reset Circuits with
... input with extended setup period (MR1). The MAX6445/ MAX6446 and MAX6449/MAX6450 include two manual reset inputs (MR1 and MR2) with extended setup periods. For dual MR1, MR2 devices, both inputs must be held low simultaneously for the extended setup period (tMR) before the reset output is pulse asse ...
... input with extended setup period (MR1). The MAX6445/ MAX6446 and MAX6449/MAX6450 include two manual reset inputs (MR1 and MR2) with extended setup periods. For dual MR1, MR2 devices, both inputs must be held low simultaneously for the extended setup period (tMR) before the reset output is pulse asse ...
MAX6412–MAX6420 Low-Power, Single/Dual
... In addition to issuing a reset to the μP during power-up, power-down, and brownout conditions, these supervisors are relatively immune to short-duration negative-going transients (glitches). The Maximum Transient Duration vs. Reset Threshold Overdrive graph in the Typical Operating Characteristics s ...
... In addition to issuing a reset to the μP during power-up, power-down, and brownout conditions, these supervisors are relatively immune to short-duration negative-going transients (glitches). The Maximum Transient Duration vs. Reset Threshold Overdrive graph in the Typical Operating Characteristics s ...
MAX6412–MAX6420 Low-Power, Single/Dual-Voltage µP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay General Description
... In addition to issuing a reset to the µP during power-up, power-down, and brownout conditions, these supervisors are relatively immune to short-duration negative-going transients (glitches). The Maximum Transient Duration vs. Reset Threshold Overdrive graph in the Typical Operating Characteristics s ...
... In addition to issuing a reset to the µP during power-up, power-down, and brownout conditions, these supervisors are relatively immune to short-duration negative-going transients (glitches). The Maximum Transient Duration vs. Reset Threshold Overdrive graph in the Typical Operating Characteristics s ...
MAX6841–MAX6845 Ultra-Low-Voltage µP Reset Circuits and
... known state. The MAX6841–MAX6845 assert a reset during power-up, power-down, and brownout conditions. When the VCC supply voltage falls below a preset threshold (MAX6841/MAX6842) or RESET IN falls below the adjustable threshold (MAX6843/MAX6844/MAX6845), reset asserts and stays asserted for a fixed ...
... known state. The MAX6841–MAX6845 assert a reset during power-up, power-down, and brownout conditions. When the VCC supply voltage falls below a preset threshold (MAX6841/MAX6842) or RESET IN falls below the adjustable threshold (MAX6843/MAX6844/MAX6845), reset asserts and stays asserted for a fixed ...
MAX6365–MAX6368 SOT23, Low-Power µP Supervisory Circuits with Battery Backup and Chip-Enable Gating
... maintain data or low-power operation for CMOS RAM, CMOS µPs, real-time clocks, and other digital logic when the main supply fails. 3) Provide memory write protection through internal chip-enable gating during supply or processor faults. 4) Include one of the following options: a manual reset input ( ...
... maintain data or low-power operation for CMOS RAM, CMOS µPs, real-time clocks, and other digital logic when the main supply fails. 3) Provide memory write protection through internal chip-enable gating during supply or processor faults. 4) Include one of the following options: a manual reset input ( ...
MAX6826 Dual Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
... period. The internal 1.6s timer can be cleared by either a reset pulse or by toggling WDI. The WDI can detect pulses as short as 50ns. While reset is asserted, the timer remains cleared and does not count. As soon as reset is released, the timer starts counting (Figure 4). Disable the watchdog funct ...
... period. The internal 1.6s timer can be cleared by either a reset pulse or by toggling WDI. The WDI can detect pulses as short as 50ns. While reset is asserted, the timer remains cleared and does not count. As soon as reset is released, the timer starts counting (Figure 4). Disable the watchdog funct ...
MAX6701–08/MAX6701A–03A/05A–07A Low-Voltage, SOT23 µP Supervisors with Power- General Description
... The MAX6701–MAX6708 microprocessor (µP) supervisory circuits reduce the complexity and components required to monitor power-supply functions in µP systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX6701–MAX6708 family ...
... The MAX6701–MAX6708 microprocessor (µP) supervisory circuits reduce the complexity and components required to monitor power-supply functions in µP systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX6701–MAX6708 family ...
MAX16056–MAX16059 125nA Supervisory Circuits with Capacitor- Adjustable Reset and Watchdog Timeouts General Description
... 6-Pin TDFN ...................................................................42°C/W 8-Pin TDFN ...................................................................41°C/W Junction-to-Case Thermal Resistance (θJC) (Note 1) 6-Pin TDFN .................................................................... ...
... 6-Pin TDFN ...................................................................42°C/W 8-Pin TDFN ...................................................................41°C/W Junction-to-Case Thermal Resistance (θJC) (Note 1) 6-Pin TDFN .................................................................... ...
MAX6340/ MAX6421–MAX6426 Low-Power, SC70/SOT µP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay
... factory-trimmed reset thresholds from 1.575V to 5.0V in approximately 0.1V increments. Insert the desired nominal reset threshold suffix (from Table 1) into the blanks. There are 50 standard versions with a required order increment of 2500 pieces. Sample stock is generally held on standard versions ...
... factory-trimmed reset thresholds from 1.575V to 5.0V in approximately 0.1V increments. Insert the desired nominal reset threshold suffix (from Table 1) into the blanks. There are 50 standard versions with a required order increment of 2500 pieces. Sample stock is generally held on standard versions ...
MAX6453–MAX6456 µP Supervisors with Separate V Reset and Manual Reset Outputs
... When VCC falls below 1V, RESET current-sinking capabilities decline drastically. The high-impedance CMOSlogic inputs connected to RESET can drift to undetermined voltages. This presents no problem in most applications, because most µPs and other circuitry do not operate with VCC below 1V. In applica ...
... When VCC falls below 1V, RESET current-sinking capabilities decline drastically. The high-impedance CMOSlogic inputs connected to RESET can drift to undetermined voltages. This presents no problem in most applications, because most µPs and other circuitry do not operate with VCC below 1V. In applica ...
MAX6832–MAX6840 Ultra-Low-Voltage SC70 Voltage Detectors and µP Reset Circuits General Description
... open-drain active-low reset output requires a pullup resistor that can be connected to a voltage higher than VCC. The MAX6835/MAX6836/MAX6837 feature a debounced manual reset input (MR), while the MAX6838/MAX6839/ MAX6840 provide a RESET-IN input allowing the user to externally adjust the reset thre ...
... open-drain active-low reset output requires a pullup resistor that can be connected to a voltage higher than VCC. The MAX6835/MAX6836/MAX6837 feature a debounced manual reset input (MR), while the MAX6838/MAX6839/ MAX6840 provide a RESET-IN input allowing the user to externally adjust the reset thre ...
MAX16122–MAX16125 Dual Pushbutton Controllers in Tiny 6-Bump WLP Package General Description
... The MAX16122–MAX16125 pushbutton controllers with single-supply monitors monitor one or two pushbuttons and generate a hard reset signal if the buttons are pushed and held for a setup delay. These devices make it easy to “hide” the hard reset function in an existing pushbutton, such as a soft power ...
... The MAX16122–MAX16125 pushbutton controllers with single-supply monitors monitor one or two pushbuttons and generate a hard reset signal if the buttons are pushed and held for a setup delay. These devices make it easy to “hide” the hard reset function in an existing pushbutton, such as a soft power ...
MAX6821–MAX6825 Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer General Description
... Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer The MAX6821–MAX6825 are low-voltage microprocessor (µP) supervisory circuits that combine voltage monitoring, watchdog timer, and manual reset input functions in a 5-pin SOT23 package. Microprocessor supervisory circuits significa ...
... Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer The MAX6821–MAX6825 are low-voltage microprocessor (µP) supervisory circuits that combine voltage monitoring, watchdog timer, and manual reset input functions in a 5-pin SOT23 package. Microprocessor supervisory circuits significa ...
MAX6381–MAX6390 SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits General Description
... thresholds, the reset output asserts and remains asserted for a minimum reset timeout period after VCC rises above the reset threshold. Reset thresholds are available from +1.58V to +4.63V, in approximately 100mV increments. Seven minimum reset timeout delays ranging from 1ms to 1200ms are available ...
... thresholds, the reset output asserts and remains asserted for a minimum reset timeout period after VCC rises above the reset threshold. Reset thresholds are available from +1.58V to +4.63V, in approximately 100mV increments. Seven minimum reset timeout delays ranging from 1ms to 1200ms are available ...
MAX6361–MAX6364 SOT23, Low-Power µP Supervisory Circuits with Battery Backup General Description
... The graph was produced using negative-going VCC pulses, starting at VCC and ending below the reset threshold by the magnitude indicated (reset threshold overdrive). The graph shows the maximum pulse width that a negative-going VCC transient can typically have without triggering a reset pulse. As the ...
... The graph was produced using negative-going VCC pulses, starting at VCC and ending below the reset threshold by the magnitude indicated (reset threshold overdrive). The graph shows the maximum pulse width that a negative-going VCC transient can typically have without triggering a reset pulse. As the ...
MAX6305–MAX6313 5-Pin, Multiple-Input, Programmable Reset ICs General Description
... The MR pin has internal ESD-protection circuitry that may be forward biased under certain conditions, drawing excessive current. For example, assume the circuitry driving MR uses a +5V supply other than VCC. If VCC drops or browns out lower than +4.7V, MR’s absolute maximum rating is violated (-0.3V ...
... The MR pin has internal ESD-protection circuitry that may be forward biased under certain conditions, drawing excessive current. For example, assume the circuitry driving MR uses a +5V supply other than VCC. If VCC drops or browns out lower than +4.7V, MR’s absolute maximum rating is violated (-0.3V ...
