STM6505

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Dual push-button Smart Reset with user-adjustable setup delays

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Product overview

Description

STM6502 has two combined Smart Reset inputs (SR0and SR1) with delayed Smart Reset setup time (tSRC) programmed by an external capacitor on the SRC pin.

STM6503 is similar to STM6502, has two combined delayed Smart Reset inputs (SR0, SR1) and three user-selectable delayed Smart Reset setup time (tSRC) options of 2 s, 6 s and 10 s through a three-state TSR input pin: when connected to ground, tSRC= 2 s; when left open, tSRC= 6 s; when connected to VCC, tSRC= 10 s (all the times are minimum).

STM6504 has two independent Smart Reset inputs. SR0provides the delayed Smart Reset setup time (tSRC) function with three user-selectable tSRCoptions through a three-state TSR input pin: when connected to ground, tSRC= 2 s; when left open, tSRC= 6 s; when connected to VCC, tSRC= 10 s (all the times are minimum). SRE provides instant reset. SRE is edge-triggered with a special debounce time (tDEBOUNCE= 240 ms min.) at the falling edge after a valid reset period.

STM6505 has two combined delayed Smart Reset inputs (SR0, SR1) and provides an adjustable reset delay setup time via an external capacitor connected to the SRC pin. The RSToutput depends also on the VCCmonitoring threshold. STM6505 also provides independent low battery detect (BLD) output controlled by the secondary external input voltage VBAT. VBATis monitored for low voltage and provides an indication on the battery low detect output pin (BLD). VBATthreshold is 1.25 V, fixed, and an external resistor divider is to be used to set the actual battery voltage threshold. VBATthreshold hysteresis is 8 mV typ. (16 mV max.). VBATis voltage monitoring input only, the device is powered only from the VCCpin; VCCmust be ≥ 1.575 V for proper operation of the VBATcomparator.

  • All features

    • Dual Smart Reset push-button inputs with extended reset setup delay
    • Adjustable Smart Reset setup delay (tSRC): by external capacitor or three-state logic (product options): tSRC= 2, 6, 10 s (min.)
    • Power-on reset
    • SingleRSToutput, active-low, open-drain
    • Factory-programmable thresholds to monitor VCCin the range of 1.575 to 4.625 V typ.
    • Operating voltage 1.0 V (active-low output valid) to 5.5 V
    • Low supply current
    • Operating temperature:industrial grade –40 °C to +85 °C
    • TDFN8 package: 2 mm x 2 mm x 0.75 mm
    • RoHS compliant

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STMicroelectronics - STM6505

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM6505WCABDG6F
Active
DFN-8L P 0.5 mm Industrial Ecopack3

STM6505WCABDG6F

Package:

DFN-8L P 0.5 mm

Material Declaration**:

Marketing Status

Active

Package

DFN-8L P 0.5 mm

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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STM6505WCABDG6F
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STM6505WCABDG6F

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Reset pulse width (mS) (min):

240

Reset pulse width (mS) (max):

480

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