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MIC2789 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC2789 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 17 page MIC2788/MIC2789 Push-Button Reset IC MLF and MicroLeadFrame are registered trademarks of Amkor Technologies, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com October 2011 M9999-102711-A General Description The MIC2788/MIC2789 are low-current, ultra-small, push- button reset supervisors with long set-up delays. The devices feature two manual reset inputs and two reset outputs. The devices initiate a reset for the reset timeout period when the /MR0 and /MR1 inputs are asserted low for a period longer than the set-up delay. The two manual reset inputs and long set-up period help to avoid unintended system resets. Both manual reset inputs can be tied together if a single push-button reset is desired. The MIC2788 features integrated pull-up resistors on the /MR0 and /MR1 inputs, while the MIC2789 requires external pull-up resistors. The PDY input pin selects between a 2s, 4s or 6s set-up period. Factory-programmed reset timeout periods of 140ms (min.) and 240ms (min.) are available. An active-low, open-drain reset output (/RST) and an active-high, push-pull reset output (RSTP) provide flexibility when interfacing to various microcontrollers, PMICs, or load switches. The MIC2788/MIC2789 consume a quiescent current of only 2.9µA and are offered in a tiny, space-saving 8-pin thin MLF ® (2mm x 2mm x 0.55mm) package. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Features • 1.6V to 5.5V operating voltage • 2.9µA supply current when /MR0, /MR1 are not asserted • Asserting /MR0 and /MR1 for longer than set-up delay asserts reset output for the reset timeout period • Programmable delay (PDY) input selects 2.0s, 4.0s or 6.0s set-up delay • Factory-programmed 140ms (min.) or 240ms (min.) reset timeout period • Integrated /MR0, /MR1 pull-up resistors (MIC2788) • Dual Reset Outputs: − Open-drain active-low reset (/RST) output − Push-pull active-high reset (RSTP) output • −40°C to 85°C ambient operating temperature range • 8-pin 2mm x 2mm x 0.55mm thin MLF® package Applications • Smart phones • MP3 players • Portable navigation devices • Set-top boxes (STBs) • Tablets/pads _________________________________________________________________________________________________________________________ Typical Application |
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