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X40030S14-C Datasheet(PDF) 1 Page - Intersil Corporation |
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X40030S14-C Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 24 page 1 ® FN8114.1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005-2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. PRELIMINARY X40030, X40031, X40034, X40035 Triple Voltage Monitor with Integrated CPU Supervisor FEATURES • Triple voltage detection and reset assertion —Standard reset threshold settings see selection table on page 5. —Adjust low voltage reset threshold voltages using special programming sequence —Reset signal valid to VCC = 1V —Monitor three seperate voltages • Fault detection register • Selectable power on reset timeout (0.05s, 0.2s, 0.4s, 0.8s) • Selectable watchdog timer interval (25ms, 200ms, 1.4s or off) • Debounced manual reset input • Low power CMOS —25µA typical standby current, watchdog on —6µA typical standby current, watchdog off • 400kHz 2-wire interface • 2.7V to 5.5V power supply operation • Available in 14 Ld SOIC, TSSOP packages • Monitor voltages: 5V to 0.9V • Independent core voltage monitor • Pb-free plus anneal available (RoHS compliant) APPLICATIONS • Communication equipment —Routers, hubs, switches —Disk arrays, network storage • Industrial systems —Process control —Intelligent instrumentation • Computer systems —Computers —Network servers DESCRIPTION The X40030, X40031, X40034, X40035 combine power-on reset control, watchdog timer, supply voltage supervision, second and third voltage supervision, and manual reset, in one package. This combination lowers system cost, reduces board space requirements, and increases reliability. Applying voltage to VCC activates the power on reset cir- cuit which holds RESET/RESET active for a period of time. This allows the power supply and system oscillator to stabilize before the processor can execute code. Low VCC detection circuitry protects the user’s system from low voltage conditions, resetting the system when VCC falls below the minimum VTRIP1 point. RESET/RESET is active until VCC returns to proper operating level and stabilizes. A second and third voltage monitor circuit tracks the unregulated supply to provide a power fail warning or monitors different power supply voltage. Three common low voltage combinations are available, however, Intersil’s unique circuits allows the threshold for either voltage monitor to be reprogrammed to meet specific system level requirements or to fine-tune the threshold for applications requiring higher precision. BLOCK DIAGRAM V3FAIL V2FAIL WDO MR LOWLINE RESET RESET X40030/34 X40031/35 V3 Monitor Logic V2 Monitor Logic Fault Detection Register Status Register Data Register Command Decode Test & Control Logic Power on, Manual Reset Low Voltage Reset Generation VCC Monitor Logic V3MON V2MON SDA WP SCL VCC (V1MON) Watchdog and Reset Logic + - VTRIP3 + - VTRIP2 + - VTRIP1 VCC or V2MON* Data Sheet May 25, 2006 |
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