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X40410 Dataheets PDF



Part Number X40410
Manufacturers Intersil Corporation
Logo Intersil Corporation
Description (X40410 - X40415) Dual Voltage Monitor
Datasheet X40410 DatasheetX40410 Datasheet (PDF)

® X40410, X40411, X40414, X40415 4kbit EEPROM Data Sheet March 28, 2005 FN8116.0 Dual Voltage Monitor with Integrated CPU Supervisor FEATURES • Dual voltage detection and reset assertion —Standard reset threshold settings See Selection table on page 2. —Adjust low voltage reset threshold voltages using special programming sequence —Reset signal valid to VCC = 1V —Monitor three voltages or detect power fail • Independent Core Voltage Monitor (V2MON) • Fault detection register • Selectable power.

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® X40410, X40411, X40414, X40415 4kbit EEPROM Data Sheet March 28, 2005 FN8116.0 Dual Voltage Monitor with Integrated CPU Supervisor FEATURES • Dual voltage detection and reset assertion —Standard reset threshold settings See Selection table on page 2. —Adjust low voltage reset threshold voltages using special programming sequence —Reset signal valid to VCC = 1V —Monitor three voltages or detect power fail • Independent Core Voltage Monitor (V2MON) • Fault detection register • Selectable power-on reset timeout (0.05s, 0.2s, 0.4s, 0.8s) • Selectable watchdog timer interval (25ms, 200ms,1.4s, off) • Low power CMOS —25µA typical standby current, watchdog on —6µA typical standby current, watchdog off • 4Kbits of EEPROM —16 byte page write mode —5ms write cycle time (typical) www.DataSheet4U.com • Built-in inadvertent write protection —Power-up/power-down protection circuitry —Block lock protect none or 1/2 of EEPROM • 400kHz 2-wire interface • 2.7V to 5.5V power supply operation BLOCK DIAGRAM • Available packages —8-lead SOIC, TSSOP • Monitor Voltages: 5V to 0.9V • Memory Security • Independent Core Voltage Monitor APPLICATIONS • Communication Equipment —Routers, Hubs, Switches —Disk Arrays, Network Storage • Industrial Systems —Process Control —Intelligent Instrumentation • Computer Systems —Computers —Network Servers DESCRIPTION The X40410/11/14/15 combines power-on reset control, watchdog timer, supply voltage supervision, and secondary voltage supervision, and Block Lock™ protect serial EEPROM in one package. This combination lowers system cost, reduces board space requirements, and increases reliability. Applying voltage to VCC activates the power-on reset circuit which holds RESET/RESET active for a period of time. This allows the power supply and system oscilla- SDA Data Register Command Decode Test & Control Logic Threshold Reset Logic Fault Detection Register Status Register EEPROM Array Watchdog Timer and Reset Logic WDO SCL VCC (V1MON) + User Programmable VTRIP1 User Programmable VTRIP2 + VCC or V2MON Power-on, Low Voltage Reset Generation RESET X40410/14 RESET X40411/15 V2MON V2FAIL *X40410/11= V2MON* X40414/15 = VCC 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. X40410, X40411, X40414, X40415 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 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 special needs or to fine-tune the threshold for applications requiring higher precision. The Watchdog Timer provides an independent protection mechanism for microcontrollers. When the microTriple Voltage Monitors Device X4040/11 -A -B -C X40414/15 -A -B -C controller fails to restart a timer within a selectable time out interval, the device activates the WDO signal. The user selects the interval from three preset values. Once selected, the interval does not change, even after cycling the power. The memory portion of the device is a CMOS Serial EEPROM array with Intersil’s Block Lock protection. The array is internally organized as x 8. The device features a 2-wire interface and software protocol allowing operation on an I2C® bus. The device utilizes Intersil’s proprietary Direct Write™ cell, providing a minimum endurance of 100,000 cycles and a minimum data retention of 100 years. Expected System Voltages 5V; 3V or 3.3V 5V; 3V 3V; 3.3V; 1.8V 3V; 3.3V; 1.5V 3V; 1.5V 3V or 3.3V; 1.1 or 1.2V Vtrip1(V) 2.0–4.75* 4.55–4.65* 4.35–4.45* 2.85–2.95* 2.0–4.75* 2.85–2.95* 2.55–2.65* 2.85–2.95* Vtrip2(V) 1.70–4.75 2.85–2.95 2.55–2.65 1.65–1.75 0.90–3.50* 1.25–1.35* 1.25–1.35* 0.95–1.05* POR (system) RESET = X40410 RESET = X40411 RESET = X40414 RESET = X40415 *Voltage monitor requires VCC to operation. Others are independent of VCC. PIN CONFIGURATION X40410/14, X40411/15 8-Pin SOIC V2FAIL V2MON RESET/RESET VSS 1 2 3 4 8 7 6 5 VCC WDO SCL SDA X40410/14, X40411/15 8-Pin TSSOP WDO VCC V2FAIL V2MON 1 2 3 4 8 7 6 5 SCL SDA VSS RESET/RESET PIN DESCRIPTION Pin SOIC TSSOP Name Function 1 3 V2FAIL V2 Voltage Fail Output. This open drain output goes LOW when V2MON is less than VTRIP2 and goes HIGH when V2MON exceeds VTRIP2. There is no power-up reset delay circuitry on this pin. 2 4 V2MON V2 Voltage Monitor Input. When the V2MON input is less than the VTRIP2 voltage, V2FAIL goes LOW.


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