X40430

® X40430, X40431, X40434, X40435 4Kbit EEPROM FN8251.0 Data Sheet July 29, 2005 Triple Voltage Monitor with Integrated CPU Supervisor FEATURES Monitoring voltages: 5V to 9V Independent core voltage monitor Triple 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 separate 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 Memory security www.DataSheet4U.com 4Kbits of EEPROM —16 byte page write mode —5ms write cycle time (typical) Built-in inadvertent write protection —Power-up/power-down protection circuitry —Block lock protect 0, or 1/2, of EEPROM 400kHz 2-wire interface 2.7V to 5.5V power supply operation Available packages —14-lead SOIC, TSSOP APPLICATIONS Communication Equipment —Routers, Hubs, Switches —Disk Arrays, Network Storage Industrial Systems —Process Control —Intelligent Instrumentation Computer Systems —Computers —Network Servers DESCRIPTION The X40430, X40431, X40434, X40435 combines power-on reset control, watchdog timer, supply voltage supervision, second and third voltage supervision, manual reset, and Block Lock...