X40010

New Features Monitor Voltages: 5V to 0.9V Independent Core Voltage Monitor Preliminary Datasheet X40010/X40011/X40014/X40015 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 400kHz 2-wire interface 2.7V to 5.5V power supply operation Available packages —8-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 X40010/11/14/15 combines power-on reset control, watchdog timer, supply voltage supervision, and secondary voltage supervision, 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 oscillator to stab...