X5083

X5083 CPU Supervisor with 8Kbit SPI EEPROM FEATURES Low VCC detection and reset assertion —Four standard reset threshold voltages 4.63V, 4.38V, 2.93V, 2.63V —Re-program low VCC reset threshold voltage using special programming sequence. —Reset signal valid to VCC = 1V Selectable time out watchdog timer Long battery life with low power consumption —<50µA max standby current, watchdog on —<1µA max standby current, watchdog off —<400µA max active current during read 8Kbits of EEPROM Save critical data with Block Lock™ memory —Block lock first or last page, any 1/4 or lower 1/2 of EEPROM array Built-in inadvertent write protection —Write enable latch —Write protect pin SPI Interface - 3.3MHz clock rate Minimize programming time —16 byte page write mode —5ms write cycle time (typical) SPI modes (0,0 & 1,1) Available packages —8-lead TSSOP, 8-lead SOIC, 8-Lead PDIP BLOCK DIAGRAM POR and Low Voltage Reset Generation Reset & Watchdog Timebase Watchdog Transition Detector Watchdog Timer Reset APPLICATIONS Communications Equipment —Routers, Hubs, Switches —Set Top Boxes Industrial Systems —Process Control —Intelligent Instrumentation Computer Systems —Desktop Computers —Network Servers Battery Powered Equipment Typical Application 2.7-5.0V VCC VCC uC X5083 RESET CS SCK SI SO WP VSS 10K RESET SPI VSS VCC VTRIP + RESET (X5083) - X5083 Standard VTRIP Level 4.63V (+/-2.5%) 4.38V (+/-2.5%) Suffix -4.5A -4.5 -2.7A -2.7 CS/WDI SI SO SCK WP Command Decod...