TPS3610U18

TPS3610U18, TPS3610T50 BATTERYĆBACKUP SUPERVISORS FOR RAM RETENTION features D Supply Current of 40 µA (Max) D Battery Supply Current of 100 nA (Max) D Precision Supply-Voltage Monitor, 1.8 V, 5 V; Other Options on Request D Watchdog Timer With 800-ms Time-Out D Backup-Battery Voltage Can Exceed VDD D Power-On Reset Generator With Fixed 100-ms Reset Delay Time D Battery-OK Output D Voltage Monitor for Power-Fail or Low-Battery Monitoring D Manual Switchover to Battery-Backup Mode D Chip-Enable Gating . . . 3 ns (at VDD = 5 V) Max Propagation Delay D Battery-Freshness Seal D 14-pin TSSOP Package D Temperature Range . . . –40°C to 85°C SLVS327B – DECEMBER 2000 – REVISED DECEMBER 2002 typical applications D Fax Machines D Set-Top Boxes D Advanced Voice Mail Systems D Portable Battery-Powered Equipment D Computer Equipment D Advanced Modems D Automotive Systems D Portable Long-Time Monitoring Equipment D Point of Sale Equipment TPS3610 TSSOP (PW) Package (TOP VIEW) VOUT VDD GND MSWITCH CEIN BATTON PFI 1 2 3 4 5 6 7 14 VBAT 13 RESET 12 WDI 11 LOWLINE 10 CEOUT 9 BATTOK 8 PFO typical operating circuit Power Supply 0.1 µF Address Decoder External Source CEIN CEOUT Backup Rx VDD VBAT TPS3610 Battery PFI Ry RESET WDI PFO BATTOK BATTON LOWLINE MSWITCH VOUT GND Switchover Capacitor 0.1 µF ACTUAL SIZE (5,10mm x 6,60mm) Address Bus uC RESET I/O Data Bus I/O I/O I/O I/O VCC GND CE CMOS RAM VCC 8 16 CE CMOS RAM VCC 8 RealTime Clock VCC Please be aware that an imp...