SP800M

® SP691A/693A/800L/800M Low Power Microprocessor Supervisory with Battery Switch-Over FEATURES ■ Precision 4.65V/4.40V Voltage Monitoring ■ 200ms Or Adjustable Reset Time ■ 100ms, 1.6s Or Adjustable Watchdog Time ■ 60µA Maximum Operating Supply Current ■ 2.0µA Maximum Battery Backup Current ■ 0.1µA Maximum Battery Standby Current ■ Power Switching 250mA Output in Vcc Mode (0.6Ω) 25mA Output in Battery Mode (5Ω) ■ On-Board Gating of Chip-Enable Signals Memory Write-Cycle Completion 6ns CE Gate Propagation Delay ■ Voltage Monitor for Power-Fail or Low Battery ■ Backup-Battery Monitor ■ RESET Valid to Vcc=1V ■ 1% Accuracy Guaranteed (SP800L/800M) ■ Pin Compatible Upgrade to MAX691A/693A/ 800L/800M TOP VIEW VBATT 1 VOUT 2 Vcc 3 GND 4 BATT ON 5 LOWLINE 6 OSCIN 7 OSCSEL 8 Corporation 16 RESET 15 RESET 14 WDO 13 CEIN 12 CEOUT 11 WDI 10 PFO 9 PFI DIP/SO Now Available in Lead Free Packaging DESCRIPTION The SP691A/693A/800L/800M is a microprocessor (µP) supervisory circuit that integrates a myriad of components involved in discrete solutions to monitor power-supply and battery-control functions in µP and digital systems. The SP691A/693A/800L/800M offers complete µP monitoring and watchdog functions. The SP691A/693A/800L/800M is ideal for a low-cost battery management solution and is well suited for portable, battery-powered applications with its supply current of 35µA. The 6ns chip-enable propagation delay, the 25mA current output in battery-backup mode, and the 250mA current o...