Low Power Microprocessor Supervisory with Battery Switch-Over
® SP691A/693A/800L/800M
Low Power Microprocessor Supervisory with Battery Switch-Over
FEATURES
■ Precision 4.65V/4.40V...
Description
® 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...
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