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 output in standard operation also makes the SP691A/693A/800L/800M suitable for larger scale, high-performance equipment.

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