Description

The SP691A/693A/800L/800M is a microprocessor (µP) supervisory circuit that integrates various components involved in discrete solutions to supervise power-supply and battery-control functions in µP and digital systems. It offers complete µP monitoring and watchdog functions, making it ideal for low-cost battery management solutions and well suited for portable, battery-powered applications. The SP691ACN has a supply current of 35µA, 6ns chip-enable propagation delay, 25mA current output in battery-backup mode, and 250mA current output in standard operation. It is also suitable for larger-scale, high-performance equipment.

Specifications and features

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

Application Scenarios

The SP691ACN is used in microprocessor and digital systems that require a supervisory circuit to monitor power-supply and battery-control functions. It is ideal for low-cost battery management solutions and is well suited for portable, battery-powered applications such as handheld devices, portable instrumentation, and portable medical equipment. It is also suitable for larger-scale, high-performance equipment such as telecommunications and networking equipment.

Comparison

• Complete µP monitoring and watchdog functions
• Low-cost battery management solution

• None identified