SP691AEN-L

EXAR  SP691AEN-L  监控器电路, 低功耗, 高电平有效, 低电平有效复位, 4.75V-5.5V输入, NSOIC-16

The is a low-power Microprocessor Supervisory with battery switch-over. The Microprocessor µP Supervisory Circuit integrates a myriad of components involved in discrete solutions to monitor power-supply and battery-control functions in µP and digital systems. It offers complete µP monitoring and watchdog functions. 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 suitable for larger scale and high-performance equipment.

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On-board gating of chip-enable signals

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Memory write-cycle completion

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Voltage monitor for power-fail or low-battery warning

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Backup-battery monitor

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RESET\ valid to VCC= 1V

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Pin-compatible upgrade to MAX691A/693A

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Power switching - 250mA Output in VCC mode 0.6R and 25mA output in battery mode 5R

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6ns CE gate propagation delay

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100ms, 1.6s or adjustable Watchdog timer

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60µA Maximum operating supply current

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2µA Maximum battery backup current

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0.1µA Maximum battery standby current