SP691A(2004) 查看數據表（PDF） - Signal Processing Technologies

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SP691A
(Rev.:2004)

Low Power Microprocessor Supervisory with Battery Switch-Over

Signal Processing Technologies 

SP691A/693A/800L/800M

SIGNAL PROCESSING EXCELLENCE

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 output in

standard operation also makes the SP691A/693A/800L/800M suitable for larger scale,

high-performance equipment.

Part Number

SP691A

SP693A

SP800L

SP800M

RESET Threshold RESET Accuracy

4.65V

+125mV

4.40V

+125mV

4.65V

+50mV

4.40V

+50mV

PFI Accuracy

+4%

+4%

+1%

+1%

Backup-Battery Switch

YES

YES

YES

YES

Date: 5/25/04

SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over © Copyright 2004 Sipex Corporation

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