SP691A Datasheet, PDF (1/24 Pages) Sipex Corporation – 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 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: 4/18/05
SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over © Copyright 2005 Sipex Corporation
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