SP691ACP Sipex Corporation, SP691ACP Datasheet

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SP691ACP

Manufacturer Part Number
SP691ACP
Description
Low power microprocessor supervisory with battery switch-over
Manufacturer
Sipex Corporation
Datasheet
DESCRIPTION
The SP691A/693A/800L/800M is a microprocessor ( P) supervisory circuit that integrates
a myriad of components involved in discrete solutions to monitor power-supply and
battery-control functions in P and digital systems. The SP691A/693A/800L/800M offers
complete P 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 35 A. 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.
SP691A DS/04
100ms, 1.6s Or Adjustable Watchdog Time
60 A Maximum Operating Supply Current
Precision 4.65V/4.40V Voltage Monitoring
200ms Or Adjustable Reset Time
1.0 A Maximum Battery Backup Current
0.1 A Maximum Battery Standby Current
Power Switching
On-Board Gating of Chip-Enable Signals
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/
250mA Output in Vcc Mode (0.6 )
25mA Output in Battery Mode (5 )
Memory Write-Cycle Completion
6ns CE Gate Propagation Delay
800L/800M
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SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over
Low Power Microprocessor Supervisory
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Related parts for SP691ACP

SP691ACP Summary of contents

Page 1

... © Copyright 2000 Sipex Corporation ...

Page 2

... > © Copyright 2000 Sipex Corporation ...

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... © Copyright 2000 Sipex Corporation ...

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... © Copyright 2000 Sipex Corporation ...

Page 5

... GND. If unconnected, WDI is driven = +4.5V for the CC to the 50% point unless otherwise noted 1. 2.8V BATT - 120 Temperature ( BATT V = 2.8V BATT V = 4.5V BATT - 120 Temperature ( On-Resistance vs. Temperature OUT © Copyright 2000 Sipex Corporation . OUT 150 150 ...

Page 6

... C) Figure 10. Battery Current vs. Input Supply Voltage unless otherwise noted BATT - 120 Temperature ( o C) Sourcing Sinking V = 4.25V CC - 120 150 o Temperature ( 2.8V BATT (V) CC © Copyright 2000 Sipex Corporation 150 5 ...

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... HI LOW LOW Delay unless otherwise noted 2.8V BATT 50 driver 50 100 150 200 250 300 Cload (pF) OUT BATT Slope = 5 10 100 I (mA) OUT to V vs. Output Current (Battery- BATT OUT © Copyright 2000 Sipex Corporation 350 1000 ...

Page 8

... CC 8 — External Oscillator Input unconnected or driven SEL SEL — Oscillator Select. When SEL is unconnected or driven HIGH, the SEL , is enabled (refer to Table 1). IN when not used. and ground, which sets it to OUT © Copyright 2000 Sipex Corporation OUT is is ...

Page 9

... CC power-up. Pin 16 — RESET — Active HIGH Reset Output. This output pin is open drain and the inverse of RESET. 1.25V Reset Generator CE OUT Control PFO 14 WDO 15 RESET 16 RESET 6 LOWLINE 2 V OUT 5 BATT ON GND OUT © Copyright 2000 Sipex Corporation ...

Page 10

... Power Fail Comparator power-fail warning and low-battery detection, or monitors another power supply. 10 WDO alarm system LOWLINE status indicator Reset output is asserted during Reset output is pulsed if the Provides for © Copyright 2000 Sipex Corporation ...

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... However, both reset outputs are asserted in battery-backup mode since V be below the reset threshold to enter this mode. 12 100 s 100 RESET 10k Down to Ground RESET and RESET BATT from 0V to 5.5V. CC falls CC must CC © Copyright 2000 Sipex Corporation ...

Page 12

... Normal Watchdog Timeout = 1024 Clock Periods External Clock Figure 21. Selecting Timeout Periods 12 OSC Connect 7 OSC SEL Connect OSC IN 7 OSC SEL Connect C IN OSC IN 7 OSC SEL 8 600 [ms] 47pF OSC IN 7 OSC SEL 8 © Copyright 2000 Sipex Corporation ...

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... falls CC assumes a high IN goes IN remains high IN are <1 A over temperature. IN resistor in series with . OUT and the IN (see the OUT OUT to the 50% point on CE using OUT and use OUT © Copyright 2000 Sipex Corporation IN ...

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... Refer to Figure 17 + BATT R 1 PFO PFI LOW BATT R 2 GND . PFO OUT . Table 2 lists the BATT /battery-switchover CC and CC greater that V CC BATT less than V , BATT CC BATT © Copyright 2000 Sipex Corporation ...

Page 15

... must be less than the CC ) should connects each. Refer to Figure 24. The ) is similar BATT © Copyright 2000 Sipex Corporation E R OUT ...

Page 16

... BATT CC must be less than 0.3V above is above the reset threshold. CC BATT BATT -to-V diode and the BATT OUT switch until the circuit is broken ground, pull OUT IN OUT © Copyright 2000 Sipex Corporation , and is BATT and , ...

Page 17

... No precautions CC are necessary to avoid spurious reset pulses PFI PFO *optional connect TRIP 1. 1.25 5 TRIP H © Copyright 2000 Sipex Corporation CC ...

Page 18

... OSC capacitor leakage must be small compared to +100nA 0.1 F Capacitor V to GND OUT Above Line Reset Generated 10 1000 10000 Reset Comparator Overdrive ), (mV) CC transient that goes 100mV CC is connected to ground, OSC SEL as possible. The sum of any PC IN © Copyright 2000 Sipex Corporation IN IN ...

Page 19

... V falls exponentially, which more than CC satisfies the maximum fall-time requirement. SP691A DS/04 SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over START SET WDI LOW SUBROUTINE OR PROGRAM LOOP SET WDI HIGH RETURN END Figure 30. Watchdog Flow Diagram © Copyright 2000 Sipex Corporation 19 ...

Page 20

... B1 (1.143/1.778) 0.008/0.014 C (0.203/0.356) D 0.780/0.800 (19.812/20.320) E 0.300/0.325 (7.620/8.255) 0.240/0.280 E1 (6.096/7.112) 0.115/0.150 L (2.921/3.810) Ø 0°/ 15° (0°/15° Ø 0.300 BSC A (7.620 BSC) © Copyright 2000 Sipex Corporation ...

Page 21

... B 0.013/0.020 (0.330/0.508) D 0.386/0.394 (9.802/10.000) E 0.150/0.157 (3.802/3.988) e 0.050 BSC (1.270 BSC) H 0.228/0.244 (5.801/6.198) h 0.010/0.020 (0.254/0.498) L 0.016/0.050 (0.406/1.270) Ø 0°/8° (0°/8°) 21 Ø L © Copyright 2000 Sipex Corporation ...

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... A1 0.004/0.012 (0.102/0.300) B 0.013/0.020 (0.330/0.508) D 0.398/0.413 (10.10/10.49) E 0.291/0.299 (7.402/7.600) e 0.050 BSC (1.270 BSC) H 0.394/0.419 (10.00/10.64) L 0.016/0.050 (0.406/1.270) Ø 0°/8° (0°/8°) 22 SMALL OUTLINE (SOIC) (WIDE) Ø L © Copyright 2000 Sipex Corporation ...

Page 23

... Model SP691ACP ............................................... 0 SP691ACN ............................................... 0 SP691ACT ............................................... 0 SP691AEP ............................................. -40 SP691AEN ............................................. -40 SP691AET ............................................. -40 SP693ACP ............................................... 0 SP693ACN ............................................... 0 SP693ACT ............................................... 0 SP693AEP ............................................. -40 SP693AEN ............................................. -40 SP693AET ............................................. -40 SP800LCP ............................................... 0 SP800LCN ............................................... 0 SP800LCT ................................................ 0 SP800LEP ............................................. -40 SP800LEN ............................................. -40 SP800LET .............................................. -40 SP800MCP .............................................. 0 SP800MCN .............................................. 0 SP800MCT ............................................... 0 SP800MEP ............................................. -40 SP800MEN ............................................ -40 SP800MET ............................................. -40 Please consult the factory for pricing and availability on a Tape-On-Reel option. Corporation SIGNAL PROCESSING EXCELLENCE ...

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