SP706SEN-L Exar Corporation, SP706SEN-L Datasheet

SP706SEN-L

Manufacturer Part Number

SP706SEN-L

Description

IC SUPERVISOR MPU LP 8NSOIC

Manufacturer

Exar Corporation

Type

Simple Reset/Power-On Resetr

Datasheets

1.SP706SEN-L.pdf (16 pages)

2.SP706TEN-L.pdf (18 pages)

Specifications of SP706SEN-L

Package / Case

8-SOIC (0.154", 3.90mm Width)

Number Of Voltages Monitored

Reset

Active Low

Reset Timeout

140 ms Minimum

Voltage - Threshold

2.93V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Chip Enable Signals

Internal Hysteresis

Yes

Minimum Operating Temperature

- 40 C

Operating Supply Voltage

1 V to 5.5 V

Operating Temperature Range

- 40 C to + 85 C

Output Type

Active Low

Power Fail Detection

Yes

Monitored Voltage

2.93 V

Undervoltage Threshold

0.6 V

Overvoltage Threshold

3.85 V

Manual Reset

Resettable

Watchdog

Yes

Battery Backup Switching

Power-up Reset Delay (typ)

200 ms

Supply Voltage (max)

5.5 V

Supply Voltage (min)

1 V

Supply Current (typ)

25 uA

Maximum Power Dissipation

727 mW

Mounting Style

SMD/SMT

Maximum Operating Temperature

+ 85 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Output

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

1016-1229-5

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Current page: 1 of 18
Download datasheet (237Kb)

■ Precision Low Voltage Monitor:

■ RESET Pulse Width - 200ms

■ Independent Watchdog Timer - 1.6 sec

■ 40µA Maximum Supply Current

■ Debounced TTL/CMOS Manual-Reset Input

■ RESET Asserted Down to V

■ RESET Output:

■ WDI Can Be Left Floating, Disabling the

Now Available in Lead Free Packaging

The SP706P/S/R/T, SP708R/S/T series is a family of microprocessor (µP) supervisory circuits

that integrate myriad components involved in discrete solutions which monitor power-supply and

battery, in µP, and digital systems. The SP706P/S/R/T, SP708R/S/T series will significantly

improve system reliability and operational efficiency when compared to results obtained with

discrete components. The features of the SP706P/S/R/T, SP708R/S/T series include a

watchdog timer, a µP reset, a Power Fail Comparator, and a manual-reset input. The SP706P/

S/R/T, SP708R/S/T series is ideal for +3.0V or +3.3V applications in automotive systems,

computers, controllers, and intelligent instruments. The SP706P/S/R/T, SP708R/S/T series is

an ideal solution for systems in which critical monitoring of the power supply to the µP and related

digital components is demanded.

Date: 6-28-04

Timeout (SP706P/S/R/T)

Watchdog Function

SP706T and SP708T at +3.08V

SP706P/R and SP708R at +2.63V

SP706S and SP708S at +2.93V

SP706P Active-High

SP706R/S/T Active-Low

SP708R/S/T Both Active High + Active Low

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+3.0V/+3.3V Low Power Microprocessor

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SP706 +3.0/ +3.3 Low Power Microprocessor Circuits

= 1V

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9 .

6 .

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SP706P/R/S/T, SP708R/S/T

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■ Built-In V

■ Available in 8-pin PDIP, NSOIC, and

■ Voltage Monitor for Power Failure or Low

■ Pin Compatible Enhancement to Industry

Supervisory Circuits

µSOIC packages

Battery Warning

Standards 706P/R/S/T and 708R/S/T

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Glitch Immunity

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Related parts for SP706SEN-L

SP706SEN-L Summary of contents

Page 1

Low Power Microprocessor ■ Precision Low Voltage Monitor: SP706P/R and SP708R at +2.63V SP706S and SP708S at +2.93V SP706T and SP708T at +3.08V ■ RESET Pulse Width - 200ms ■ Independent Watchdog Timer - 1.6 sec Timeout (SP706P/S/R/T) ...

Page 2

ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions ...

Page 3

SPECIFICATIONS (continued 2.7V to 5.5V for SP70_P/ 3.0 to 5.5V for SP70_S typical at 25° ...

Page 4

DIP and SOIC WDO RESET / RESET* CC SP706P/R/S GND WDI 4 PFI 5 PFO RESET RESET CC SP708S/R GND N.C. 4 ...

Page 5

...

Page 6

WDI PFI Figure 2. Internal Block Diagram for the SP706P/R/S PFI Date: 6-28-04 WATCHDOG WATCHDOG TRANSITION TIMER DETECTOR TIMEBASE FOR RESET AND 70µA WATCHDOG RESET GENERATOR 2.63V for the SP706P/R ...

Page 7

Figure 4A. Power-Fail Comparator De-assertion Response Time. 1.4V 3V Figure 5A. Power-Fail Comparator Assertion Response Time. 3.6V Figure 6A. SP706 RESET Output Voltage vs. Supply Voltage. Date: 6-28-04 1.4V PFI PFI 3V PFO +1.25V Figure 4B. Circuit for ...

Page 8

Figure 7A. SP706 RESET Response Time 0V 3.2V Figure 8. SP708 RESET and RESET Assertion Figure 10. Circuit for the SP708 RESET and RESET Assertion and De-Assertion Date: 6-28- GND Figure 7B. Circuit for the ...

Page 9

Figure 11. SP708 RESET Output Voltage vs. Supply Voltage Figure 13. Circuit for the SP708 RESET Output Voltage vs. Supply Voltage and the RESET Response Time Figures Date: 6-28-04 3. RESET 0V Figure 12. SP708 RESET Response ...

Page 10

FEATURES The SP706P/R/S/T-SP708R/S/T series provides four key functions reset output during power-up, power-down and brownout conditions independent watchdog output that goes LOW if the watchdog input has not been toggled within 1.6 sec 1.25V ...

Page 11

WP +3.3V WDI 0V +3.3V WDO 0V +3.3V RESET* 0V +3.3V RESET* 0V Figure 14. Watchdog Timing Waveforms To build an early-warning circuit for power failure, connect the PFI pin to a voltage divider as shown in Figure 16. ...

Page 12

Ensuring a Valid RESET Output Down When V falls below 1V, the RESET output no CC longer sinks current, it becomes an open circuit. High-impedance CMOS logic inputs can drift to undetermined voltages if left ...

Page 13

HIGH and the µP wants to pull it LOW, indeterminate logic levels may result. To correct this, connect a 4.7kΩ resistor between the RESET output and the µP reset I/O, as shown if Figure 19. RESET output ...

Page 14

Maximum Transient Duration 100 80 1nF Capacitor V TO GND 60 OUT 40 Above Line RESET Generated 20 NO RESET Generated 0 10 1000 100 Reset Overdrive (mV) Figure 20. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset ...

Page 15

D1 = 0.005" min. (0.127 min 0.100 BSC (2.540 BSC) ALTERNATE END PINS (BOTH ENDS) Date: 6-28-04 PACKAGE: PLASTIC DUAL–IN–LINE (NARROW 0.015" min. (0.381min 0.210" max. (5.334 max). A2 ...

Page 16

Date: 6-28-04 PACKAGE: PLASTIC SMALL OUTLINE (SOIC) (NARROW 45° DIMENSIONS (Inches) Minimum/Maximum 8–PIN (mm) A 0.053/0.069 (1.346/1.748) A1 0.004/0.010 (0.102/0.249 B 0.014/0.019 (0.35/0.49) D 0.189/0.197 (4.80/5.00) E 0.150/0.157 (3.802/3.988) e 0.050 ...

Page 17

BSC 0.0965 ±0.003 0.020 0.020 1 2 0.116 ±0.004 0.013 ±0.005 0.118 ±0.004 50 USOIC devices per tube Date: 6-28-04 PACKAGE: PLASTIC MICRO SMALL OUTLINE (µSOIC) 12.0˚ ±4˚ 0.012 ±0.003 R .003 0.118 0.16 ±0.004 ±0.003 12.0˚ ±4˚ 0.01 ...

Page 18

... SP706REN ................................................................................... -40°C to +85°C .............................................................................. 8–pin NSOIC SP706REU ................................................................................... -40°C to +85°C ............................................................................... 8-pin µSOIC SP706SEP ................................................................................... -40°C to +85°C ................................................................................. 8–pin PDIP SP706SEN ................................................................................... -40°C to +85°C .............................................................................. 8–pin NSOIC SP706SEU ................................................................................... -40°C to +85°C ............................................................................... 8-pin µSOIC SP706TEP ................................................................................... -40°C to +85°C ................................................................................. 8–pin PDIP SP706TEN ................................................................................... -40°C to +85°C .............................................................................. 8–pin NSOIC SP706TEU ................................................................................... -40° ...

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