SP706R datasheet(5/16 Pages) EXAR

Part #	SP706R

Description	3.0V/3.3V Low Power Microprocessor Supervisory Circuits

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Manufacturer	EXAR [Exar Corporation]

Direct Link	http://www.exar.com

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Rev. 2.0.0

PIN DESCRIPTION

Name

Pin Number

Description

SP706R/S/T

SP708R/S/T

SOIC

MSOP

SOIC

MSOP

MR

1

3

1

3

Manual Reset

This input triggers a reset pulse when pulled below 0.8V. This active

LOW input has an internal 70µA pull-up current. It can be driven

from a TTL or CMOS logic line or shorted to ground with a switch.

VCC

2

4

2

4

Voltage Input

GND

3

5

3

5

Ground reference for all signals

PFI

4

6

4

6

Power-Fail Input

When this voltage monitor input is less than 1.25V, PFO goes LOW.

Connect PFI to ground or VCC when not in use.

PFO

5

7

5

7

Power-Fail Output

This output is LOW until PFI is less then 1.25V

WDI

6

8

-

Watchdog Input

If this input remains HIGH or LOW for 1.6s, the internal watchdog

timer times out and WDO goes LOW. Floating WDI or connecting WDI

to a high-impedance tri-state buffer disables the watchdog feature.

The internal watchdog timer clears whenever RESET is asserted, WDI

is tri-stated, or whenever WDI sees a rising or falling edge.

N.C.

-

6

8

No Connect

RESET

7

1

7

1

Active-LOW RESET Output

This output pulses LOW for 200ms when triggered and stays LOW

whenever VCC is below the reset threshold. It remains LOW for 200ms

after Vcc rises above the reset threshold or MR goes from LOW to

HIGH. A watchdog timeout will not trigger RESET unless WDO is

connected to MR.

WDO

8

2

-

Watchdog Output

This output pulls LOW when the internal watchdog timer finishes its

1.6s count and does not go HIGH again until the watchdog is cleared.

WDO also goes LOW during low-line conditions. Whenever VCC is

below the reset threshold, WDO stays LOW. However, unlike RESET,

WDO does not have a minimum pulse width. As soon as VCC is above

the reset threshold, WDO goes HIGH with no delay.

RESET

-

8

2

Active-HIGH RESET Output

This output is the complement of RESET. Whenever RESET is HIGH,

RESET is LOW and vice-versa. Note that the SP708R/S/T has a reset

output only.

ORDERING INFORMATION

Part Number

Temperature

Range

Marking

Package

Packing

Quantity

Note 1

Note 2

SP706RCN-L

0°C≤TA≤+70°C

SP706RC

YYWWL

X

8-pin NSOIC

Bulk

Lead Free

SP706RCN-L/TR

0°C≤TA≤+70°C

8-pin NSOIC 2.5K/Tape & Reel Lead Free

SP706RCU-L

0°C≤TA≤+70°C

706R

CXXX

YWW

8-pin MSOP

Bulk

Lead Free

SP706RCU-L/TR

0°C≤TA≤+70°C

8-pin MSOP 2.5K/Tape & Reel Lead Free

SP706REN-L

-40°C≤TA≤+85°C

SP706RE

YYWWL

X

8-pin NSOIC

Bulk

Lead Free

SP706REN-L/TR

-40°C≤TA≤+85°C

8-pin NSOIC 2.5K/Tape & Reel Lead Free

SP706REU-L

-40°C≤TA≤+85°C

706R

EXXX

YWW

8-pin MSOP

Bulk

Lead Free

SP706REU-L/TR

-40°C≤TA≤+85°C

8-pin MSOP 2.5K/Tape & Reel Lead Free

SP706SCN-L

0°C≤TA≤+70°C

SP706SC

YYWWL

X

8-pin NSOIC

Bulk

Lead Free

SP706SCN-L/TR

0°C≤TA≤+70°C

8-pin NSOIC 2.5K/Tape & Reel Lead Free

SP706SCU-L

0°C≤TA≤+70°C

706S

CXXX

YWW

8-pin MSOP

Bulk

Lead Free

SP706SCU-L/TR

0°C≤TA≤+70°C

8-pin MSOP 2.5K/Tape & Reel Lead Free

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