SP706SEN-L Datasheet, PDF (5/16 Pages) Exar Corporation – 3.0V/3.3V Low Power Microprocessor Supervisory Circuits

SP706R/S/T - SP708R/S/T
3.0V/3.3V Low Power Microprocessor Supervisory
Circuits
PIN DESCRIPTION
Name
MR
V_CC
GND
PFI
PFO
WDI
N.C.
RESET
WDO
RESET
Pin Number
SP706R/S/T
SOIC
MSOP
SP708R/S/T
SOIC
MSOP
1
3
1
3
2
4
2
4
3
5
3
5
4
6
4
6
5
7
5
7
6
8
-
-
-
-
6
8
7
1
7
1
8
2
-
-
-
-
8
2
Description
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.
Voltage Input
Ground reference for all signals
Power-Fail Input
When this voltage monitor input is less than 1.25V, PFO goes LOW.
Connect PFI to ground or V_CC when not in use.
Power-Fail Output
This output is LOW until PFI is less then 1.25V
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.
No Connect
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.
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 V_CC is
below the reset threshold, WDO stays LOW. However, unlike RESET,
WDO does not have a minimum pulse width. As soon as V_CC is above
the reset threshold, WDO goes HIGH with no delay.
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
SP706RCN-L
SP706RCN-L/TR
SP706RCU-L
SP706RCU-L/TR
SP706REN-L
SP706REN-L/TR
SP706REU-L
SP706REU-L/TR
SP706SCN-L
SP706SCN-L/TR
SP706SCU-L
SP706SCU-L/TR
Temperature
Range
0°C≤T_A≤+70°C
0°C≤T_A≤+70°C
0°C≤T_A≤+70°C
0°C≤T_A≤+70°C
-40°C≤T_A≤+85°C
-40°C≤T_A≤+85°C
-40°C≤T_A≤+85°C
-40°C≤T_A≤+85°C
0°C≤T_A≤+70°C
0°C≤T_A≤+70°C
0°C≤T_A≤+70°C
0°C≤T_A≤+70°C
© 2010 Exar Corporation
Marking
SP706RC
YYWWL
X
706R
CXXX
YWW
SP706RE
YYWWL
X
706R
EXXX
YWW
SP706SC
YYWWL
X
706S
CXXX
YWW
Package
Packing
Quantity
Note 1
8-pin NSOIC
Bulk
Lead Free
8-pin NSOIC 2.5K/Tape & Reel Lead Free
8-pin MSOP
Bulk
Lead Free
8-pin MSOP 2.5K/Tape & Reel Lead Free
8-pin NSOIC
Bulk
Lead Free
8-pin NSOIC 2.5K/Tape & Reel Lead Free
8-pin MSOP
Bulk
Lead Free
8-pin MSOP 2.5K/Tape & Reel Lead Free
8-pin NSOIC
Bulk
Lead Free
8-pin NSOIC 2.5K/Tape & Reel Lead Free
8-pin MSOP
Bulk
Lead Free
8-pin MSOP 2.5K/Tape & Reel Lead Free
5/16
Note 2
Rev. 2.0.0