SP706CU-L/TR Exar Corporation, SP706CU-L/TR Datasheet - Page 4

• Manufacturer Part Number: SP706CU-L/TR
• Description: Low Power Microprocessor Supervisory Circuits
• Manufacturer: Exar Corporation
• Type: Simple Reset/Power-On Resetr

Specifications of SP706CU-L/TR

• Number Of Voltages Monitored: 1
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 4.4V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN ASSIGNMENT
PIN DESCRIPTION
© 2010 Exar Corporation
Name
RESET
GND
WDI
N.C.
PFO
MR
V
PFI
CC
SOIC
SP705-SP706
1
2
3
4
5
6
7
-
MSOP
3
4
5
6
8
1
-
-
Pin Number
SOIC
SP707-SP708
1
2
3
4
5
6
7
-
L
L
MSOP
o
o
3
4
5
6
7
8
1
-
w
w
Fig. 3: Pin Assignment
P
P
SP813L
o
o
SOIC
DIP
w
1
2
3
4
5
6
w
-
-
4/17
e
e
r
r
Manual Reset
This input triggers a reset pulse when pulled below 0.8V. This
active LOW input has an internal 250µA pull-up current. It
can be driven from a TTL or CMOS logic line or shorted to
ground with a switch.
+5V power supply
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
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 V
SP705/707/813L and 4.40V for the SP706/708). It remains
LOW for 200ms after V
MR goes from LOW to HIGH. A watchdog timeout will not
trigger RESET unless WDO is connected to MR.
M
M
i
i
c
c
r
r
o
o
p
p
r
r
o
o
c
c
CC
e
e
is below the reset threshold (4.65V for the
S
S
s
s
P
P
s
s
cc
o
o
7
7
Description
rises above the reset threshold or
r
r
0
0
S
S
5
5
u
u
-
-
p
p
CC
S
S
e
e
when not in use.
P
P
r
r
v
7
v
7
i
i
0
0
s
s
o
o
8
8
r
r
-
-
y
y
S
S
C
C
P
P
Rev. 2.0.0
i
i
8
8
r
r
c
c
1
1
u
u
3
3
i
i
t
t
L
L
s
s