ALSC ASM708RCPA 3/3.3/4.0 v up supervisor circuit Datasheet

ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
3/3.3/4.0 V µP Supervisor Circuits
General Description
Features
The ASM706P/R/S/T/J and ASM708R/S/T/J are cost effective
•
CMOS supervisor circuits that monitor power-supply and
Precision power supply minotor
•2.63V threshold (ASM706P/R, ASM708R)
battery voltage level, and µP/µC operation.
•2.93V threshold (ASM706S, ASM708S)
•3.08V threshold (ASM706T, ASM708T)
•New 4.00V threshold (ASM706J , ASM708J)
The family offers several functional options. Each device
generates a reset signal during power-up, power-down and
during brownout conditions. A reset is generated when the
•
•
supply drops below 2.63V (ASM706P/R, ASM708R), 2.93V
(ASM706S, ASM708S), 3.08V (ASM706T, ASM708T) or 4.00
(ASM706J, ASM708J). In addition, the ASM706P/R/S/T/J
feature a 1.6 second watchdog timer. The watchdog timer
output will trigger a reset if connected to MR. Floating the WDI
Debounced manual reset input
Auxiliary voltage monitor comparator
•1.25V threshold
•Battery monitor / auxiliary supply monitor
•
Watchdog timer (ASM706P/R/S/T/J)
•Watchdog can be disabled by floating WDI
•
•
200ms reset time delay
Three reset signal options
•Active HIGH: ASM706P
input pin disables the watchdog timer.
•Active LOW: ASM706R/S/T/J
The ASM708R/S/T/J have both active-HIGH and active-LOW
reset outputs but no watchdog function. The ASM706P has the
same pin-out and functions as the ASM706R but has an activeHIGH reset output.
•Active HIGH and LOW outputs: ASM708R/S/T/J
•
•
DIP, SO and MicroSO packages
Guaranteed RESET assertion to VCC = 1.1V
Applications
A versatile power-fail circuit, useful in checking battery levels
and non-5V supplies, has a 1.25V threshold. All devices have a
manual reset input. All devices are available in 8-pin DIP, SO
and the compact MicroSO packages. The MicroSO package
requires 50% less PC board area than the conventional SO
package.
•
•
•
•
•
•
•
•
Computers and embedded controllers
CTI applications
Automotive systems
Portable/Battery-operated systems
Intelligent instruments
Wireless communication systems
PDAs and hand-held equipment
Safety systems
Typical Operating Circuit
Unregulated DC
+3.3V Regulator
VCC
R1
VCC
PFI
R2
RESET
(RESET)
ASM706 R/S/T
ASM708 R/S/T
(ASM706 P)
µP
RESET
(RESET)
WDI
I/O LINE
WDO
NMI
PFO
INTERRUPT
MR
Alliance Semiconductor
2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com
Notice: The information in this document is subject to change without notice
ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Block Diagrams
Transition
Detector
WDI
Watchdog
Timer
WDO
RESET
VCC
VCC
Timebase
20kΩ
20kΩ
MR
RESET
Generator
MR
RESET
(RESET) ASM706P
+
VCC
-
+
PFI
RESET
Generator
+
VCC
2.63V (ASM706P/R)
2.93V (ASM706S)
3.08V (ASM706T)
4.00V (ASM706J)
1.25V
-
+
2.63V (ASM708R)
2.93V (ASM708S)
3.08V (ASM708T)
4.00V (ASM708J)
PFI
+
PFO
-
1.25V
ASM706P/R/S/T/J
RESET
+
PFO
-
ASM708R/S/T/J
GND
GND
Pin Configuration
PFI
4
1
VCC
2
6
NC
GND 3
5
PFO
PFI
4
8
WDO MR
7 RESET VCC
1
2
6
WDI
GND 3
5
PFO
PFI
4
8
WDO
7 RESET
(RESET) RESET
(ASM706P)
WDO
1
2
6
WDI
MR 3
5
PFO
VCC 4
ASM706P
MR
7 RESET
ASM706R/S/T/J
GND 3
8 RESET
ASM706R/S/T/J
2
ASM706P
1
ASM708R/S/T/J
MR
VCC
8
WDI
RESET
1
7
PFO
RESET
2
6
PFI
MR 3
5
GND
VCC 4
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
ASM708R/S/T/J
MicroSO
DIP/SO
8
NC
7
PFO
6
PFI
5
GND
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Pin Description
Pin Number
ASM706P
DIP/
SO
1
MicroSO
3
ASM706R/S/T/J
ASM708R/S/T/J
DIP/
SO
DIP/
SO
1
MicroSO
3
1
Name
Function
MicroSO
3
MR
Manual reset input. The active LOW input triggers
a reset pulse. It is pulled HIGH by a 20kΩ pull-up
resistor. It is compatible with TTL/CMOS signals
when VCC = 5V. It can be shorted to ground
through a mechanical switch. Leave folating or
connect to VCC if the function is not used.
2
4
2
4
2
4
VCC
Monitored power supply input.
3
5
3
5
3
5
GND
Ground.
4
6
4
6
4
6
PFI
Power-fail input voltage monitor. With PFI less
than 1.25V, PFO goes LOW. Connect PFI to
Ground when not in use.
5
7
5
7
5
7
PFO
Power-fail output. The output is active LOW and
sinks current when PFI is less than 1.25V. If not
used, leave the pin unconnected.
6
8
6
8
-
-
WDI
Watchdog input. WDI controls the internal watchdog timer. A HIGH or LOW signal for 1.6sec at
WDI allows the internal timer to run-out, setting
WDO low. A rising or falling edge must occur at
WDI within 1.6 seconds or WDO goes LOW. The
watchdog function is disabled by floating WDI. The
internal watchdog timer clears when: RESET is
asserted; WDI is three-stated ; or WDI sees a rising or falling edge.
-
-
-
-
6
8
NC
Not Connected
Active LOW reset output. Pulses LOW for 200ms
when triggered, and stays LOW whenever VCC is
-
-
7
1
7
1
RESET
below the reset threshold. RESET remains LOW
for 200ms after VCC rises above the reset threshold or MR goes from HIGH to LOW. A watchdog
timeout will not trigger RESET unless WDO is connected to MR.
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Pin Number
ASM706P
DIP/
SO
8
MicroSO
2
ASM706R/S/T/J
ASM708R/S/T/J
DIP/
SO
DIP/
SO
8
MicroSO
2
-
Name
Function
MicroSO
-
WDO
Watchdog output. WDO goes LOW when the 1.6
second interval watchdog timer times-out and
does not go HIGH until a transition occurs at WDI.
In addition, when VCC falls below the reset threshold, WDO goes LOW. Unlike RESET, WDO does
not have a minimum pulse width and as soon as
VCC exceeds the reset threshold, WDO becomes
HIGH with no delay.
7
1
-
-
8
2
RESET
Active HIGH reset output. The inverse of RESET.
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Detailed Descriptions
A
proper
reset
input
Manual Reset (MR)
enables
a
microprocessor/
microcontroller to start in a known state. ASM706 P/ R/ S/ T/
J and ASM708 R/ S/ T/ J assert reset to prevent code
execution errors during power-up, power-down and brownout conditions.
The active-LOW manual reset input is pulled high by an
internal 20kΩ pull-up resistor and can be driven low by
CMOS/TTL logic or a mechanical switch to ground. An
external debounce circuit is
unnecessary since the 140ms minimum reset time will
debounce mechanical pushbutton switches. The minimum
RESET/RESET Operation
MR input pulse width is 0.5µs with a 3V VCC input and 0.15µs
The RESET/RESET signals are designed to start or return a
with a 5V VCC input. If not used, tie MR to VCC or leave
µP/µC to a known state.
floating.
With VCC above 1.2V, RESET and RESET are guaranteed to
be asserted. During a power-up sequence, the reset outputs
remain asserted until the supply rises above the threshold
level. The resets are deasserted approximately 200ms after
crossing the threshold.
In a brownout situation where VCC falls below the threshold
level, the reset outputs are asserted. If a brownout occurs
during an already initiated reset period, the reset period will
extend for an additional reset period of 200ms.
The ASM708 devices have dual reset outputs, one active
LOW and one active HIGH. The ASM706P has a single
active HIGH reset and the ASM706/R/S/T/J devices have an
active LOW reset output.
Figure 1: WDI Three-state operation
By connecting the watchdog output (WDO) and MR, a
Alliance
Part #
RESET
Polarity
Threshold
Watchdog
Timer
ASM706P
HIGH
2.63V
YES
Watchdog Timer
ASM706R
LOW
2.63V
YES
A watchdog timer available on the ASM706P/R/S/T/J
ASM706S
LOW
2.93V
YES
ASM706T
LOW
3.08V
YES
ASM706J
LOW
4.00V
YES
ASM708R
HIGH & LOW
2.63V
NO
ASM708S
HIGH & LOW
2.93V
NO
ASM708T
HIGH & LOW
3.08V
NO
ASM708J
HIGH & LOW
4.00V
NO
watchdog timeout forces a RESET to be generated.
monitors µP/µC activity. An output line on the processor is
used to toggle the WDI line. If the line is not toggled within 1.6
seconds on the Watchdog Input (WDI), the internal timer puts
the Watchdog Output (WDO) into a LOW state. WDO will
remain LOW until a toggle is detected at WDI.
The watchdog function is disabled, meaning it is cleared and
not counting, if WDI is floated or connected to a three-stated
circuit. The watchdog timer is also disabled if RESET is
asserted. When RESET becomes inactive and the WDI input
sees a high or low transition as short as 100ns (VCC = 2.7V)/
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
50ns (VCC = 4.5V), the watchdog timer will begin a 1.6
Application Information
second countdown. Additional transitions at WDI will reset
Bi-directional Reset Pin Interfacing
the watchdog timer and initiate a new countdown sequence.
The ASM706/8 can interface with µP/µC bi-directional reset
WDO will also become LOW and remain so, whenever the
pins by connecting a 4.7kΩ resistor in series with the RESET
supply voltage, VCC, falls below the device threshold level.
output and the µP/µC bi-directional reset pin.
WDO goes HIGH as soon as VCC transitions above the
threshold. There is no minimum pulse width for WDO as
BUF
Buffered
RESET
there is for the RESET outputs. If WDI is floated, WDO
essentially acts as a low supply voltage output indicator.
VCC
Power-failure Detection With Auxiliary Comparator
All devices have an auxiliary comparator with 1.25V trip point.
The output, PFO, is active LOW and the noninverting input is
PFI. This comparator can be used as a supply voltage
Supply Voltage
ASM70x
µC or µP
4.7kΩ
RESET
monitor with an external resistor voltage divider. As the
monitored voltage level falls, PFI is reduced causing the PFO
RESET
Input
GND
GND
output to go LOW. Normally PFO interrupts the processor so
the system can be shut down in a controlled manner.
Bi-directional I/O Pin
Figure 3: Bi-directional reset pin interfacing
0V
Ensuring the RESET is Valid Down to VCC = 0V
When VCC falls below 1.2V, the ASM706R/S/T/J and 708R/S/
T/J RESET reset outputs no longer pull down; it becomes
indeterminate. To avoid the possibility that stray charges
could build up and force RESET to the wrong state, a pulldown resistor should be connected to the RESET pin, thus
draining such charges to ground. The resistor value is not
critical. A100kΩ resistor will pull RESET to ground without
loading it.
Figure 2: Watchdog timing
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Monitoring Voltages Other Than VCC
VIN
The ASM706/708 can monitor voltages other than VCC using
+5V
the Power Fail circuitry. If a resistive divider is connected from
the voltage to be monitored to the PFI input, the PFO will go
LOW if the voltage at PFI goes below 1.25V reference. Should
hysteresis
be
desired,
connect
a
resistor
(equal
VCC
R1
MR
to
approximately 10 times the sum of the two resistors in the
divider) between the PFI and PFO pins. A capacitor between
PFI and GND will reduce circuit sensitivity to input high
frequency noise. If it is desired to assert a reset in addition to
ASM70X PFO
PFI
R2
GND
RESET
To µP
the PFO flag, this may be achieved by connecting the PFO
output to MR.
Figure 4: Monitoring +5V and an additional supply VIN
Absolute Maximum Ratings
Parameter
Min
Max
Unit
VCC
-0.3
6.0
V
All other inputs
-0.3
VCC + 0.3
V
Input Current at VCC and GND
20
mA
Output Current: All outputs
20
mA
Rate of Rise at VCC
100
V/µs
Plastic DIP Power Dissipation
(Derate 9mW/°C above 70°C)
700
mV
SO Power Dissipation
(Derate 5.9mW/°C above 70°C)
470
mW‘
MicroSO POwer Disspation
(Derate 4.1mW/°C above 70°C)
330
mW
Pin Terminal Voltage with Respect to Ground
Operating Temperature Range
ASM706xE, ASM708xE
-40
+85
°C
ASM706xC, ASM708xC
0
70
°C
-65
160
°C
300
°C
Storage Temperature Range
Lead Temperature Soldering (10sec)
Note: These are stress ratings only and functional operation is noy implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability.
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Electrical Characteristics
Unless otherwise noted, specifications are over the operating temperature range and VCC supply voltages are 2.7V to 5.5V (ASM706P,
ASM708R), 3.0 V to 5.5V (ASM706/708S), 3.15V to 5.5V (ASM706/708T) and 4.1V to 5.5.V (ASM706/708J)
Parameter
Operating Voltage
Range
Symbol
VCC
Conditions
Min
ICC
1.1
5.5
ASM706xE, ASM708xE
1.2
5.5
75
ing
ASM706xC, ASM706xE, MR = VCC, WDI FloatICC
ing
VRT
V
140
50
140
75
140
µA
ASM708xC, ASM708xE, MR = VCC, WDI Floating
RESET Threshold
Unit
µA
ASM708xC, ASM708xE, MR = VCC, WDI Floating
Supply Current
VCC < 5.5V
Max
ASM706xC, ASM708xC
ASM706xC, ASM706xE, MR = VCC, WDI FloatSupply Current
VCC < 3.6V
Typ
50
140
P and R devices
2.55
2.63
2.70
S devices
2.85
2.93
3.00
T devices
3.00
3.08
3.15
J devices
3.89
4.00
4.10
RESET Threshold
Hysteresis
40
V
mV
VCC = 3V (ASM706/8, P/R devices).
RESET Pulse Width
tRS
VCC = 3.3V (ASM706/8, S/T devices).
140
tMR
280
ms
VCC = 4.4V (ASM706/8, J devices).
VCC = 5V
MR Pulse Width
200
200
4.5V < VCC < 5.5V
150
3.6V < VCC < 4.5V (ASM706/8J devices)
VRST (MAX) < VCC < 3.6V
500
ns
(ASM706/8/P/R/S/T devices)
MR to RESET Out
Delay
tMD
3.6V < VCC < 4.5V (AS706/8J devices)
VRST (MAX) < VCC < 3.6V
750
ns
(ASM706/8/P/R/S/T devices)
4.5V < VCC < 5.5V
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
250
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Parameter
MR Input Threshold
MR Pullup resistor
RESET Output Voltage
(All R/S/T/J devices)
Symbol
Conditions
VIH
VRST(MAX) < VCC < 4.5V
VIL
VRST(MAX) < VCC < 4.5V
VIH
4.5V < VCC < 5.5V
VIL
4.5V < VCC < 5.5V
RP
ISOURCE = 800µA, 4.5V < VCC < 5.5V
VOL
ISINK = 3.2mA, 4.5V < VCC < 5.5V
VOH
ISOURCE=500µA, VRST(MAX) < VCC < 4.5V
VOL
ISINK =1.2mA, VRST(MAX) < VCC < 4.5V
Typ
V
2.0
0.8
20
0.8VCC
0.3
RESET Output Voltage
ASM708R/S/T/J
ISINK = 3.2mA, 4.5V < VCC < 5.5V
VOH
ISOURCE=500µA, VRST(MAX) < VCC <3.6V
VOL
ISINK =1.2mA, VRST(MAX) < VCC < 3.6V
VOH
ISOURCE = 800µA, 4.5V < VCC < 5.5V
VOL
ISINK = 3.2mA, 4.5V < VCC < 5.5V
VOH
ISOURCE=500µA, VRST(MAX) < VCC < 4.5V
VOL
ISINK =1.2mA, VRST(MAX) < VCC < 4.5V
V
0.3
0.3
ASM708xE devices)
VOL
kΩ
0.4
ISINK =100µA, VCC = 1.2V (ASM706xE,
RESET Output Voltage
ASM706P
40
VCC - 1.5
ASM708xC devices)
ISOURCE = 800µA, 4.5V < VCC < 5.5V
Unit
0.6
ISINK = 50µA, VCC = 1.1V (ASM706xC,
VOH
Max
0.7VCC
10
VOH
VOL
Min
VCC - 1.5
0.4
V
0.8VCC
0.3
VCC - 1.5
0.4
V
0.8VCC
0.3
VCC = 3V (ASM706, P/R devices).
Watchdog Timeout
Period
tWD
VCC = 3.3V (ASM706 S/T devices).
1.0
1.6
2.25
s
VCC = 4.4V (ASM706, J devices).
VIL = 0.4V, VIH=0.8VCC,
VRST(MAX) < VCC < 4.5V
WDI Pulse Width
tWP
100
ns
VIL = 0.4V, VIH=0.8VCC,
4.5V < VCC < 5.5V
50
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Parameter
Symbol
VIH
WDI Input Threshold
Conditions
VCC = 5V
Min
Typ
0.8
VRST(MAX) < VCC < 4.5V
V
0.7VCC
VIL
0.6
WDI = VCC, ASM706 only
WDI Input Current
WDI = 0V, ASM706 only
WDO Output Voltage
VOH
ISOURCE = 800µA, 4.5V < VCC < 5.5V
VOL
ISINK = 1.2mA, 4.5V < VCC < 5.5V
VOH
ISOURCE=500µA, VRST(MAX) < VCC < 4.5V
VOL
ISINK =1.2mA, VRST(MAX) < VCC < 4.5V
PFI falling. For P/R devices VCC = 3V. For S/T
PFI Input Threshold
devices VCC = 3.3V. For J devices VCC = 4.4V
PFI Input Current
PFO Output Voltage
Unit
3.5
VIL
VIH
Max
VOH
ISOURCE = 800µA, 4.5V < VCC < 5.5V
VOL
ISINK = 3.2mA, 4.5V < VCC < 5.5V
VOH
ISOURCE=500µA, VRS(MAX) < VCC < 4.5V
VOL
ISINK =1.2mA, VRS(MAX) < VCC < 4.5V
50
-150
150
µA
-50
VCC - 1.5
0.4
V
0.8VCC
0.3
1.2
1.25
1.3
V
-25
0.01
25
nA
VCC - 1.5
0.4
V
0.8VCC
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
0.3
10 of 16
ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Package Dimensions
MicroSO(8-pin)
Inches
Millimeters
Min
Max
Min
Max
A
-
0.0433
-
1.10
A1
0.0020
0.0059
0.050
0.15
A2
0.0295
0.0374
0.75
0.95
b
0.0098
0.0157
0.25
0.40
C
0.0051
0.0091
0.13
0.23
D
0.1142
0.1220
2.90
3.10
e
0.0256
0.65BS
E
0.193B
4.90BS
E1
0.1142
0.1220
2.90
3.10
L
0.0157
0.0276
0.40
0.70
a
0°
6°
0°
6°
SO(8-pin)
Inches
Millimeters
Min
Max
Min
Max
A
0.053
0.069
1.35
1.75
A1
0.004
0.010
0.10
0.25
B
0.013
0.020
0.33
0.51
C
0.007
0.010
0.19
0.25
e
0.050
E
0.150
0.157
1.27
3.80
4.00
H
0.228
0.244
5.80
6.20
L
0.016
0.50
0.40
1.27
D
0.189
0.197
4.80
2.00
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Plastic DIP(8-pin)
Inches
Millimeters
Min
Max
Min
Max
A
-
A1
0.015
0.210
-
5.33
-
0.38
-
A2
0.115
0.195
2.92
4.95
b
0.014
0.022
0.36
0.56
b2
0.045
0.070
1.14
1.78
b3
0.030
0.045
0.080
1.14
D
0.355
0.400
9.02
10.16
D1
0.005
-
0.13
-
E
0.300
0.325
7.62
8.26
E1
0.240
0.280
6.10
7.11
e
0.100
-
2.54
eA
0.300
-
7.62
-
10.92
2.92
3.81
eB
-
0.430
eC
-
0.060
L
0.115
0.150
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
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ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
October 2003
rev 1.0
Ordering Codes
Part Number
Package
Operating
Temperature
Range (°C)
Reset
Threshold
Reset Polarity
Watchdog
Timer
ASM706PCPA
8- Plastic DIP
0 to +70
2.63
HIGH
YES
ASM706PCSA
8-SO
0 to +70
2.63
HIGH
YES
ASM706PCUA
8-MicroSO
0 to +70
2.63
HIGH
YES
ASM706PEPA
8-Plastic DIP
-40 to +85
2.63
HIGH
YES
ASM706PESA
8-SO
-40 to +85
2.63
HIGH
YES
ASM706RCPA
8- Plastic DIP
0 to +70
2.63
LOW
YES
ASM706RCSA
8-SO
0 to +70
2.63
LOW
YES
ASM706RCUA
8-MicroSO
0 to +70
2.63
LOW
YES
ASM706REPA
8-Plastic DIP
-40 to +85
2.63
LOW
YES
ASM706RESA
8-SO
-40 to +85
2.63
LOW
YES
ASM706SCPA
8- Plastic DIP
0 to +70
2.93
LOW
YES
ASM706SCSA
8-SO
0 to +70
2.93
LOW
YES
ASM706SCUA
8-MicroSO
0 to +70
2.93
LOW
YES
ASM706SEPA
8-Plastic DIP
-40 to +85
2.93
LOW
YES
ASM706SESA
8-SO
-40 to +85
2.93
LOW
YES
ASM706TCPA
8- Plastic DIP
0 to +70
3.08
LOW
YES
ASM706TCSA
8-SO
0 to +70
3.08
LOW
YES
ASM706TCUA
8-MicroSO
0 to +70
3.08
LOW
YES
ASM706TEPA
8-Plastic DIP
-40 to +85
3.08
LOW
YES
ASM706TESA
8-SO
-40 to +85
3.08
LOW
YES
ASM706JCPA
8- Plastic DIP
0 to +70
4.00
LOW
YES
ASM706JCSA
8-SO
0 to +70
4.00
LOW
YES
ASM706JCUA
8-MicroSO
0 to +70
4.00
LOW
YES
ASM706JEPA
8-Plastic DIP
-40 to +85
4.00
LOW
YES
ASM706JESA
8-SO
-40 to +85
4.00
LOW
YES
ASM708RCPA
8- Plastic DIP
0 to +70
2.63
Dual: HIGH & LOW
NO
ASM708RCSA
8-SO
0 to +70
2.63
Dual: HIGH & LOW
NO
ASM708RCUA
8-MicroSO
0 to +70
2.63
Dual: HIGH & LOW
NO
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
13 of 16
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October 2003
rev 1.0
Part Number
Package
Operating
Temperature
Range (°C)
Reset
Threshold
Reset Polarity
Watchdog
Timer
ASM708REPA
8-Plastic DIP
-40 to +85
2.63
Dual: HIGH & LOW
NO
ASM708RESA
8-SO
-40 to +85
2.63
Dual: HIGH & LOW
NO
ASM708SCPA
8- Plastic DIP
0 to +70
2.93
Dual: HIGH & LOW
NO
ASM708SCSA
8-SO
0 to +70
2.93
Dual: HIGH & LOW
NO
ASM708SCUA
8-MicroSO
0 to +70
2.93
Dual: HIGH & LOW
NO
ASM708SEPA
8-Plastic DIP
-40 to +85
2.93
Dual: HIGH & LOW
NO
ASM708SESA
8-SO
-40 to +85
2.93
Dual: HIGH & LOW
NO
ASM708TCPA
8- Plastic DIP
0 to +70
3.08
Dual: HIGH & LOW
NO
ASM708TCSA
8-SO
0 to +70
3.08
Dual: HIGH & LOW
NO
ASM708TCUA
8-MicroSO
0 to +70
3.08
Dual: HIGH & LOW
NO
ASM708TEPA
8-Plastic DIP
-40 to +85
3.08
Dual: HIGH & LOW
NO
ASM708TESA
8-SO
-40 to +85
3.08
Dual: HIGH & LOW
NO
ASM708JCPA
8- Plastic DIP
0 to +70
4.00
Dual: HIGH & LOW
NO
ASM708JCSA
8-SO
0 to +70
4.00
Dual: HIGH & LOW
NO
ASM708JCUA
8-MicroSO
0 to +70
4.00
Dual: HIGH & LOW
NO
ASM708JEPA
8-Plastic DIP
-40 to +85
4.00
Dual: HIGH & LOW
NO
ASM708JESA
8-SO
-40 to +85
4.00
Dual: HIGH & LOW
NO
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
14 of 16
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ASM708 R/ S/ T/ J
October 2003
rev 1.0
Feature Summary
ASM706P
ASM706R
ASM706S
ASM706
T
ASM706J
ASM708R
ASM708S
ASM708T
ASM708J
Power fail
detector
‹
‹
‹
‹
‹
‹
‹
‹
‹
Brownout
detection
‹
‹
‹
‹
‹
‹
‹
‹
‹
Debounced
Manual
RESET
‹
‹
‹
‹
‹
‹
‹
‹
‹
Power-up/
down RESET
‹
‹
‹
‹
‹
‹
‹
‹
‹
Watchdog
Timer
‹
‹
‹
‹
‹
Active HIGH
RESET
‹
‹
‹
‹
‹
‹
‹
‹
‹
2.63
2.93
3.08
4.00
Active LOW
RESET
Active LOW
and HIGH
RESETs
RESET
Threshold (V)
2.63
2.63
2.93
3.08
4.00
3/3.3/4.0 V µP Supervisor Circuits
Notice: The information in this document is subject to change without notice
15 of 16
ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
Alliance Semiconductor Corporation
2575, Augustine Drive,
Santa Clara, CA 95054
Tel: 408 - 855 - 4900
Fax: 408 - 855 - 4999
www.alsc.com
Copyright © Alliance Semiconductor
All Rights Reserved
Part Number: ASM706 P/ R/ S/ T/ J
ASM708 R/ S/ T/ J
Document Version: 1.0
© Copyright 2003 Alliance Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or
registered trademarks of Alliance. All other brand and product names may be the trademarks of their respective companies. Alliance reserves the
right to make changes to this document and its products at any time without notice. Alliance assumes no responsibility for any errors that may
appear in this document. The data contained herein represents Alliance's best data and/or estimates at the time of issuance. Alliance reserves the
right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these
specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and
users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. Alliance does not assume any responsibility
or liability arising out of the application or use of any product described herein, and disclaims any express or implied warranties related to the sale
and/or use of Alliance products including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any
intellectual property rights, except as express agreed to in Alliance's Terms and Conditions of Sale (which are available from Alliance). All sales of
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convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellectual property rights of Alliance or third
parties. Alliance does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may
reasonably be expected to result in significant injury to the user, and the inclusion of Alliance products in such life-supporting systems implies that
the manufacturer assumes all risk of such use and agrees to indemnify Alliance against all claims arising from such use.
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