CAT706VI-GT3 [ONSEMI]
uP Supervisory Circuits; U＆ P监控电路
| 型号： | CAT706VI-GT3 |
| 厂家： | 
ONSEMI |
| 描述： | uP Supervisory Circuits |
| 文件： | 总12页 (文件大小：137K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CAT705, CAT706, CAT813
mP Supervisory Circuits
Description
The CAT705, CAT706, and CAT813 provide reset and monitoring
functions for the electronic systems. Each device monitors the system
voltage and maintains a reset output until that voltage reaches the
device’s specified trip value and then maintains the reset output active
condition until the device’s internal timer allows the system power
supply to stabilize.
http://onsemi.com
The devices have a watchdog input which can be used to monitor a
system signal and causes WDO to go low if the signal fails to change
state prior to a timeout condition.
The supervisory circuits provide a MR input which initiates a reset if
pulled low. The CAT705 and CAT706 provide an active low RESET
output. The CAT813 provides an active high RESET output.
There is a secondary supply monitor (PFI) included for power−fail
warning.
SOIC−8
V SUFFIX
CASE 751BD
MSOP−8
Z SUFFIX
CASE 846AD
PIN CONFIGURATIONS AND
MARKING DIAGRAMS
Features
SOIC−8 (V) (Top View)
1
• Reset Guaranteed Valid for 1.0 V V
CC
WDO
RESET *
WDI
MR
• 6 mA Supply Current
V
CC
• 200 ms Reset Pulse Width
GND
PFO
PFI
• Watchdog Timer Function 1.6 s Timeout
• Accurate Brownout Detection Reset in 3.0, 3.6, and 5.0 Volt Systems
• Secondary Low Supply Monitoring on PFI Input
• Pin and Function Compatible with the
MAX705/MAX706/MAX813L Products
• Operating Range from −40°C to +85°C
• SOIC 8−lead and MSOP 8−lead Packages
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
L
4
A
= Assembly Location Code
= Lead Finish NiPdAu
= Product Revision: Fixed as “A”
CATxxxV = Specific Device Code
= (CAT705V = CAT705 SOIC)
= (CAT706V = CAT706 SOIC)
= (CAT813V = CAT813 SOIC)
I
Y
M
= Temperature Range (I = Industrial)
= Production Year (Last Digit)
= Production Month (1−9, O, N, D)
ALND = Last Four Assembly Lot Number Digits
Typical Applications
MSOP−8 (Z) (Top View)
1
• Microprocessor and Microcontroller Based Systems
• Instrument and Control Systems
• Portable Equipment
WDI
PFO
PFI
RESET *
WDO
MR
GND
V
CC
ABRx = Specific Device Code
= (ABRT = CAT705 MSOP)
= (ABRT = CAT706 MSOP)
= (ABRS = CAT813 MSOP)
Y
M
Z
= Production Year (Last Digit)
= Production Month (1−9, O, N, D)
= Product Revision
(* RESET for CAT813)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
1
Publication Order Number:
April, 2012 − Rev. 7
CAT705/D
CAT705, CAT706, CAT813
V
CC
R
MR
= 60 kW
MR
RESET
RESET
(RESET for CAT813)
CONTROLLER
+
V
CC
−
V
TIMER
RST
WATCHDOG
TRANSITION
DETECTION
WATCHDOG
TIMER
WDI
PFI
WDO
PFO
+
−
1.25 V
Figure 1. Functional Block Diagram
Device
CAT705
CAT706
CAT813
RESET
RESET
MR
x
WDI
WDO
PFI
@ 4.65 V
x
x
x
x
x
x
x
@ 1.25 V
@ 1.25 V
@ 1.25 V
x
@ 4.65 V
x
http://onsemi.com
2
CAT705, CAT706, CAT813
Table 1. PIN FUNCTION DESCRIPTION
Pin Name
Function
MR
Manual Reset Input
Power Supply
Ground
V
CC
GND
PFI
Power Fail voltage monitor Input
PFO
Power Fail Output
WDI
Watchdog Timer Input
RESET
RESET
WDO
CMOS Push−Pull Active Low Reset Output (CAT705 & CAT706)
CMOS Push−Pull Active High Reset Output (CAT813)
Watchdog Timer Output
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameters
Ratings
Units
V
Supply Voltage
6.5
All other pins
−0.3 to (V + 0.3)
V
CC
Output Current RESET, RESET, WDO
20
mA
mW
Continuous Power Dissipations (T = +70°C)
A
SOIC 8−lead (derate 5.9 mW/°C above +70°C)
471
330
MSOP 8−lead (derate 4.1 mW/°C above +70°C)
Storage Temperature
−65 to 150
+300
°C
°C
V
Lead Soldering (10 seconds max)
ESD Rating: Human Body Model
ESD Rating: Machine Model
2000
200
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 3. RECOMMENDED OPERATING CONDITIONS
Parameter
Rating
Unit
V
V
CC
(T = −40°C to +85°C)
A
1.0 to 5.5
All Other Pins
−0.1 to (V + 0.1)
V
CC
Ambient Temperature
−40 to +85
°C
http://onsemi.com
3
CAT705, CAT706, CAT813
Table 4. ELECTRICAL OPERATING CHARACTERISTICS (Typical values at T = 25°C and V = 5 V for CAT705, CAT706 and
A
CC
CAT813 versions. V = 3.3 V for the CAT706 T/S versions; V = 3.0 V for the CAT706 R version.) (Note 1)
CC
CC
Parameter
Symbol
Test Conditions
Min
Typ
6
Max
17
Units
mA
Supply Current
I
CAT705, CAT706, CAT813
CAT706 (R/S/T Versions)
CAT705 & CAT813 at
CC
4
12
mA
Reset Threshold
V
4.50
4.65
4.75
V
RST
−40°C ≤ T ≤ +85°C
A
CAT706 at −40°C ≤ T ≤ +85°C
4.25
3.00
2.85
2.55
4.40
3.08
2.93
2.63
40
4.50
3.15
3.00
2.70
V
V
A
CAT706T at −40°C ≤ T ≤ +85°C
A
CAT706S at −40°C ≤ T ≤ +85°C
V
A
CAT706R at −40°C ≤ T ≤ +85°C
V
A
Reset Threshold Tempco (Note 1)
ppm/°C
mV
mV
ms
Reset Threshold Hysteresis
(Note 1)
CAT705 & CAT813
CAT706
10
5
V
to Reset Delay (Note 2)
t
V
= V to (V – 100 mV)
20
CC
RD
CC
TH
TH
Reset Active Timeout Period
RESET Output High Voltage
t
140
200
400
ms
V
RP
V
CAT705 & CAT706, 4.5 V < V
<
<
V
−
CC
OH
CC
5.5 V, I
= −800 mA
1.5 V
SOURCE
CAT705 & CAT706, V
<
0.8 x V
CC
RST (max)
= −500 mA
V
< 3.6 V, I
CC
SOURCE
RESET Output Low Voltage
V
CAT705 & CAT706, 4.5 V < V
0.4
0.3
0.3
V
OL
CC
5.5 V, I
= 3.2 mA
SINK
CAT705 & CAT706, V
<
RST (max)
V
< 3.6 V, I
= 1.2 mA
CC
SINK
CAT705 &CAT706, V = 1 V,
CC
I
= 100 mA
SINK
RESET Output High Voltage
RESET Output Low Voltage
V
CAT813, V = V
SOURCE
,
,
V −
CC
V
V
OH
CC
RST max
I
= −120 mA
1.5 V
CAT813, V = V
SOURCE
0.8 x V
CC
RST max
CC
I
= −30 mA
V
CAT813, V = V ,
RST min
0.4
0.3
OL
CC
= 3.2 mA
I
SINK
CAT813, V = 1.2 V,
CC
= 100 mA
I
SINK
WATCHDOG INPUT
Watchdog Timeout Period
WDI Pulse Width
t
1.00
50
1.6
2.25
0.3 x V
150
s
ns
V
WD
t
V = 0.4 V, V = 0.8 x V
IL IH CC
WP
WDI Input Voltage (Note 3)
V
IL
CC
V
0.7 x V
IH
CC
WDI Input Current (Note 3)
WDI = V , Time Average
50
mA
CC
WDI = 0 V, Time Average
−150
−50
1. Limits are guaranteed by design and not production tested.
2. The RESET short−circuit current is the maximum pull−up current when reset is driven low by a bidirectional output.
3. WDI is internally serviced within the watchdog period if WDI is left open.
4. RESET for CAT705 & CAT706 & RESET for CAT813.
5. Not 100% tested but guaranteed by design.
http://onsemi.com
4
CAT705, CAT706, CAT813
Table 4. ELECTRICAL OPERATING CHARACTERISTICS (Typical values at T = 25°C and V = 5 V for CAT705, CAT706 and
A
CC
CAT813 versions. V = 3.3 V for the CAT706 T/S versions; V = 3.0 V for the CAT706 R version.) (Note 1)
CC
CC
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
WATCHDOG INPUT
WDO Output Voltage
V
V
< V < 3.6 V;
0.8 x V
CC
V
W_OH
RST (max)
CC
I
= −500 mA
SOURCE
4.5 V < V < 5.5 V,
SOURCE
V
– 1.5
V
– 0.25
CC
CC
CC
I
= −800 mA
V
V
SINK
< V < 3.6 V,
0.3
0.4
W_OL
WDSU
RST (max)
CC
I
= +500 mA
4.5 V < V < 5.5 V,
0.1
CC
= 1.2 mA
I
SINK
WDO to WDI setup time (Note 5)
MANUAL RESET INPUT
MR Input Voltage
t
250
ns
V
V
0.3 x V
140
IL
CC
V
0.7 x V
IH
CC
MR Pull−up Current
MR Pulse Width
MR = 0 V
40
1
70
60
mA
ms
t
PB
MR Pull−up Resistance
MR low to Reset Delay (Note 4)
POWER−FAIL INPUT
PFI Input Threshold
PFI Input Current
R
MR
40
80
5
kW
ms
t
PDLY
V
= 5 V
1.2
1.25
0.01
1.3
25
V
nA
V
CC
−25
PFO Output Voltage
V
V
< V < 3.6 V,
0.8 x V
CC
P_OH
RST(max)
CC
I
= −500 mA
SOURCE
4.5 V < V < 5.5 V,
SOURCE
V
CC
1.5
−
0.4
0.3
0.4
CC
I
= −800 mA
V
V
SINK
< V < 3.6 V,
RST (max) CC
P_OL
I
= +1.2 mA
4.5 V < V < 5.5 V, I
= 3.2 mA
CC
SINK
1. Limits are guaranteed by design and not production tested.
2. The RESET short−circuit current is the maximum pull−up current when reset is driven low by a bidirectional output.
3. WDI is internally serviced within the watchdog period if WDI is left open.
4. RESET for CAT705 & CAT706 & RESET for CAT813.
5. Not 100% tested but guaranteed by design.
http://onsemi.com
5
CAT705, CAT706, CAT813
TYPICAL PERFORMANCE CHARACTERISTICS
9
8
7
6
5
4
3
1.06
1.04
1.02
1.00
0.98
0.96
0.94
2
1
−40 −20
0
20
40
60
80
100
120
−40
−20
0
20
40
60
80
100
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 2. VCC Supply Current vs. Temperature
Figure 3. Normalized Reset Threshold Voltage
vs. Temperature
FUNCTIONAL DESCRIPTION
Processor Reset
Manual Reset
The CAT705, CAT706 & CAT813 detect supply voltage
The CAT705, CAT706 & CAT813 each have a Manual
Reset (MR) input to allow for alternative control of the reset
outputs. The MR input is designed for direct connection to
a pushbutton (see Figure 4). The MR input is internally
pulled up by 60 kW resistor and must be pulled low to cause
the reset output to go active. Internally, this input is
debounced and timed such that RESET (or RESET) signals
of at least 140 ms minimum will be generated. The min
(V ) conditions that are below the specified voltage trip
CC
value (V ) and provide a reset output to maintain correct
RST
system operation. On power−up, RESET (or RESET for the
CAT813) are kept active for a minimum delay t of 140 ms
RP
after the supply voltage (V ) rises above V
to allow the
CC
RST
power supply and processor to stabilize. When V drops
CC
below the voltage trip value (V ), the reset output signals
RST
RESET (or RESET) are pulled active. RESET (or RESET)
is specifically designed to provide the reset input signals for
processors. This provides reliable and consistent operation
as power is turned on, off or during brownout conditions by
maintaining the processor operation in known conditions.
140 ms t delay commences as the Manual Reset input is
released from the low level. (see Figure 5).
RP
MR
WDO
V
RESET/RESET
WDI
CC
CAT705
CAT706
CAT813
GND
PFI
PFO
Figure 4. Pushbutton RESET
t
PB
MR
t
PDLY
V
IH
V
IL
t
RP
RESET
RESET
V
OH
V
OL
Figure 5. Timing Diagram – Pushbutton RESET
http://onsemi.com
6
CAT705, CAT706, CAT813
WATCHDOG TIMER
The CAT705, CAT706, & CAT813 provide a Watchdog
used to strobe the watchdog input. The most reliable is a
dedicated I/O output transitioned by a specific software
instruction.
input (WDI). The watchdog timer function controls the
watchdog output (WDO) signal and forces the WDO to be
low (active) when the WDI input does not have a transition
from low−to−high or high−to−low within 1.6 s typical. If a
transition occurs on the WDI input pin prior to the watchdog
time−out, the watchdog timer is restarted. The timing
diagram is shown in Figure 6. The watchdog timer starts as
soon as reset condition becomes inactive.
The watchdog can be disabled by floating (or tri−stating)
the WDI input (see Figure 8). If the watchdog is disabled the
th
WDI pin will be pulled low for the first 7/8 ’s of the
th
watchdog period (t ) and pulled high for the last 1/8 of
WD
the watchdog period. This pulling low of the WDI input and
then high is used to detect an open or tri−state condition and
will continue to repeat until the WDI input is driven high or
low.
For most efficient operation of devices with the watchdog
function the WDI input should be held low the majority of
the time and only strobed high as required to reset the
watchdog timer.
When the V supply drops below the reset threshold, the
CC
WDO output becomes active and goes low independently of
the watchdog timing stage.
Figure 7 below shows a typical implementation of a
watchdog function. Any processor signal that repeats
dependant on the normal operation of the processor or
directed by the software operating on the processor can be
t
t
WDSU
WP
t
t
t
WD
WD
WD
+5 V
0 V
WDI
WDO
+5 V
0 V
+5 V
0 V
RESET
RESET EXTERNALLY
TRIGGERED BY MR
t
RS
+5 V
0 V
(RESET)
(() Are for CAT813 Only)
Figure 6. Watchdog Timing Diagram
PIC
mC
MR
WDO
ADDRESS
DECODER
MCLR
V
RESET/RESET
WDI
CC
GND
PFI
CAT705
CAT706
CAT813
PFO
Figure 7. Watchdog Timer Circuit
http://onsemi.com
7
CAT705, CAT706, CAT813
V
Tristate
CC
MR
WDO
mC
V
RESET/RESET
CC
150 kW
CAT705
CAT706
CAT813
GND
PFI
WDI
PFO
OUTPUT
110 kW
Figure 8. Watchdog Disable Circuit
V
CC
V
(MAX)
RST
V
RST
V
(MIN)
RST
t
RD
RESET (CAT705 & CAT706)
V
RESET Slews with V
OH
CC
V
RESET (CAT813)
OL
Figure 9. Timing Diagram – Power Down
V
(MAX)
RST
V
RST
V
(MIN)
RST
V
CC
t
RP
RESET (CAT705 & CAT706)
V
OH
V
OL
RESET (CAT813)
Figure 10. Timing Diagram – Power Up
http://onsemi.com
8
CAT705, CAT706, CAT813
APPLICATION NOTES
mP’s with Bidirectional Reset Pins
These issues can usually be remedied by the proper location
of bypass capacitance on the circuit board.
The RESET output can be pulled low by processors like
the 68HC11 allowing for a system reset issued by the
processor. The maximum pullup current that can be sourced
by the CAT705 & CAT706 1.5 mA (and by the CAT706
T/R/S is 800 mA) allowing the processor to pull the output
low even when the CAT70x is pulling it high.
Output Valid Conditions
The RESET output uses a push−pull output which can
maintain a valid output down to a V of 1.0 volts. To sink
CC
current below 0.8 V a resistor can be connected from
RESET to Ground (see Figure 11.) This arrangement will
maintain a valid value on the RESET output during both
power up and down but will draw current when the RESET
output is in the high state. A resistor value of about 100 kW
should be adequate in most situations to maintain a low
Power Transients
Generally short duration negative−going transients of less
than 2 ms on the power supply at V
minimum will not
RST
cause a reset condition. However the lower the voltage of the
transient the shorter the required time to cause a reset output.
condition valid output down to V equal to 1.0 V.
CC
mC
MR
WDO
V
RESET/RESET
CC
RESET/RESET
CAT705
CAT706
CAT813
GND
PFI
WDI
PFO
100 kW
Figure 11. RESET Valid for VCC < 1.0 V
5 V
Push Switch
mC
VCC
NMI
WDO
MR
UNREGULATED DC
V
RESET/RESET
WDI
CC
RESET/RESET
CAT705
CAT706
CAT813
GND
PFI
I/O LINE
PFO
INTERRUPT
Figure 12. Typical Operating Circuit
http://onsemi.com
9
CAT705, CAT706, CAT813
PACKAGE DIMENSIONS
SOIC 8, 150 mils
CASE 751BD−01
ISSUE O
SYMBOL
MIN
NOM
MAX
1.35
A
1.75
A1
b
0.10
0.33
0.19
4.80
5.80
3.80
0.25
0.51
0.25
5.00
6.20
4.00
c
E1
E
D
E
E1
e
1.27 BSC
h
0.25
0.40
0º
0.50
1.27
8º
L
PIN # 1
IDENTIFICATION
θ
TOP VIEW
D
h
A1
θ
A
c
e
b
L
SIDE VIEW
END VIEW
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MS-012.
http://onsemi.com
10
CAT705, CAT706, CAT813
PACKAGE DIMENSIONS
MSOP 8, 3x3
CASE 846AD−01
ISSUE O
SYMBOL
MIN
NOM
MAX
A
A1
A2
b
1.10
0.15
0.95
0.38
0.23
3.10
5.00
3.10
0.05
0.75
0.22
0.13
2.90
4.80
2.90
0.10
0.85
c
D
3.00
4.90
E
E1
E
E1
e
3.00
0.65 BSC
0.60
L
0.40
0.80
L1
L2
θ
0.95 REF
0.25 BSC
0º
6º
TOP VIEW
D
A2
A
DETAIL A
A1
e
b
c
SIDE VIEW
END VIEW
q
L2
Notes:
L
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-187.
L1
DETAIL A
http://onsemi.com
11
CAT705, CAT706, CAT813
Example of Ordering Information (Notes 6 − 8)
Quantity per
Reel (Note 9)
Order Number
CAT705VI−GT3
CAT705ZI−GT3
Voltage
Top Mark
CAT705V
ABRT
Manual Reset
Reset Output
Package
SOIC−8
MSOP−8
4.65
Yes
LOW
CAT706RVI−GT3
CAT706RZI−GT3
CAT706SVI−GT3
CAT706SZI−GT3
CAT706TVI−GT3
CAT706TZI−GT3
CAT706VI−GT3
CAT706ZI−GT3
CAT706V
ABRT
SOIC−8
MSOP−8
SOIC−8
MSOP−8
SOIC−8
MSOP−8
SOIC−8
MSOP−8
2.63
2.93
3.08
4.40
Yes
Yes
Yes
Yes
LOW
LOW
LOW
LOW
CAT706V
ABRT
3,000
CAT706V
ABRT
CAT706V
ABRT
CAT813VI−GT3
CAT813ZI−GT3
CAT813V
ABRS
SOIC−8
4.65
Yes
HIGH
MSOP−8
6. All packages are RoHS−compliant (Lead−free, Halogen−free).
7. The standard lead finish is NiPdAu.
8. Contact factory for package availability.
9. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
For additional information, please contact your local
Sales Representative
CAT705/D
相关型号：
©2020 ICPDF网 联系我们和版权申明