MAX810LW [NXP]
3-pin microprocessor resets; 3引脚微处理器复位
| 型号： | MAX810LW |
| 厂家： | 
NXP |
| 描述： | 3-pin microprocessor resets |
| 文件： | 总12页 (文件大小：92K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
MAX809/MAX810
3-pin microprocessor resets
Product data
2003 Aug 08
Supersedes data of 2002 Oct 21
Philips
Semiconductors
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
DESCRIPTION
FEATURES
The MAX809/MAX810 are single function microprocessor resets
used to monitor supply voltages in microprocessor and other logic
systems. They provide a reset signal to the microprocessor during
power-up, power-down, and brownout conditions. The reset signal is
asserted when the supply voltage drops below the preset threshold,
and the signal is released a set time after the supply voltage has
risen above the preset threshold.
• Monitors 5.0 V, 3.3 V and 3 V supplies
• 140 ms min. reset delay time:
– Active-LOW RESET output (MAX809)
– Active-HIGH RESET output (MAX810)
• Power supply transient immunity
The MAX809 has an active-LOW reset output while the MAX810
has an active-HIGH reset output.
• Guaranteed reset valid for 1.1 V
• Available in small SOT23 and SC70 3-pin packages
• No external components needed
The low supply current of typically 17 µA makes the
MAX809/MAX810 ideal for use in portable, battery operated
equipment. They are available in the 3-pin SOT23 and SC70
packages.
• Specified over full temperature range –40 °C to +105 °C
APPLICATIONS
• Embedded controllers
• Battery operated systems
• Wireless communication systems
• PDAs and handheld equipment
SIMPLIFIED SYSTEM DIAGRAMS
V
V
CC
CC
V
V
V
V
CC
CC
CC
CC
MICROPROCESSOR
MICROPROCESSOR
MAX809
MAX810
RESET
RESET INPUT
GND
RESET
RESET INPUT
GND
GND
GND
SL01642
SL01643
Figure 1. MAX809 simplified system diagram.
Figure 2. MAX810 simplified system diagram.
2
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
ORDERING INFORMATION
PACKAGE
TEMPERATURE
RANGE
TYPE NUMBER
NAME
DESCRIPTION
MAX809xD
MAX810xD
MAX809xW
SOT23-3
SOT23-3
SC70-3
SC70-3
plastic small outline package; 3 leads (see dimensional drawing)
plastic small outline package; 3 leads (see dimensional drawing)
plastic small outline package; 3 leads; body width 1.15 mm
plastic small outline package; 3 leads; body width 1.15 mm
–40 to +105 °C
–40 to +105 °C
–40 to +105 °C
–40 to +105 °C
MAX810xW
NOTE:
Each device has 7 voltage options, indicated by the ‘x’ on the ‘Type number’.
Part number
MAX809
Reset Threshold Voltage (Typical)
Part number
MAX810
Reset Threshold Voltage (Typical)
MAX809ZD,
MAX809ZW
2.32 V
2.63 V
2.93 V
3.08 V
4.00 V
4.38 V
4.63 V
MAX810ZD,
MAX810ZW
2.32 V
2.63 V
2.93 V
3.08 V
4.00 V
4.38 V
4.63 V
MAX809RD,
MAX809RW
MAX810RD,
MAX810RW
MAX809SD,
MAX809SW
MAX810SD,
MAX810SW
MAX809TD,
MAX809TW
MAX810TD,
MAX810TW
MAX809JD,
MAX809JW
MAX810JD,
MAX810JW
MAX809MD,
MAX809MW
MAX810MD,
MAX810MW
MAX809LD,
MAX809LW
MAX810LD,
MAX810LW
Marking code
Each device is marked with a four letter code. The first three letters designate the product. The fourth, represented by an ‘x’, designates the
date tracking code.
Part
Marking
Part
Marking
MAX809
MAX810
MAX809JD
MAX809LD
MAX809MD
MAX809RD, W
MAX809SD
MAX809TD
MAX809ZD
AMUx
AMVx
AMWx
AMXx
AMYx
AMZx
AMAx
MAX810LD
MAX810RD
MAX810SD
MAX810JD
MAX810MD
MAX810TD
MAX810ZD
ANTx
ANUx
ANVx
ANWx
ANXx
ANYx
ANZx
3
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
PINNING
GND
1
2
GND
1
2
3
V
3
V
CC
CC
MAX809
MAX810
RESET
RESET
SL01641
SL01644
Figure 3. MAX809 pin configuration.
Figure 4. MAX810 pin configuration.
MAX809 pin description
MAX810 pin description
PIN SYMBOL
DESCRIPTION
Device ground.
PIN SYMBOL
DESCRIPTION
Device ground.
1
2
3
GND
1
2
3
GND
RESET
Active-LOW reset signal.
Supply voltage input.
RESET
Active-HIGH reset signal.
Supply voltage input.
V
CC
V
CC
MAXIMUM RATINGS
SYMBOL
PARAMETER
Supply voltage
CONDITIONS
MIN.
–0.3
–0.3
–0.3
–
MAX.
6.0
UNIT
V
V
V
V
CC
Input voltage at RESET pin (MAX809)
Input voltage at RESET pin (MAX810)
V
V
+ 0.3
V
i(RESET)
i(RESET)
i(VCC)
o
CC
CC
+ 0.3
V
I
I
Input current at V pin
20
mA
mA
V/µs
°C
CC
Output current
–
20
Rate of rise at V
–
100
CC
T
amb
Ambient temperature
Storage temperature
Power dissipation
–40
–65
–
+105
+150
320
T
stg
°C
P
Derate 4 mW/°C above T
= 70 °C
mW
amb
4
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
ELECTRICAL CHARACTERISTICS
V
V
= full range (T
= –40 °C to +105 °C) unless otherwise noted; typical values are at T
= +25 °C, and V = 5 V (J/L/M versions),
amb CC
CC
amb
= 3.3 V (T/S versions), V = 3 V (R version), and V = 2.5 V (Z version) (Note 1).
CC
CC
CC
SYMBOL
PARAMETER
CONDITIONS
MIN.
1.0
1.2
–
TYP.
–
MAX.
5.5
UNIT
V
T
= 0 °C to +70 °C
V
CC
range
amb
T
amb
= –40 °C to +105 °C
–
5.5
V
MAX809J/L/M
MAX810J/L/M
V
T
amb
< 5.5 V;
= –40 °C to +85 °C
24
60
µA
I
Supply current (SOT23-3)
CC
CC
MAX809R/S/T/Z
MAX810R/S/T/Z
V
T
amb
< 3.6 V;
= –40 °C to +85 °C
–
–
–
–
–
–
–
17
–
50
100
100
35
µA
µA
µA
µA
µA
µA
µA
CC
MAX809J/L/M
MAX810J/L/M
V
CC
< 5.5 V;
= +85 °C to +105 °C
T
amb
MAX809R/S/T/Z
MAX810R/S/T/Z
V
CC
< 3.6 V;
= +85 °C to +105 °C
–
T
amb
MAX809J/L/M
MAX810J/L/M
V
CC
< 5.5 V;
= –40 °C to +85 °C
24
17
–
I
Supply current (SC70-3)
CC
T
amb
MAX809R/S/T/Z
MAX810R/S/T/Z
V
CC
< 3.6 V;
= –40 °C to +85 °C
30
T
amb
MAX809J/L/M
MAX810J/L/M
V
CC
< 5.5 V;
= +85 °C to +105 °C
60
T
amb
MAX809R/S/T/Z
MAX810R/S/T/Z
V
CC
< 3.6 V;
= +85 °C to +105 °C
–
60
T
amb
T
= +25 °C
2.28
2.25
2.22
2.59
2.55
2.50
2.89
2.85
2.78
3.04
3.00
2.92
3.93
3.89
3.80
4.31
4.25
4.16
4.56
4.50
4.40
–
2.32
–
2.35
2.38
2.42
2.66
2.70
2.76
2.96
3.00
3.08
3.11
3.15
3.23
4.06
4.10
4.20
4.45
4.50
4.56
4.70
4.75
4.86
–
V
V
th
RESET threshold voltage
(SOT23-3 and SC70-3)
MAX809Z
MAX810Z
amb
T
amb
= –40 °C to +85 °C
= +85 °C to +105 °C
= +25 °C
V
T
amb
–
V
T
amb
2.63
–
V
MAX809R
MAX810R
T
amb
= –40 °C to +85 °C
= +85 °C to +105 °C
= +25 °C
V
T
amb
–
V
T
amb
2.93
–
V
MAX809S
MAX810S
T
amb
= –40 °C to +85 °C
= +85 °C to +105 °C
= +25 °C
V
T
amb
–
V
T
amb
3.08
–
V
MAX809T
MAX810T
T
amb
= –40 °C to +85 °C
= +85 °C to +105 °C
= +25 °C
V
T
amb
–
V
T
amb
4.00
–
V
MAX809J
MAX810J
T
amb
= –40 °C to +85 °C
= +85 °C to +105 °C
= +25 °C
V
T
amb
–
V
T
amb
4.38
–
V
MAX809M
MAX810M
T
amb
= –40 °C to +85 °C
= +85 °C to +105 °C
= +25 °C
V
T
amb
–
V
T
amb
4.63
–
V
MAX809L
MAX810L
T
amb
= –40 °C to +85 °C
= +85 °C to +105 °C
V
V
T
amb
–
Reset threshold temperature
coefficient
30
ppm/°C
V
to RESET delay
V
T
= V to (V – 100 mV)
–
20
240
–
–
µs
ms
ms
ms
ms
CC
CC
th
th
= –40 °C to +85 °C
= +85 °C to +105 °C
= –40 °C to +85 °C
= +85 °C to +105 °C
140
100
140
100
560
840
460
840
RESET active time-out period
(SOT23-3)
amb
T
amb
T
amb
240
–
RESET active time-out period
(SC70-3)
T
amb
5
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
0.3
0.4
0.3
–
UNIT
V
MAX809R/S/T/Z
MAX809J/L/M
MAX809
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
> V
> V
; I
th(min) sink
= 1.2 mA
= 3.2 mA
–
–
–
–
–
–
–
–
–
–
–
V
LOW-level output voltage
on RESET pin
OL(RESET)
; I
V
th(min) sink
> 1.0 V; I
> V
= 50 µA
V
sink
MAX809R/S/T/Z
MAX809J/L/M
MAX810R/S/T/Z
MAX810J/L/M
MAX810
; I
= 500 µA 0.8 × V
V
V
V
V
HIGH-level output voltage
on RESET pin
th(max) source
CC
OH(RESET)
OL(RESET)
OH(RESET)
> V
> V
> V
; I
= 800 µA
V
– 1.5
–
V
th(max) source
CC
; I
= 1.2 mA
= 3.2 mA
–
0.3
0.4
–
V
LOW-level output voltage
on RESET pin
th(max) sink
; I
–
V
th(max) sink
HIGH-level output voltage
on RESET pin
1.8 V < V > V
;
0.8 × V
CC
V
CC
= 150 µA
th(min)
I
source
NOTES:
1. Production testing done at T
= +25 °C; limits over temperature guaranteed by design.
amb
2. RESET output for MAX809; RESET output for MAX810.
6
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
APPLICATION INFORMATION
relatively large resistor from RESET to ground as shown in Figure 6.
100 kΩ is small enough to provide a path for any leakage currents to
flow to ground (holding RESET LOW); while it is large enough not to
load RESET. Conversely, a 100 kΩ pull-up resistor is recommended
Detailed description
A microprocessor reset ensures that the microprocessor starts in a
known and safe state. The reset asserts a reset signal to prevent
code execution errors during power up, power down, or brownout
conditions.
for MAX810 if RESET is required to remain valid for V < 1 V.
CC
A reset must assert an output within a predictable range of the
supply voltage. The common threshold voltage range is between 5%
and 10% of the nominal supply voltage. MAX809/MAX810 have
4.63 V, 3.08 V and 2.63 V options for 5 V, 3.3 V and 3.0 V supplies
respectively. They have high accuracy (within ±3%) that ensures
that the reset thresholds occur within the safe operating range.
Whenever the supply voltage falls below the reset threshold, the
reset signal is asserted. It remains asserted for at least 140 ms after
the supply voltage rises above the threshold. At this point the reset
is released. This delay time helps ensure valid reset signals despite
erratic changes in supply voltage. The MAX809/MAX810 have a
push-pull output stage and do not require a pull-up resistor.
V
CC
V
V
CC
CC
RESET
RESET
MAX809
MICROPROCESSOR
100 kΩ
Negative-going V transients
CC
GND
GND
The MAX809/MAX810 are relatively immune to short negative-going
V
CC
transients and glitches. Figure 5 shows the maximum pulse
width a negative-going transient can have without causing a reset
signal. As the magnitude of the transient increases below the reset
threshold, the maximum allowable pulse width decreases. Typically,
for the 4.0 V, 4.38 V, and 4.63 V versions of the MAX809/MAX810, a
SL01726
Figure 6. RESET valid to V = 0 V circuit.
CC
V
CC
transient that goes 100 mV below the reset threshold and lasts
20 µs or less will not cause a reset signal. To provide additional
transient rejection, connect a 10 nF bypass capacitor as close as
Interfacing to microprocessors with bi-directional
reset pins
possible to the V pin.
CC
Microprocessors with bi-directional reset I/Os, such as the Motorola
68HC11 series, can be connected to the MAX809 RESET output. To
ensure a correct output on the MAX809, even when the
microprocessor reset I/O is in the opposite state, connect a 4.7 kΩ
resistor between the reset pins as shown in Figure 7. This allows the
microprocessor to issue commands to the system regardless of the
state of the RESET. The bi-directional microprocessor reset
functions both as a driven reset input and as an active reset driver.
450
400
350
300
250
200
150
V
CC
MAX809/MAX810J/L/M
100
MAX809/
MAX810R/S/T/Z
50
0
V
V
CC
CC
1
10
100
1000
4.7 kΩ
RESET
RESET
RESET COMPARATOR OVERDRIVE, V – V (mV)
th
CC
SL01728
MAX809
MOTOROLA
68HCxx
Figure 5. Maximum transient duration without causing a
reset pulse versus reset comparator overdrive.
GND
GND
Ensuring a valid reset output down to V = 0 V
CC
When V falls below 1 V, the MAX809 RESET no longer sinks
CC
SL01727
current (i.e., it becomes open circuit). A high impedance CMOS
logic input connected to RESET can drift to undetermined voltages.
In most applications in which the microprocessor circuitry is
inoperative below 1 V, this will not represent a problem. However, in
applications in which RESET must be valid down to 0 V, use a
Figure 7. Interfacing to microprocessor with bi-directional
reset I/O
7
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
PACKING METHOD
The MAX809 and MAX810 are packed in reels, as shown in Figure 8.
GUAR
D
BAND
TAPE
TAPE DETAIL
REEL
AS-
COVER TAPE
SEMBLY
CARRIER TAPE
BAR-
CODE
LABEL
BOX
SL01305
Figure 8. Tape and reel packing method.
8
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
SOT23-3: plastic small outline package; 3 leads; body width 1.5 mm
3
1
2
0.15
0.05
1.2
1.0
0.50
0.25
0.22
0.08
3.00
2.70
1.70
1.50
0.55
0.35
10°
0°
0.25
1.35
9
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
SC70-3: plastic small outline package; 3 leads; body width 1.15 mm
1.0
0.8
0.4
0.225
2.1
1.9
0.4
0.1
0.25 0.10
10
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
REVISION HISTORY
Rev
Date
Description
_3
20030808
Product data (9397 750 11889); ECN 853–2355 30184 dated 04 August 2003.
Supersedes MAX809_MAX810_2 of 2002 Oct 21 (9397 750 10584).
Modifications:
• Add ‘Marking code’ table to Ordering information on page 3.
• SOT23–3 package outline on page 9 corrected.
_2
_1
20021021
20020620
Product data (9397 750 10584); ECN 853–2355 29047 dated 14 October 2002.
Supersedes MAX809_MAX810_1 of 2002 June 20 (9397 750 10213).
Product data (9397 750 10213); ECN 853–2355 28505 dated 20 June 2002.
11
2003 Aug 08
Philips Semiconductors
Product data
3-pin microprocessor resets
MAX809/MAX810
Data sheet status
Product
status
Definitions
[1]
Level
Data sheet status
[2] [3]
I
Objective data
Development
Qualification
This data sheet contains data from the objective specification for product development.
Philips Semiconductors reserves the right to change the specification in any manner without notice.
II
Preliminary data
Product data
This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
III
Production
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL
http://www.semiconductors.philips.com.
[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limitingvaluesdefinition— Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given
in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no
representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be
expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree
to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to make changes in the products—including circuits, standard cells, and/or software—described
or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated
viaaCustomerProduct/ProcessChangeNotification(CPCN).PhilipsSemiconductorsassumesnoresponsibilityorliabilityfortheuseofanyoftheseproducts,conveys
nolicenseortitleunderanypatent, copyright, ormaskworkrighttotheseproducts, andmakesnorepresentationsorwarrantiesthattheseproductsarefreefrompatent,
copyright, or mask work right infringement, unless otherwise specified.
Koninklijke Philips Electronics N.V. 2003
Contact information
All rights reserved. Printed in U.S.A.
For additional information please visit
http://www.semiconductors.philips.com.
Fax: +31 40 27 24825
Date of release: 08-03
9397 750 11889
For sales offices addresses send e-mail to:
sales.addresses@www.semiconductors.philips.com.
Document order number:
Philips
Semiconductors
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