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INTEGRATED CIRCUITS
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405 Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
Product data 2003 May 27
Philips Semiconductors
Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
DESCRIPTION
The MAX6400/MAX6401//MAX6402/MAX6403/MAX6404/MAX6405 microprocessor (P) reset circuits monitor power supplies in P and digital systems. These devices eliminate external components and adjustments while providing excellent circuit reliability and low cost solution. They are used to monitor 2.5 V, 3 V, 3.3 V and 5 V power supplies. A manual reset input is also available. MAX6400-MAX6405 assert a reset signal when the VDD supply voltage falls below a preset reset threshold voltage. The reset signal remains asserted for at least 100 ms after the VDD rises above the reset threshold. The reset threshold are factory trimmable from 2.2 V to 4.63 V in approximately 100 mV increments. All these parts are guaranteed to assert a reset for VDD down to 1 V. They have excellent immunity to fast transients on VDD. The devices vary in their output configuration. The MAX6400/MAX6403 have push-pull, active-LOW reset output; while the MAX6402/MAX6405 have open drain, active-LOW reset output. The MAX6401/MAX6404 have push-pull, active-HIGH reset output. The lower threshold MAX6400/MAX6401/MAX6402 have ultra-low supply current of typically 500 nA, making them ideal for battery powered applications. All six devices are available in the 4-bump Chip-Scale (WL-CSP4) package.
FEATURES
* Ultra-Low 1 A (max) supply current * Precision monitoring of 2.5 V, 3 V, 3.3 V, and 5 V power supply * Reset thresholds available from 2.2 V to 4.63 V * 2.5% threshold accuracy from -40 C to +85 C * 100 ms (min) Power-on-Reset delay time * Manual Reset input * Power transient immunity * Available in three versions: push-pull RESET, push-pull RESET, * Guaranteed reset valid to VDD = 1.0 V * Ultra-small 4-bump Chip-Scale packages
SIMPLIFIED SYSTEM DIAGRAM
and open-drain RESET voltages
APPLICATIONS
* PDAs and pagers * MP3 players * Portable/battery-powered equipment * Cellular phones
VDD
VDD RESET
RPU
VDD RESET MOTOROLA 68HCXX
MAX6402/MAX6405
MR PUSH-BUTTON RESET SWITCH GND
GND
SL01890
Figure 1. Simplified system diagram.
2003 May 27
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853-2428 29962
Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
ORDERING INFORMATION MAX6400/MAX6401/MAX6402
TYPE NUMBER MAX6400-XXUK MAX6401-XXUK MAX6402-XXUK PACKAGE NAME WL-CSP4 WL-CSP4 WL-CSP4 DESCRIPTION Wafer-level, chip-scale package; 4 bumps; surface mount Wafer-level, chip-scale package; 4 bumps; surface mount Wafer-level, chip-scale package; 4 bumps; surface mount TEMPERATURE RANGE -40 C to +85 C -40 C to +85 C -40 C to +85 C
NOTE: Each device has 5 standard voltage options, indicated by `XX' on the `Type number'. Additional voltage options may be available (see Table 1 for details). XX (type number suffix) 22 23 26 29 31 Reset threshold voltage (V) (Typical) 2.200 2.320 2.630 2.930 3.080
MAX6403/MAX6404/MAX6405
TYPE NUMBER MAX6403-XXUK MAX6404-XXUK MAX6405-XXUK PACKAGE NAME WL-CSP4 WL-CSP4 WL-CSP4 DESCRIPTION Wafer-level, chip-scale package; 4 bumps; surface mount Wafer-level, chip-scale package; 4 bumps; surface mount Wafer-level, chip-scale package; 4 bumps; surface mount TEMPERATURE RANGE -40 C to +85 C -40 C to +85 C -40 C to +85 C
NOTE: Each device has 2 standard voltage options, indicated by `XX' on the `Type number'. Additional voltage options may be available (see Table 1 for details). XX (type number suffix) 44 46 Reset threshold voltage (V) (Typical) 4.380 4.630
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Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
Table 1. Factory-trimmed reset thresholds (note 1)
Reset Threshold Voltage, Vth (V) Part number Suffix (XX) 22 23 24 (Note 2) 25 (Note 2) MAX6400-XXUK MAX6400 XXUK MAX6401-XXUK MAX6401 XXUK MAX6402-XXUK 26 27 (Note 2) 28 (Note 2) 29 30 (Note 2) 31 33 (Note 2) 34 (Note 2) 35 (Note 2) 36 (Note 2) 37 (Note 2) 38 (Note 2) MAX6403-XXUK MAX6403 XXUK MAX6404-XXUK MAX6404 XXUK MAX6405-XXUK 39 (Note 2) 40 (Note 2) 41 (Note 2) 42 (Note 2) 43 (Note 2) 44 45 (Note 2) 46 Tamb = +25 C Min 2.167 2.285 2.364 2.462 2.591 2.660 2.758 2.886 2.955 3.034 3.250 3.349 3.447 3.546 3.644 3.743 3.841 3.940 4.038 4.137 4.235 4.314 4.432 4.560 Typ 2.200 2.320 2.400 2.500 2.630 2.700 2.800 2.930 3.000 3.080 3.300 3.400 3.500 3.600 3.700 3.800 3.900 4.000 4.100 4.200 4.300 4.380 4.500 4.630 Max 2.233 2.355 2.436 2.537 2.669 2.741 2.842 2.974 3.045 3.126 3.350 3.451 3.552 3.654 3.755 3.857 3.958 4.060 4.161 4.263 4.364 4.446 4.567 4.699 Tamb = -40 C to +85 C Min 2.145 2.262 2.340 2.437 2.564 2.633 2.730 2.857 2.925 3.003 3.217 3.315 3.412 3.510 3.607 3.705 3.802 3.900 3.997 4.095 4.192 4.270 4.387 4.3514 Max 2.250 2.375 2.460 2.562 2.696 2.768 2.870 3.000 3.075 3.150 3.383 3.485 3.587 3.690 3.792 3.895 3.997 4.100 4.202 4.305 4.407 4.489 4.612 4.746
NOTES: 1. Factory-trimmed reset thresholds are available in 100 mV increments with 1.5% tolerance at room temperature. 2. Consult factory for availability.
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Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
PINNING MAX6400/MAX6402/MAX6403/MAX6405
BUMP A1 DESIGNATOR
MAX6401/MAX6404
BUMP A1 DESIGNATOR
GND
A1
A2
VDD
GND
A1
A2
VDD
RESET
B1
B2
MR
RESET
B1
B2
MR
TOP VIEW (SUBSTRATE SIDE)
TOP VIEW (SUBSTRATE SIDE)
SL01891
SL01892
Figure 2. MAX6400/MAX6402/MAX6403/MAX6405 pin configuration.
Figure 3. MAX6401/MAX6404 pin configuration.
MAX6400/MAX6402/MAX6403/MAX6405 Pin description
BUMP A1 A2 B1 SYMBOL GND VDD RESET DESCRIPTION Device ground. Positive supply voltage. Active-LOW Reset output. RESET remains LOW while VDD is below the reset threshold and for a reset delay time of at least 100 ms after VDD rises above the reset threshold. MAX6402/MAX6405 have open-drain output and the MAX6400/MAX6403 are push-pull output. Active-LOW Manual Reset. Internal 50 k pull-up resistor to VDD. Pull LOW to assert a reset condition. As long as MR is LOW, the reset remains asserted. Reset is released in typically 185 ms (reset delay time) after MR goes HIGH. When unused, the MR pin is connected to VDD or left floating.
MAX6401/MAX6404 Pin description
BUMP A1 A2 B1 SYMBOL GND VDD RESET DESCRIPTION Device ground. Positive supply voltage. Active-HIGH Reset Output. RESET remains HIGH while VDD is below the reset threshold and remains HIGH for at least 100 ms after VDD rises above the reset threshold. Active-LOW Manual Reset. Internal 50 k pull-up resistor to VDD. Pull LOW to assert a reset condition. As long as MR is LOW, the reset remains asserted. Reset is released in typically 185 ms (reset delay time) after MR goes HIGH. When unused, the MR pin is connected to VDD or left floating.
B2
MR
B2
MR
MAXIMUM RATINGS
SYMBOL VDD PARAMETER Supply voltage Voltage RESET, RESET (push-pull) Voltage RESET (open drain) Voltage manual reset, MR IIN IOUT Tamb Tstg PD Input current (any pin) Output current (any pin) Ambient temperature range Storage temperature range Power dissipation, 4-bump WL-CSP Derate 3.8 mW/C above Tamb = 70 C CONDITIONS MIN. -0.3 -0.3 -0.3 -0.3 - - -40 -65 - MAX. +6 VDD + 0.3 +6 VCC + 0.3 20 20 +85 +150 303 UNIT V V V V mA mA C C mW
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Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
ELECTRICAL CHARACTERISTICS
VDD = full range (Tamb = -40 C to +85 C) unless otherwise specified. Typical values are at Tamb = +25 C and VDD = 3 V (Note 1). SYMBOL VDD IDD PARAMETER Supply voltage range Supply current CONDITIONS Tamb = 0 C to +70 C Tamb = -40 C to +85 C VDD = 3.0 V for Vth 2.93 V; VDD = 3.2 V for Vth 2.93 V, no load VDD = 5.5 V, no load Vth Vth/C Vhys y tRD tRP VIL VIH tMD tMR VOL(RESET) Reset threshold (see Table 1) Reset threshold temperature coefficient Reset threshold hysteresis VDD to Reset release delay Reset active time-out period LOW-level input voltage on MR pin HIGH-level input voltage on MR pin MR minimum input pulse width MR glitch rejection MR to Reset time delay MR pull-up resistance LOW-level output voltage on RESET pin (MAX6400/MAX6402/ MAX6403/MAX6405) ISINK = 1.6 mA; VDD > 2.1 V; RESET asserted ISINK = 100 A; VDD > 2.1 V; RESET asserted ISOURCE = 500 A; VDD = 3.2 V; MAX6400 only; RESET released ISOURCE = 800 A; VDD = 4.5 V; Vth 4.38 V; RESET released ISOURCE = 800 A; VDD = Vth(max); Vth 4.5 V; RESET released VOH(RESET) HIGH-level output voltage on RESET pin (MAX6401/MAX6404) VOL(RESET) LOW-level output voltage on RESET pin (MAX6401/MAX6404) ISOURCE = 500 A; VDD 2.1 V; RESET asserted ISOURCE = 50 A; VDD 1.2 V; RESET asserted ISINK = 1.2 mA, VDD 3.2 V; RESET released; MAX6401 only ISINK = 3.2 mA, VDD 4.5 V; Vth 4.38 V; RESET released ISINK = 3.2 mA, VDD = Vth(max); Vth 4.5 V; RESET released Open drain RESET output leakage current (Note 2) RESET released Vth > 4.0 V Vth 4.0 V Vth > 4.0 V Vth 4.0 V MAX6400/MAX6401/MAX6402 MAX6403/MAX6404/MAX6405 VDD = (Vth + 100 mV) to (Vth - 100 mV) Tamb = +25 C Tamb = -40 C to +85 C MIN. 1.0 1.2 - - Vth - 1.5% Vth - 2.5% - - - - 100 - - 2.0 0.7 x VDD 1 - - 25 - - 0.8 x VDD 0.8 x VDD 0.8 x VDD 0.8 x VDD 0.8 x VDD - - - - TYP. - - 0.5 1.0 Vth Vth 40 6.3 9.5 20 185 - - - - - 100 200 50 - - - - - - - - - - - MAX. 5.5 5.5 1.0 1.75 Vth + 1.5% Vth + 2.5% - - - - 280 0.8 0.2 x VDD - - - - - 75 0.3 0.4 - - - - - 0.3 0.4 0.4 0.1 UNIT V V A A V V ppm/C mV mV s ms V V V V s ns ns k V V V V V V V V V V A
VOH(RESET) HIGH-level output voltage on RESET pin (MAX6400/MAX6403)
NOTES: 1. Over-temperature limits are guaranteed by design and are not production tested. 2. Guaranteed by design; not production tested.
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Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
TIMING DIAGRAM
The timing diagram in Figure 4 depicts the operation of the device. Letters indicate events on the TIME axis. On power-up, when VDD reaches 1 V, RESET is guaranteed to be a logic LOW. At Event A, VDD rises to reset threshold voltage, Vth. At this time, the internal reset delay timer is initiated. RESET and remains asserted for a reset delay time, tRP of typically 180 ms after the supply voltage rises above the reset threshold, Vth. Event B: At this time, the reset is released. RESET goes HIGH. The reset delay time helps to ensure valid reset signals with erratic changes in supply voltage. Events C-E: At Event C, under brown-out conditions, VDD falls below the reset threshold minus the hysteresis voltage, Vhys, the reset signal is asserted. When power recovers and VDD rises above the reset threshold, it once again initiates the reset delay timer (Event D). At Event E, VDD falls below the reset threshold before the reset delay time is reached, and reset remains asserted. At F, the VDD rises above the reset threshold and remains above the reset threshold for typically 185 ms. At G, the reset is once again released. At H, the MR is externally pulled LOW for greater than 1 s (minimum MR pulse width, tMD for VDD = +5 V). At I, the manual reset is asserted in 200 ns (typical MR to reset out delay time, tMR for VCC = +5 V). At J, the MR pin returns HIGH. At this point, reset delay timer is initiated and in typically 180 ms (at K), the reset condition is released. Event L: On power-down, when VDD falls below Vth - Vhys, RESET is guaranteed to be asserted until VDD falls below 1 V.
VDD
Vth
Vth - Vhys
Vth
Vth - Vhys
tRP
tRP
tRP
RESET
MR
tMR tMD TIME A B C D E F G H IJ K L
SL01893
Figure 4. Timing diagram.
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Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
TECHNICAL DISCUSSION General discussion
MAX6400-MAX6405 microprocessor (P) supervisory ICs provide system protection by monitoring power supply voltage and asserting a reset signal if the supply falls below the specified threshold. The MAX6402/MAX6405 have an active-LOW open drain output. The MAX6400/MAX6403 have an active-LOW, push-pull output; while the MAX6401/MAX6404 have an active-HIGH, push-pull output. The reset state is guaranteed to remain valid as long as VDD is above +1 V.
Manual Reset
The manual reset input, MR is active-LOW logic. It allows the RESET to be asserted by a pushbutton switch. A mechanical pushbutton switch is effectively debounced by the glitch filter. The typical glitch rejection is 100 ns. MR may be driven from an external logic circuit since it is TTL/CMOS compatible. The minimum MR input pulse is 1 s for VDD = +1.2 V to +5.5 V. When not in use, the pin is left floating or tied to VDD.
Threshold levels
The reset threshold voltages are factory trimmable from 2.2 V to 4.63 V in approximately 100 mV increments. Sample stock is available for all standard threshold voltages shown in Table 1, "Factory-trimmed reset thresholds". Guaranteed threshold voltage tolerance is 1.5% at Tamb = 25 C and 2.5% over the operating ambient temperature, Tamb = -40 C to +85 C.
2003 May 27
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Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
APPLICATION INFORMATION Interfacing to Ps with bi-directional reset pins
The MAX6402/MAX6405 RESET outputs are open drain and are easily interfaced with microprocessors which have bi-directional reset pins, such as the Motorola 68HC11. Directly connecting the MAX6402/MAX6405 RESET output to the P's reset input and providing a pull-up resistor to VDD allows either device to independently assert reset (Figure 5).
VDD VDD VDD RESET RPU RESET VDD RESET MOTOROLA 68HCXX VDD RESET MICROPROCESSOR
System configurations with various Ps
The MAX6400-MAX6405 Series resets provide a system solution for various Ps. Figures 7 and 8, respectively, reference the Philips Ps which are compatible with the MAX6400/MAX6403 and MAX6401/MAX6404 system resets.
VDD
MAX6400/ MAX6403
PUSH-BUTTON RESET SWITCH MR GND
MAX6402/ MAX6405
PUSH-BUTTON RESET SWITCH MR GND
GND
GND
SL01896 SL01894
Figure 5. Interfacing to Ps with bi-directional reset pins.
NOTE: 1. Philips microprocessors with active-LOW resets: All 16-bit devices from the XA family (XA-Cxx, XA-Gxx, XA-Sxx, XA-Hxx), all LPC7xx devices (P87LPC760/761/762/767/768/769, P80C591/P87C591 (with on-chip CAN controller). Figure 7. P system diagram using MAX6400/MAX6403 push-pull, active-LOW resets.
Negative-going VDD transients
The MAX6400-MAX6405 Series resets are relatively immune to short duration, negative-going VDD transients or power glitches. This capability greatly reduces false resets with short -duration pulses. Figure 6, "Maximum transient duration versus reset comparator overdrive" shows the maximum transient condition for which reset signals are not generated. The graph shows the maximum pulse width that a negative-going transient may have before it will generate a reset signal. Note: as the amplitude of the transient increases, the maximum allowable transient pulse width decreases.
450 MAXIMUM TRANSIENT DURATION ( s) 400 350 300 250 200 MAX6403/MAX6404/MAX6405 150 100 50 0 1 10 100 1000 MAX6400/MAX6401/MAX6402
VDD
VDD RESET
VDD RESET MICROPROCESSOR
MAX6401/ MAX6404
PUSH-BUTTON RESET SWITCH MR GND
GND
SL01897
NOTE: 1. Philips microprocessors with active-HIGH resets: 8xC5x, 8xC3x, 8xC5xX2, 8xC3xX2, 8xC51Fx, 8xC51Rx+, 89C51Rx2, 89C66x, 8xC554, 8xC552, etc. Figure 8. P system diagram using MAX6401/MAX6404 push-pull, active-HIGH resets.
RESET COMPARATOR OVERDRIVE, Vth - VDD (mV)
SL01895
Figure 6. Maximum transient duration versus reset comparator overdrive.
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Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
PACKING METHOD
The MAX6401-MAX6405 Series are packed in reels, as shown in Figure 9.
GUARD BAND
TAPE REEL ASSEMBLY
TAPE DETAIL
COVER TAPE
CARRIER TAPE
BARCODE LABEL
BOX
SL01305
Figure 9. Tape and reel packing method.
WL-CSP4: wafer level, chip-scale package; 4 bumps
E A2 A D B1 B2 A1
PIN A1 CORNER INDEX
A1
A2
SIDE VIEW
TOP VIEW
e
B1
B2
b
A1 PIN A1 INDICATOR
A2 h
BOTTOM VIEW
DIMENSIONS UNIT inch A 0.024 0.020 A1 0.009 0.0015 A2 0.013 reference b 0.0120 BASIC D 0.042 0.038 E 0.042 0.038 e 0.0197 BASIC h 0.010 reference
Meets JEDEC MO195.
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Philips Semiconductors
Product data
Ultra-low-power microprocessor reset circuit in 4-bump Chip-Scale package
MAX6400/MAX6401/MAX6402/ MAX6403/MAX6404/MAX6405
REVISION HISTORY
Rev _1 Date 20030527 Description Product data (9397 750 10644); ECN 853-2428 29962 of 27 May 2003
Data sheet status
Level
I
Data sheet status [1]
Objective data
Product status [2] [3]
Development
Definitions
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. 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. 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).
II
Preliminary data
Qualification
III
Product data
Production
[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. Limiting values definition -- 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 via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
Contact information
For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825
(c) Koninklijke Philips Electronics N.V. 2003 All rights reserved. Printed in U.S.A. Date of release: 05-03
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Document order number:
9397 750 10644
Philips Semiconductors
2003 May 27 11

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