SMS48

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1Characteristics subject to change without notice 2088 1.1 04/10/05 SMS48SUMMIT MICROELECTRONICS, Inc. ©SUMMIT MICROELECTRONICS, Inc., 2005 • 1717 Fox Dr. • San Jose, CA 95131 • Phone 408-436-9890 • FAX 408-436-9897 • www.summitmicro.com PRELIMINARY INFORMATION 1 (SEE LAST PAGE) zzzzz Operational from any of four Voltage Monitoring Inputs zzzzz Four Independent Programmable Reset Outputs zzzzz Programmability allows monitoring any voltage between 0.6V and 5.6V with no external components zzzzz Programmable 5mV steps in the low range zzzzz Programmable Watchdog Timer zzzzz Programmable Reset Pulse Width zzzzz Fault Status Register

APPLICATIONS

zzzzz Desktop/Notebook/Tablet Computers zzzzz Multi-voltage Systems zzzzz Telecom/Network Servers zzzzz Portable Battery-powered Equipment zzzzz Set-top Boxes zzzzz Data-storage Equipment Quad Programmable Precision Supervisory Controller With Independent Resets FEATURES INTRODUCTION The SMS48 is a highly programmable voltage supply controller and supervisory circuit designed specifically for advanced systems that need to monitor multiple voltages. The SMS48 can monitor four separate voltages without the need of any external voltage divider circuitry. This allevi- ates the need for factory-trimmed threshold voltages and the use of external components to accommodate different supply voltages and tolerances. The SMS48 has four programmable independant reset outputs to control different devices for varying reset condi- tions such as UV, OV, watchdog and user pushbutton applications. The SMS48 watchdog timer has a user programmable time-out period and it can be placed in an idle mode for system initialization or system debug. All of the functions are user accessible through an industry standard I 2C serial interface. Programming of configuration, control and calibration val- ues by the user is simplified with the SMX3200 interface adapter and Windows GUI software obtainable from Sum- mit Microelectronics. SIMPLIFIED APPLICATION DRAWING Figure 1 - Precision Quad Power Supply Monitor can monitor any voltage over the range of 0.6V to 5.6V. One of the four supplies must be above 2.7V to power the SMS48. RESET#0 RESET#3 VDD_CAP RESET#1 RESET#2 I2C 3.3V 2.5V 1.8V 1.2V SMS48 A2 A1 SDA SCL 7 6 9 10 MR# Monitored Supplies

15 WLDI

0.1µF Vpullup (0 to +12V) uP/DSP ASIC/FPGA Logic LCD From uP RESET#

2088 1.1 04/10/05 SUMMIT MICROELECTRONICS, Inc. Preliminary Information FUNCTIONAL BLOCK DIAGRAM –REF NV DAC –REF NV DAC –REF NV DAC –REF NV DAC V0 16 V1 2 V2 3 V3 14 MR# 1 PROGRAMMABLE WATCHDOG TIMER SERIAL BUS CONTROL LOGIC RESET#011 SDA VDD_CAP WLDI

10 SCL

VDD_CAP 50kΩ 50kΩ SUPPLY ARBITRATION VDD_CAP RESET#14 RESET#25 RESET#313 PROGRAMMABLE RESET PULSE GENERATOR

32088 1.1 04/11/05 SMS48 SUMMIT MICROELECTRONICS, Inc. Preliminary Information PIN CONFIGURATION PIN NAMES MR# RESET#1 RESET#2 GND V WLDI RESET#3 VDD_CAP RESET#0 SCL SDA niPe maNn oitcnuF 1# RMt upniteserlaunaM 2V 1 rotinomdnaylppusegatloV tupni 3V 2 rotinomdnaylppusegatloV tupni 41 #TESERt uptuo1#teseR 52 #TESERt uptuo2#teseR

61 At upnisserddA

72 At upnisserddA

110 #TESERt uptuo0#teseR 21P AC_DDVt uptuoylppusrewoP 313 #TESERt uptuo3#teseR 41V 3 rotinomdnaylppusegatloV tupni 51I DLWt purretniremitgodhctaW 61V 0 rotinomdnaylppusegatloV tupni

2088 1.1 04/10/05 SUMMIT MICROELECTRONICS, Inc. Preliminary Information DC OPERATING CHARACTERISTICS (Over Recommended Operating Conditions; Voltages are relative to GND) lobmySr etemaraPs etoN. niM. pyT. xaMt inU DDVe gatlovylppusgnitarepO -tuoteserdilavaotsrefer.nimV1 detareneggniebtup 0.15 .5V ta:snoitarepoetirW/daeR taebtsumstupniVehtfoenotsael .nimDDVevobaro 7.25 .5V DDIt nerrucylppuS DDV ≤ V;V5.5 0 V;V7.4tnioppirt 1 V, 2, V3 stuptuolla;DDV=#RM;DNG= gnitaolf 0020 04A µ sseccaretsigernoitarugifnoC3 A m V HTP egnaR dlohserhtelbammargorP )egnarwol( VegnaregatlovdlohserhtteseR 0 ot V3 )stnemercniVm5( 6.05 78.1V V HTP egnaR dlohserhtelbammargorP )egnarhgih( VegnaregatlovdlohserhtteseR 0 ot V3 )stnemercniVm51( 8.15 26.5V V CCAHTP dlohserhtelbammargorP ycaruccA V HTP dlohserhtdemmargorpehtsi Vehtnihtiwtnioptes HTP egnaR 0.1–V HTP 0.1% V TSYH V TSR siseretsyhw oleb1etoNeeSD BTV m R UP ecnatsiserpu-lluPs nipIDLWdna#RM0 5k Ω V LO tuptuoegatlovwoL I KNIS V,Am1= PAC_DDV ≥ V7.23 .0V I KNIS V,Aµ002= PAC_DDV V0.1=3 .0V V LI dlohserhttupnI 6.0V V HI 7.0 × V DD V *Note - Stresses beyond the listed Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. Terminal Voltage with Respect to GND: ABSOLUTE MAXIMUM RATINGS* RECOMMENDED OPERATING CONDITIONS VSUPPLY = Device supply voltage provided by the highest VX input. Package Thermal Resistance (θJA) Moisture Classification Level 1 (MSL 1) per J-STD- 020 RELIABILITY CHARACTERISTICS

52088 1.1 04/11/05 SMS48 SUMMIT MICROELECTRONICS, Inc. Preliminary Information AC OPERATING CHARACTERISTICS (Over Recommended Operating Conditions; Voltages are relative to GND) lobmySr etemaraPs etoN. niM. pyT. xaMt inU t OTRP eslupteserelbammargorP htdiw 915 21 3s m 830 53 6s m 570 015 21s m 0510 020 52s m t TSRD yaled#TESERotniVe virdrevoVm0010 2s µ t OTDWP godhctaWelbammargorP doirepremit FFO— 0030 040 05s m 0060 080 001s m 00210 0610 002s m 00420 0230 004 00840 0460 008s m T RM htdiwesluptupni#RM gnirbotderiuqereslupmuminiM evitcateseR 003s n T TSRRMD otwol#RMmorfyaleD wol#TESER 002s n

2088 1.1 04/10/05 SUMMIT MICROELECTRONICS, Inc. Table 2. Configuration Register 4 the four pins is at or above 1V. connect capacitors from each of the Vx inputs to GND. Table 1. Configuration Registers 0, 1, 2, and 3 1.8V (high range = "1") using Bits D3:0. MR# input cannot be bypassed or disabled. relationships among the affected signals. on WLDI and will reset all four RESET#. the Watchdog timer and the WLDI input.

SUMMIT MICROELECTRONICS, Inc. Table 5. Configuration Register 6 (D3 through D7) Table 4. Status Register 5 (D4 through D7) Table 3. Configuration Register 5 (D0 through D3) Table 6. Configuration Register 6 (D0, D1, D2) Table 7. Configuration Register 7 (D7, D6) Bits D5 Note 1 - Setting this bit will cause a permanent Read/Write Lock out.

2088 1.1 04/10/05 SUMMIT MICROELECTRONICS, Inc. Preliminary Information SMX3200 PROGRAMMER The end user can use the summit SMX3200 programming cable and software that have been developed to operate with a standard personal computer. The programming cable interfaces directly between a PC’s parallel port and the target application. The application’s values are entered via an intuitive graphical user interface employing drop- down menus. The latest revisions of all software and an application brief describing the SMX3200 is available from the website (www.summitmicro.com). DEVELOPMENT HARDWARE & SOFTWARE The Windows GUI software will generate the data and send it in I 2C serial bus format so that it can be directly downloaded to the SMS48 via the programming Dongle and cable. An example of the connection interface is shown in Figure 6. When design prototyping is complete, the software can generate a HEX data file that should be transmitted to Summit for approval. Summit will then assign a unique customer ID to the HEX code and program production devices before the final electrical test operations. This will ensure proper device operation in the end application. Figure 6 - SMX3200 Programmer I 2C serial bus connections to program the SMS48. Pin 9, 5V Pin 7, 10V Pin 5, Reserved Pin 3, GND Pin 1, GND Pin 6, MR# Pin 4, SDA Pin 2, SCL Pin 8, Reserved Pin 10, Reserved Top view of straight 0.1" x 0.1 closed-side connector. SMX3200 interface cable connector. SMS48 SDA SCL VDD_CAP GND 0.1µFMR# 1N4148

SUMMIT MICROELECTRONICS, Inc. Table 8. I2C Operating Characteristics Note (1): These values are guaranteed by design. Characteristics: Table 8 and Figure 7. it never initiates any data transfers. will be interpreted as start or stop condition.

2088 1.1 04/10/05 SUMMIT MICROELECTRONICS, Inc. Table 9. Slave Addresses while the clock is high, is defined as the Start condition. is high, is defined as the Stop condition. See Figure 8. SDA line high (NACK) when it terminates a read function. 7th) is the MSB of the configuration address. when set to 0 a Write operation is selected. issued, indicating that the internal Write cycle is complete.

2088 1.1 04/10/05 SUMMIT MICROELECTRONICS, Inc. Preliminary Information Figure 11 - Application Schematic NOTES: 1. C1 is a 0.1µF. 2. Connector J1 is an SMX3200 (see Figure 6). 3. D1 is a 1N4148 SMS48 MR# WLDI RESET#0 RESET#1 RESET#2 SCL SDA A2 GND VDD_CAP12 RESET#3

152088 1.1 04/11/05 SMS48 SUMMIT MICROELECTRONICS, Inc. Preliminary Information PACKAGE

16 PIN SSOP PACKAGE

0.007 - 0.010 (0.18 - 0.25) 0.150 - 0.157 (3.81 - 3.99) 0.025 (0.635) 0.016 - 0.050 (0.20 - 0.31) 0.189 - 0.197 (4.80 - 5.00) 0.228 - 0.244 (5.79 - 6.20) Pin 1 0.004 - 0.010 (0.10 - 0.25) 0.059 (1.50) 0.053 - 0.069 (1.35 - 1.75) MAX

16 Pin SSOP

Ref. JEDEC MO-137 Inches (Millimeters) 0” Min to 8” Max DEFAULT CONFIGURATION REGISTER SETTINGS - SMS48GC-370 The default device ordering number is SMS48GC-370, is programmed as described above and tested over the commercial temperature range. Register Contents Function R00 56 V0 threshold set to 3.090V R01 28 V1 threshold set to 2.400V R02 A0 V2 threshold set to 1.400V R03 14 V3 threshold set to 0.700V R04 F3 Reset Trigger source set for all channels, V0, V1 set to high range and V2, V3 set to low range R05 X0 Upper bits are volatile status indication of input supply condition. V0, V1, V2 and V3 set to monitor UV Under Voltage. R06 C5 Reset timeout set to 100ms, Watchdog Timer set to 1.6s. Bits D4 and D3 indicate revision control. R07 40 Configuration registers are unlocked.

2088 1.1 04/10/05 SUMMIT MICROELECTRONICS, Inc. Preliminary Information NOTICE NOTE 1 - This is a Preliminary Information data sheet that describes a Summit product currently in pre-production with limited characterization. SUMMIT Microelectronics, Inc. reserves the right to make changes to the products contained in this publication in order to impr ove design, performance or reliability. SUMMIT Microelectronics, Inc. assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and sche dules contained herein reflect representative operating parameters, and may vary depending upon a user’s specific application. While the inform ation in this publication has been carefully checked, SUMMIT Microelectronics, Inc. shall not be liable for any damages arising as a result of any error or omission. SUMMIT Microelectronics, Inc. does not recommend the use of any of its products in life support or aviation applications where the failure or malfunction of the product can reasonably be expected to cause any failure of either system or to significantly affect their safety or effectiveness. Products are not authorized for use in such applications unless SUMMIT Microelectronics, Inc. receives written assurances, to i ts satisfaction, that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; and (c) potential liability of SUMMIT Microelectronics, Inc. is adequately protected under the circumstances. Revision 1.1 - This document supersedes all previous versions. Please check the Summit Microelectronics, Inc. web site at www.summitmicro.com for data sheet updates. © Copyright 2005 SUMMIT MICROELECTRONICS, Inc. PROGRAMMABLE ANALOG FOR A DIGITAL WORLD™ I2C is a trademark of Philips Corporation.

ORDERING INFORMATION

G=16 Lead SSOP Part Number Suffix (see page 17) Summi t Pa r t Number Speci fi c requi rem ents are contai ned i n the suffix such as Hex code, Hex code revision, etc. C Temp Range C=Commer ci al Bl ank=Industri al SMS48G AYYWW Pin 1 Identifier Annn Summit Part Number Date Code (YYWW) Part Number suffix (Contains Customer specific ordering requirements) Lot tracking code (Summit use) Drawing not to scale xx Status Tracking Code (Blank, MS, ES, 01, 02,...) (Summit Use) Product Tracking Code (Summit use) SUMMIT PART MARKING