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1Characteristics subject to change without notice 2079 1.2 05/24/04 SMS45SUMMIT MICROELECTRONICS, Inc. ©SUMMIT MICROELECTRONICS, Inc., 2004 • 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 Programmable Power-up Cascade Sequencing 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 Programmable Nonvolatile Combinatorial Logic for generation of Reset zzzzz Fault Status Register zzzzz 4k-Bit Nonvolatile General Purpose Memory
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 Cascade Sequencer and Supervisory Controller with 4k-Bit Nonvolatile Memory FEATURES INTRODUCTION The SMS45 is a nonvolatile user-programmable voltage supply cascade sequencer and supervisory circuit de- signed specifically for advanced systems that need to monitor multiple voltages. The SMS45 can monitor four separate voltages without the need of any external voltage divider circuitry unlike other devices that need factory- trimmed threshold voltages and external components to accommodate different supply voltages and tolerances. The SMS45 can also be used to enable DC/DC converters or LDOs to provide a closed loop cascading of the supplies during power -up. The SMS45 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 2-wire serial interface. Programming of configuration, control and calibration values by the user is simplified with the SMX3200 interface adapter and Windows GUI software obtainable from Sum- mit Microelectronics. SIMPLIFIED APPLICATION DRAWING ing and supervisory functions. NOTE: THIS IS AN APPLICATIONS EXAMPLE ONLY. SOME PINS, COMPONENTS AND VALUES ARE NOT SHOWN. RESET# PUP#1 VDD_CAP PUP#2 PUP#3 I2C 3.3V 2.5V 1.8V DC-DC DC-DC LDO SMS45 A2 A1 SDA SCL 7 6 9 10 MR# Reset#
15 WLDI
0.1µF
2079 1.2 05/24/04 SUMMIT MICROELECTRONICS, Inc. timer has elapsed. See also Figure 5. Figure 1. Cascading Power Supplies
2047 Fig01
32079 1.2 05/24/04 SMS45 SUMMIT MICROELECTRONICS, Inc. Preliminary Information PIN CONFIGURATION PIN NAMES 2047 Pins Table 2.0 MR# PUP#1 PUP#2 GND V WLDI PUP#3 VDD_CAP RESET# SCL SDA 2047 PCon 2.0 niPe maNn oitcnuF 1# RMt upniteserlaunaM 2V 1 tupnirotinomdnaylppusegatloV 3V 2 tupnirotinomdnaylppusegatloV 41 #PUPt uptuodettimreppurewoP 52 #PUPt uptuodettimreppurewoP
61 At upnisserddA
72 At upnisserddA
11# TESERt uoteseR 21P AC_DDVt uptuoylppusrewoP 313 #PUPd ettimreppurewoP 41V 3 tupnirotinomdnaylppusegatloV 51I DLWt purretniremiTgodhctaW 61V 0 tupnirotinomdnaylppusegatloV
2079 1.2 05/24/04 SUMMIT MICROELECTRONICS, Inc. Preliminary Information *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: DC OPERATING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS* RECOMMENDED OPERATING CONDITIONS (Over Recommended Operating Conditions; Voltages are relative to GND) VSUPPLY = Device supply voltage provided by the highest VX input. Package Thermal Resistance (θJA) Moisture Classification Level 1 (MSL 1) per J-STD- 020 lobmySr etemaraPs etoN. niM. pyT. xaMt inU V YLPPUS egatlovylppusgnitarepO -tuoteserdilavaotsrefer.niMV1 detareneggniebtup 0.15 .5V ta:snoitarepoetirw/daeryromeM Vehtfoenotsael X ebtsumstupni Vevobarota YLPPUS .nim 7.25 .5V I CC tnerrucylppuS V;V5.5=PAC_DDV 0 V;V7.4tnioppirt 1 V, 2, V3 V=#RM;DNG= CC stuptuolla; gnitaolf 0020 04A µ yromemroretsigernoitarugifnoC ssecca 3A m V HTP egnaR dlohserhtelbammargorP )egnarwol(egnar VegnaregatlovdlohserhtteseR 0 Vot 3 )stnemercniVm5( 6.05 78.1V V HTP egnaR dlohserhtelbammargorP )egnarhgih(egnar VegnaregatlovdlohserhtteseR 0 Vot 3 )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 oleb1etoNeeS0 3V m 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 CC V RELIABILITY CHARACTERISTICS
52079 1.2 05/24/04 SMS45 SUMMIT MICROELECTRONICS, Inc. Preliminary Information lobmySr etemaraPs etoN. niM. pyT. xaMt inU t OTDWP godhctaWelbammargorP doirepremit 2DW1 DW0 DW
00 X F FO—
t YLDP X morfyaledelbammargorP V HTP tuo#PUPot 1-X#PUP0 -X#PUP 00 s m0— 01 9 15 21 3 sm108 30 53 6 11 5 70 015 21 I RM tnerrucpullup#RM 001A µ T RM htdiwesluptupni#RMm uminiM0 03s n T TSRRMD otwol#RMmorfyaleD wol#TESER 002s n t OTRP eslupteserelbammargorP htdiw 1OTR0 OTR 00 9 15 21 3s m 01 8 30 53 6s m 105 70 015 21s m 110 510 020 52s m t TSRD yaled#TESERotniVe virdrevoVm0010 2s µ AC OPERATING CHARACTERISTICS (Over Recommended Operating Conditions; Voltages are relative to GND, also see configuration registers)
72079 1.2 05/24/04 SMS45 SUMMIT MICROELECTRONICS, Inc. Preliminary Information A1,A2 (6, 7) A1 and A2 are the address inputs. When addressing the SMS45 memory or configuration registers the address inputs distinguish which one of four possible devices sharing the common bus is being addressed. SDA (9) SDA is the serial data input/output pin. It should be tied to VDD_CAP through a pull-up resistor. SCL (10) SCL is the serial clock input. It should be tied to VDD_CAP through a pull-up resistor. PUP#1, PUP#2, PUP#3 (4, 5, 13) These are the power-up permitted (PUP) active low open drain outputs. The PUP pins are used when the SMS45 is programmed to provide the cascade sequencing of LDOs or DC/DC converters (see Figures 1 and 5 for illustra- tions of cascading). Each delay is independently enabled and programmable for its duration (configuration register 7). If all PUP# outputs are enabled the order of events would be as follows: V 0 above threshold then delay to PUP#1 turning on; V1 above threshold then delay to PUP#2 turning on; V2 above threshold then delay to PUP#3 turning on. The delays are programmable. PIN DESCRIPTIONS (CONTINUED)
2079 1.2 05/24/04 SUMMIT MICROELECTRONICS, Inc. Figure 5. VX Input and Resulting PUP# Cascade (RESET# set to trip on V 3 Undervoltage) Figure 6. Timing with Register 7 Contents 22 HEX
2047 Fig05
2047 Fig06
SUMMIT MICROELECTRONICS, Inc. Figure 7. Cascade Flow Chart
2047 Fig07
2079 1.2 05/24/04 SUMMIT MICROELECTRONICS, Inc. Table 2. Configuration Register 4 the four pins is at or above 1V. ply input must be above 2.7V. connect capacitors from each of the Vx inputs to GND. primary supply and is the first to become active. Table 1. Configuration Registers 0, 1, 2, and 3 range = "1") using Bits D3:0. the PUP outputs for use of the timer. MR# input cannot be bypassed or disabled. relationships among the affected signals.
SUMMIT MICROELECTRONICS, Inc. Table 5. Configuration Register 6 (D3 through D7) Table 4. Configuration Register 5 (D4 through D7) Table 3. Configuration Register 5 (D0 through D3) always occur as indicated in the flow chart (Figure 7). Watchdog timer and the WLDI input. When the Watchdog times out RESET# will be generated. out period (tPRTO) and to select the cascade option. 0 is above its programmed threshold. Table 6. Configuration Register 6 (D0, D1, D2)
2079 1.2 05/24/04 SUMMIT MICROELECTRONICS, Inc. ensure proper device operation in the end application. Table 9. PUP Delays, Configuration Register 7 Table 8. Configuration Register 7 (D5 through D0) Table 7. Configuration Register 7 (D7, D6) Note 1 - Setting this bit will cause a permanent Read/Write Lock out. connector. SMX3200 interface cable connector. Figure 8. SMX3200 Programmer I2C serial bus connections to program the SMS45.
SUMMIT MICROELECTRONICS, Inc. Table 10. I2C Operating Characteristics Figure 9. I2C Operating Characteristics Note (1): These values are guaranteed by design. tics: Table 10 and Figure 9. it never initiates any data transfers. will be interpreted as start or stop condition.
2047 Fig09
2079 1.2 05/24/04 SUMMIT MICROELECTRONICS, Inc. Figure 10. START and STOP Conditions Table 11. Slave Addresses while the clock is high, is defined as the Start condition. is high, is defined as the Stop condition. See Figure 10. SDA line high (NACK) when it terminates a read function. 7th) is the MSB of the memory address. when set to 0 a Write operation is selected. 8 bit address of any one of the 512 words in the array. which time the SMS45 begins the internal Write cycle. The SMS45 is capable of a 16-byte page Write operation. respond with an Acknowledge. low order address bits are internally incremented by one.
2047 Fig10
SUMMIT MICROELECTRONICS, Inc. Figure 11. Read and Write Operations The high order bits of the address byte remain constant. address, Acknowledge, and data transfer sequence.
2047 Fig11
2079 1.2 05/24/04 SUMMIT MICROELECTRONICS, Inc. Figure 12. Write Flow Chart issued, indicating that the internal Write cycle is complete. byte Read operation only accesses a single byte of data. Write), followed by the address of the word it is to Read. reverts to its standby power mode. indicating that it requires additional data from the SMS45. and the memory will continue to output data.
2047 Fig12
172079 1.2 05/24/04 SMS45 SUMMIT MICROELECTRONICS, Inc. Preliminary Information Figure 13. Typical applications schematic, the SMX3200 programmer has internal SDA and SCL pullup MR# PUP#1 PUP#2 GND SDA SCL RESET# VDD_CAP PUP#3 WLDI 0.01uF PUP#2 VDD_CAP 10K DIODE 0.1uF PUP#1 VDD_CAP MR# I2C SMX3200 1 2 3 4 5 6 7 8 9 10 Gnd SCL Gnd3 SDA Rsrv5 MR# +10V Rsrv 8 +5V Rsrv 10 WLDI 0.01uF PUP#3 0.01uF 10K 0.01uF RESET# 10K VDD_CAP VDD_CAP 10K
2079 1.2 05/24/04 SUMMIT MICROELECTRONICS, Inc. Preliminary Information DEFAULT CONFIGURATION REGISTER SETTINGS - SMS45GC-230 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 4D Reset timeout set to 100ms, Watchdog Timer set to 1.6s. Bits D4 and D3 indicate revision control. R07 6A EE memory slave address is 1011, configuration registers are unlocked, cascading delays are all 50ms The default device ordering number is SMS45GC-230, is programmed as described above and tested over the commercial temperature range.
192079 1.2 05/24/04 SMS45 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
2079 1.2 05/24/04 SUMMIT MICROELECTRONICS, Inc. Preliminary Information
ORDERING INFORMATION
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 1.2 - This document supersedes all previous versions. Please check the Summit Microelectronics, Inc. web site at www.summitmicro.com for data sheet updates. © Copyright 2004 SUMMIT MICROELECTRONICS, Inc. PROGRAMMABLE ANALOG FOR A DIGITAL WORLD™ I2C is a trademark of Philips Corporation. SMS45 G nnn Package G=16 Lead SSOP Part Number Suffix (see page 18) 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 SMS45G 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