Military & Space Products 32K x 8 ROM—SOI HX6656 FEATURES RADIATION OTHER • Fabricated with RICMOS™ IV Silicon on Insulator (SOI) 0.75 µm Process (Leff = 0.6 µm) • Read Cycle Times < 17 ns (Typical) ≤ 25 ns (-55 to 125°C) • Total Dose Hardness through 1x106 rad(SiO2) • Typical Operating Power <15 mW/MHz • Dynamic and Static Transient Upset Hardness through 1x109 rad(Si)/s • Asynchronous Operation • Dose Rate Survivability through 1x1011 rad(Si)/s • CMOS or TTL Compatible I/O • Neutron Hardness through 1x1014 cm-2 • Single 5 V ± 10% Power Supply • SEU Immune • Packaging Options - 28-Lead Flat Pack (0.500 in. x 0.720 in.) - 28-Lead DIP, MIL-STD-1835, CDIP2-T28 - 36-Lead Flat Pack (0.630 in. x 0.650 in.) • Latchup Free GENERAL DESCRIPTION The 32K x 8 Radiation Hardened ROM is a high performance 32,768 word x 8-bit read only memory with industrystandard functionality. It is fabricated with Honeywell’s radiation hardened technology, and is designed for use in systems operating in radiation environments. The ROM operates over the full military temperature range and requires only a single 5 V ± 10% power supply. The ROM is available with either TTL or CMOS compatible I/O. Power consumption is typically less than 15 mW/MHz in operation, and less than 5 mW when de-selected. The ROM operation is fully asynchronous, with an associated typical access time of 14 ns. Honeywell’s enhanced SOI RICMOS™ IV (Radiation Insensitive CMOS) technology is radiation hardened through the use of advanced and proprietary design, layout, and process hardening techniques. The RICMOS™ IV process is a 5-volt, SIMOX CMOS technology with a 150 Å gate oxide and a minimum drawn feature size of 0.75 µm (0.6 µm effective gate length—Leff). Additional features include tungsten via plugs, Honeywell’s proprietary SHARP planarization process, and a lightly doped drain (LDD) structure for improved short channel reliability. HX6656 FUNCTIONAL DIAGRAM A:0-8,12-13 11 Row Decoder • • • 32,768 x 8 Memory Array CE • • • Q :0-7 Column Decoder Data O utp ut NCS CS • CE • OE NO E (0 = high Z) A:9-11,14 8 Signal 1 = enab led # Signal All controls must b e enab led for a signal to p ass. (#: numb er of b uffers, default = 1) 4 SIGNAL DEFINITIONS A: 0-14 Address input pins which select a particular eight-bit word within the memory array. Q: 0-7 Data Output Pins. NCS Negative chip select, when at a low level allows normal read operation. When at a high level NCS forces the ROM to a precharge condition, holds the data output drivers in a high impedance state and disables all input buffers except CE. If this signal is not used it must be connected to VSS. NOE Negative output enable, when at a high level holds the data output drivers in a high impedance state. When at a low level, the data output driver state is defined by NCS and CE. If this signal is not used it must be connected to VSS. CE* Chip enable, when at a high level allows normal operation. When at a low level CE forces the ROM to a precharge condition, holds the data output drivers in a high impedance state and disables all the input buffers except the NCS input buffer. If this signal is not used it must be connected to VDD. TRUTH TABLE NCS CE* NOE MODE Q L H L Read Data Out H X XX Deselected High Z X L XX Disabled High Z Notes: X: VI=VIH or VIL XX: VSS≤VI≤VDD NOE=H: High Z output state maintained for NCS=X, CE=X *Not Available in 28-lead DIP or 28-Lead Flat Pack 2 HX6656 RADIATION CHARACTERISTICS Total Ionizing Radiation Dose The ROM will meet any functional or electrical specification after exposure to a radiation pulse of ≤50 ns duration up to 1x1011 rad(Si)/s, when applied under recommended operating conditions. The ROM will meet all stated functional and electrical specifications over the entire operating temperature range after the specified total ionizing radiation dose. All electrical and timing performance parameters will remain within specifications after rebound at VDD = 5.5 V and T =125°C extrapolated to ten years of operation. Total dose hardness is assured by wafer level testing of process monitor transistors and ROM product using 10 keV X-ray and Co60 radiation sources. Transistor gate threshold shift correlations have been made between 10 keV X-rays applied at a dose rate of 1x105 rad(SiO2)/min at T = 25°C and gamma rays (Cobalt 60 source) to ensure that wafer level X-ray testing is consistent with standard military radiation test environments. Neutron Radiation The ROM will meet any functional or timing specification after a total neutron fluence of up to 1x1014 cm-2 applied under recommended operating or storage conditions. This assumes an equivalent neutron energy of 1 MeV. Single Event Phenomena All storage elements within the ROM are immune to single event upsets. No access time or other performance degradation will occur for LET 190 MeV/cm/mg2. Transient Pulse Ionizing Radiation The ROM is capable of reading and retaining stored data during and after exposure to a transient ionizing radiation pulse of ≤1 µs duration up to 1x109 rad(Si)/s, when applied under recommended operating conditions. To ensure validity of all specified performance parameters before, during, and after radiation (timing degradation during transient pulse radiation (timing degradation during transient pulse radiation is ≤10%), it is suggested that stiffening capacitance be placed on or near the package VDD and VSS, with a maximum inductance between the package (chip) and stiffening capacitance of 0.7 nH per part. If there are no operate-through requirements, typical circuit board mounted de-coupling capacitors are recommended. Latchup The ROM will not latch up due to any of the above radiation exposure conditions when applied under recommended operating conditions. Fabrication with the SIMOX substrate material provides oxide isolation between adjacent PMOS and NMOS transistors and eliminates any potential SCR latchup structures. Sufficient transistor body tie connections to the p- and n-channel substrates are made to ensure no source/drain snapback occurs. RADIATION HARDNESS RATINGS (1) Parameter Units Limits (2) Test Conditions Total Dose ≥1x106 rad(SiO2) TA=25°C Transient Dose Rate Upset (3) ≥1x109 rad(Si)/s Pulse width ≤1 µs Transient Dose Rate Survivability (3) ≥1x1011 rad(Si)/s Neutron Fluence ≥1x1014 N/cm2 (1) Device will not latch up due to any of the specified radiation exposure conditions. (2) Operating conditions (unless otherwise specified): VDD=4.5 V to 5.5 V, TA=-55°C to 125°C. (3) Not guaranteed with 28–Lead DIP. 3 Pulse width ≤50 ns, X-ray, VDD=6.0 V, TA=25°C 1 MeV equivalent energy, Unbiased, TA=25°C HX6656 ABSOLUTE MAXIMUM RATINGS (1) Rating Symbol Parameter Min Units Max VDD Positive Supply Voltage (2) -0.5 7.0 V VPIN Voltage on Any Pin (2) -0.5 VDD+0.5 V TSTORE Storage Temperature (Zero Bias) -65 150 °C TSOLDER Soldering Temperature • Time 270•5 °C•s PD Total Package Power Dissipation (3) 2.5 W IOUT DC or Average Output Current 25 mA VPROT ESD Input Protection Voltage (4) ΘJC Thermal Resistance (Jct-to-Case) TJ Junction Temperature 2000 V 28 FP/36 FP 2 28 DIP 10 °C/W °C 175 (1) Stresses in excess of those listed above may result in permanent damage. These are stress ratings only, and operation at these levels is not implied. Frequent or extended exposure to absolute maximum conditions may affect device reliability. (2) Voltage referenced to VSS. (3) ROM power dissipation (IDDSB + IDDOP) plus ROM output driver power dissipation due to external loading must not exceed this specification. (4) Class 2 electrostatic discharge (ESD) input protection. Tested per MIL-STD-883, Method 3015 by DESC certified lab. RECOMMENDED OPERATING CONDITIONS Description Parameter Symbol Min Typ Max Units VDD Supply Voltage (referenced to VSS) 4.5 5.0 5.5 V TA Ambient Temperature -55 25 125 °C VPIN Voltage on Any Pin (referenced to VSS) -0.3 VDD+0.3 V CAPACITANCE (1) Symbol Parameter Typical (1) Worst Case Min Max Units Test Conditions CI Input Capacitance 7 pF VI=VDD or VSS, f=1 MHz CO Output Capacitance 9 pF VIO=VDD or VSS, f=1 MHz (1) This parameter is tested during initial design characterization only. 4 HX6656 DC ELECTRICAL CHARACTERISTICS Symbol Typical Worst Case (2) Units (1) Min Max Parameter Test Conditions 1.5 mA IDDSBMF Standby Supply Current - Deselected 1.5 mA IDDOPR Dynamic Supply Current, Selected 4.0 mA VIH=VDD IO=0 VIL=VSS Inputs Stable NCS=VDD, IO=0, f=40 MHz f=1 MHz, IO=0, CE=VIH=VDD NCS=VIL=VSS II Input Leakage Current -1 +1 µA VSS≤VI≤VDD IOZ Output Leakage Current -1 +1 µA VSS≤VIO≤VDD Output=high Z VIL Low-Level Input Voltage 0.3xVDD V V VDD = 4.5V V V VDD = 5.5V V V VDD = 4.5V, IOL = 10 mA VDD = 4.5V, IOL = 200 µA V V VDD = 4.5V, IOH = -5 mA VDD = 4.5V, IOH = -200 µA IDDSB1 VIH Static Supply Current CMOS TTL 0.8 CMOS TTL High-Level Input Voltage 0.7xVDD 2.2 0.4 0.05 VOL Low-Level Output Voltage VOH High-Level Output Voltage 4.2 VDD-0.05 (1) Typical operating conditions: VDD= 5.0 V,TA=25°C, pre-radiation. (2) Worst case operating conditions: VDD=4.5 V to 5.5 V, -55°C to +125°C, post total dose at 25°C. (3) All inputs switching. DC average current. 2.9 V Vref1 + - Valid high output 249Ω DUT output Vref2 + - Valid low output CL >50 pF* *CL = 5 pF for TWLQZ, TSHQZ, TELQZ, and TGHQZ Tester Equivalent Load Circuit 5 HX6656 READ CYCLE AC TIMING CHARACTERISTICS (1) Worst Case (3) Symbol Parameter Typical (2) -55 to 125°C Min Units Max TAVAVR Address Read Cycle Time 25 ns TAVQV Address Access Time TAXQX Address Change to Output Invalid Time TSLQV Chip Select Access Time TSLQX Chip Select Output Enable Time TSHQZ Chip Select Output Disable Time 10 ns TEHQV Chip Enable Access Time (4) 25 ns TEHQX Chip Enable Output Enable Time (4) TELQZ Chip Enable Output Disable Time (4) TGLQV Output Enable Access Time TGLQX Output Enable Output Enable Time TGHQZ Output Enable Output Disable Time 25 3 ns ns 25 5 ns ns 5 ns 10 ns 9 ns 0 ns 9 ns (1) Test conditions: input switching levels VIL/VIH=0.5V/VDD-0.5V (CMOS), VIL/VIH=0V/3V (TTL), input rise and fall times <1 ns/V, input and output timing reference levels shown in the Tester AC Timing Characteristics table, capacitive output loading CL >50 pF, or equivalent capacitive output loading CL=5 pF for TSHQZ, TELQZ TGHQZ. For CL >50 pF, derate access times by 0.02 ns/pF (typical). (2) Typical operating conditions: VDD=5.0 V, TA=25°C, pre-radiation. (3) Worst case operating conditions: VDD=4.5 V to 5.5 V, -55°C to +125°C, post total dose at 25°C. (4) Chip Enable (CE) pin not available on 28-lead FP or DIP. TAVAVR ADDRESS TAVQV TAXQX TSLQV NCS TSLQX DATA OUT TSHQZ HIGH IMPEDANCE DATA VALID TEHQX TEHQV CE TELQZ TGLQX TGLQV TGHQZ NOE 6 HX6656 DYNAMIC ELECTRICAL CHARACTERISTICS Read Cycle The ROM is asynchronous in operation, allowing the read cycle to be controlled by address, chip select (NCS), or chip enable (CE) (refer to Read Cycle timing diagram). To perform a valid read operation, both chip select and output enable (NOE) must be low and chip enable must be high. The output drivers can be controlled independently by the NOE signal. Consecutive read cycles can be executed with NCS held continuously low, and with CE held continuously high, and toggling the addresses. For an address activated read cycle, NCS and CE must be valid prior to or coincident with the activating address edge transition(s). Any amount of toggling or skew between address edge transitions is permissible; however, data outputs will become valid TAVQV time following the latest occurring address edge transition. The minimum address activated read cycle time is TAVAV. When the ROM is operated at the minimum address activated read cycle time, the data outputs will remain valid on the I/O until TAXQX time following the next sequential address transition. To control a read cycle with NCS, all addresses and CE must be valid prior to or coincident with the enabling NCS edge transition. Address or CE edge transitions can occur later than the specified setup times to NCS, however, the valid data access time will be delayed. Any address edge transition, which occurs during the time when NCS is low, will initiate a new read access, and data outputs will not become valid until TAVQV time following the address edge transition. Data outputs will enter a high impedance state TSHQZ time following a disabling NCS edge transition. To control a read cycle with CE, all addresses and NCS must be valid prior to or coincident with the enabling CE edge transition. Address or NCS edge transitions can occur later than the specified setup times to CE; however, the valid data access time will be delayed. Any address edge transition which occurs during the time when CE is high will initiate a new read access, and data outputs will not become valid until TAVQV time following the address edge transition. Data outputs will enter a high impedance state TELQZ time following a disabling CE edge transition. 7 HX6656 TESTER AC TIMING CHARACTERISTICS TTL I/O Configuration CMOS I/O Configuration 3V Input Levels* 0V VDD-0.4V 0.4 V High Z 3.4 V High Z 2.4 V High Z = 2.9V VDD/2 0.5 V 1.5 V Output Sense Levels VDD-0.5 V 1.5 V VDD/2 VDD-0.4V 0.4 V High Z 3.4 V High Z 2.4 V High Z = 2.9V * Input rise and fall times <1 ns/V QUALITY AND RADIATION HARDNESS ASSURANCE Honeywell maintains a high level of product integrity through process control, utilizing statistical process control, a complete “Total Quality Assurance System,” a computer data base process performance tracking system, and a radiation-hardness assurance strategy. need to create detailed specifications and offer benefits of improved quality and cost savings through standardization. The radiation hardness assurance strategy starts with a technology that is resistant to the effects of radiation. Radiation hardness is assured on every wafer by irradiating test structures as well as product die, and then monitoring key parameters which are sensitive to ionizing radiation. Conventional MIL-STD-883C TM 5005 Group E testing, which includes total dose exposure with Cobalt 60, may also be performed as required. This Total Quality approach ensures our customers of a reliable product by engineering in reliability, starting with process development and continuing through product qualification and screening. Honeywell understands the stringent reliability requirements for space and defense systems and has extensive experience in reliability testing on programs of this nature. This experience is derived from comprehensive testing of VLSI processes. Reliability attributes of the RICMOSTM process were characterized by testing specially designed irradiated and non-irradiated test structures from which specific failure mechanisms were evaluated. These specific mechanisms included, but were not limited to, hot carriers, electromigration and time dependent dielectric breakdown. This data was then used to make changes to the design models and process to ensure more reliable products. SCREENING LEVELS In addition, the reliability of the RICMOSTM process and product in a military environment was monitored by testing irradiated and non-irradiated circuits in accelerated dynamic life test conditions. Packages are qualified for product use after undergoing Groups B & D testing as outlined in MIL-STD-883, TM 5005, Class S. The product is qualified by following a screening and testing flow to meet the customer’s requirements. Quality conformance testing is performed as an option on all production lots to ensure the ongoing reliability of the product. RELIABILITY Honeywell offers several levels of device screening to meet your system needs. “Engineering Devices” are available with limited performance and screening for breadboarding and/or evaluation testing. Hi-Rel Level B and S devices undergo additional screening per the requirements of MILSTD-883. As a QML supplier, Honeywell also offers QML Class Q and V devices per MIL-PRF-38535 and are available per the applicable Standard Military Drawing (SMD). QML devices offer ease of procurement by eliminating the 8 HX6656 PACKAGING The 32K x 8 ROM is offered in a custom 36-lead flat pack (FP), 28-Lead FP, or standard 28-lead DIP. Each package is constructed of multilayer ceramic (Al2O3) and features internal power and ground planes. The 36-lead FP also features a non-conductive ceramic tie bar on the lead frame. The tie bar allows electrical testing of the device, while preserving the lead integrity during shipping and handling, up to the point of lead forming and insertion. Ceramic chip capacitors can be mounted to the package to maximize supply noise decoupling and increase board packing density. These capacitors attach directly to the internal package power and ground planes. This design minimizes resistance and inductance of the bond wire and package. All NC (no connect) pins should be connected to VSS to prevent charge build up in the radiation environment. 28-LEAD FP PINOUT 36-LEAD FP PINOUT A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS 1 28 27 2 3 26 25 4 5 6 7 24 23 Top View 8 9 22 21 20 19 10 11 18 17 12 13 16 15 14 VDD NWE A13 A8 A9 A11 NOE A10 NCS DQ7 DQ6 DQ5 DQ4 DQ3 VSS VDD A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 NC VDD VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 Top View 36-LEAD FLAT PACK E 22018131-001 1 b (width) D G Top View e (pitch) H L L Ceramic Body A J I NonConductive Tie-Bar Kovar Lid [3] 0.004 C N X VDD VSS Optional Capacitors VDD M All dimensions are in inches [1] VSS F S Y 1 1 O V W T P R U 9 A b C D E e F G H I J L 0.095 ± 0.014 0.008 ± 0.002 0.005 to 0.0075 0.650 ± 0.010 0.630 ± 0.007 0.025 ± 0.002 [2] 0.425 ± 0.005 [2] 0.525 ± 0.005 0.135 ± 0.005 0.030 ± 0.005 0.080 typ. 0.285 ± 0.015 M N O P R S T U V W X Y 0.008 ± 0.003 0.050 ± 0.010 0.090 ref 0.015 ref 0.075 ref 0.113 ± 0.010 0.050 ref 0.030 ref 0.080 ref 0.005 ref 0.450 ref 0.400 ref [1] Parts delivered with leads unformed [2] At tie bar [3] Lid tied to VSS VSS VDD NWE CE A13 A8 A9 A11 NOE A10 NCS DQ7 DQ6 DQ5 DQ4 DQ3 VDD VSS HX6656 28-LEAD FLAT PACK (22017842-001) E All dimensions in inches Index 1 1 b (width) e BOTTOM VIEW D F TOP VIEW (pitch) S U L W Capacitor Pads X Y Q G A Kovar Lid [4] E2 Ceramic Body C [1] [2] [3] [4] Lead Alloy 42 [3] A b C D e E E2 E3 F G L Q S U W X Y 0.105 ± 0.015 0.017 ± 0.002 0.003 to 0.006 0.720 ± 0.008 0.050 ± 0.005 [1] 0.500 ± 0.007 0.380 ± 0.008 0.060 ref 0.650 ± 0.005 [2] 0.035 ± 0.004 0.295 min [3] 0.026 to 0.045 0.045 ± 0.010 0.130 ref 0.050 ref 0.075 ref 0.010 ref BSC – Basic lead spacing between centers Where lead is brazed to package Parts delivered with leads unformed Lid connected to VSS E3 28-LEAD DIP (22017785-001) For 28-Lead DIP description, see MIL-STD-1835, Type CDIP2-T28, Config. C, Dimensions D-10 10 HX6656 STATIC BURN-IN DIAGRAM* DYNAMIC BURN-IN DIAGRAM* R R R R R R R R R R R R R 2 3 4 5 6 7 8 9 10 11 12 13 14 VSS A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS VDD NC A13 A8 A9 A11 NOE A10 NCS DQ7 DQ6 DQ5 DQ4 DQ3 27 26 25 24 23 22 21 20 19 18 17 16 15 VDD VDD 28 R R R R R R R R R R R R R R F0 F15 F12 F11 F10 F17 F9 F17 F1 F1 F1 F1 F1 R R R R R R R R R R R R VSS VDD = 6.5V, R ≤ 10 KΩ, VIH = VDD, VIL = VSS Ambient Temperature ≥ 125 °C, F0 ≥ 100 KHz Sq Wave Frequency of F1 = F0/2, F2 = F0/4, F3 = F0/8, etc. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS 32K x 8 ROM F16 F7 F6 F5 F4 F3 F2 F8 F13 F14 F1 F1 F1 32K x 8 ROM VDD 1 VDD NC A13 A8 A9 A11 NOE A10 NCS DQ7 DQ6 DQ5 DQ4 DQ3 28 27 26 25 24 23 22 21 20 19 18 17 16 15 R R R R R R R R R R R R R R VDD = 5.5V, R ≤ 10 KΩ Ambient Temperature ≥ 125 °C *36-lead Flat Pack burn-in diagrams have similar connections and are available on request. ROM CODE The ROM code can be provided to Honeywell via FTP, E-Mail or a variety of magnetic storage media, including 3.5 inch floppy disc, 4m digital tape and others. The ROM Code data file should contain the following format: <address> [/] <data> [;] [Comment] Where items enclosed in ‘[‘and’]’ are optional. The address and data must be hex numbers in the form, MSB...LSB. The “/” and the “;” are optional and any characters after the “#” are comments. For example the following input file, all of the lines are valid: 000 d4 001 / 32 002 1d 003 / 72; 4/5e; # all of these lines are in valid format 11 HX6656 ORDERING INFORMATION (1) H 6656 X N S H C SCREEN LEVEL INPUT V=QML Class V BUFFER TYPE Q=QML Class Q C=CMOS Level S=Level S T=TTL Level TOTAL DOSE PACKAGE DESIGNATION B=Level B HARDNESS N=28-Lead FP E=Engr Device (2) 5 R=1x10 rad(SiO2) R=28-Lead DIP 5 F=3x10 rad(SiO ) X=36-Lead FP 2 6 H=1x10 rad(SiO ) K=Known Good Die 2 N=No Level Guaranteed - = Bare die (No Package) PART NUMBER PROCESS X=SOI SOURCE H=HONEYWELL (1) Orders may be faxed to 612-954-2051. Please contact our Customer Logistics Department at 612-954-2888 for further information. (2) Engineering Device description: Parameters are tested from -55 to 125°C, 24 hr burn-in, no radiation guaranteed. Contact Factory with other needs. To learn more about Honeywell Solid State Electronics Center, visit our web site at http://www.ssec.honeywell.com Honeywell reserves the right to make changes to any products or technology herein to improve reliability, function or design. Honeywell does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Helping You Control Your World 900154 2/96