WS256K32-XXX HI-RELIABILITY PRODUCT 256Kx32 SRAM MODULE PRELIMINARY* FEATURES ■ 2V Data Retention devices available (WS256K32L-XXX low power version only) ■ Access Times 20, 25, 35ns ■ MIL-STD-883 Compliant Devices Available ■ Packaging ■ Commercial, Industrial and Military Temperature Range • 66 pin, PGA Type, 1.185 inch square, Hermetic Ceramic HIP (Package 401) ■ 5 Volt Power Supply • 68 lead, 40mm, Hermetic CQFP (Package 501) ■ TTL Compatible Inputs and Outputs ■ Weight WS256K32N-XHX - 13 grams typical WS256K32-XG4X - 20 grams typical ■ Low Power CMOS ■ Organized as 256Kx32, User Configurable as 512Kx16 ■ Upgradable to 512Kx32 for future expansion ■ Data I/O Compatible with 3.3V devices FIG. 1 * This data sheet describes a product under development, not fully characterized, and is subject to change without notice. PIN CONFIGURATION FOR WS256K32N-XHX PIN DESCRIPTION TOP VIEW 1 12 23 NC I/O8 34 I/O15 45 VCC I/O24 56 I/O31 I/O9 NC I/O14 I/O25 NC I/O30 I/O10 GND I/O13 I/O26 NC I/O29 A13 I/O11 I/O12 A6 I/O27 I/O28 A10 A14 OE A3 A7 A0 A15 A11 NC NC A4 A1 A16 A12 WE1 A8 A5 A2 A17 VCC I/O7 A9 WE2 I/O23 I/O0 CS1 I/O6 I/O16 CS2 I/O22 I/O1 NC I/O5 I/O17 GND I/O21 I/O4 I/O18 I/O3 I/O2 11 October 2000 Rev. 2 22 33 WE1 CS 1 55 WE2 CS2 Data Inputs/Outputs A0-17 Address Inputs WE1-2 Write Enables CS1-2 Chip Selects OE Output Enable VCC Power Supply GND Ground NC Not Connected OE A0-17 256K x 16 256K x 16 16 16 I/O20 I/O19 44 BLOCK DIAGRAM I/O0-31 I/O0-15 I/O16-31 66 1 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com WS256K32-XXX FIG. 2 PIN CONFIGURATION FOR WS256K32-XG4X TOP VIEW NC A0 A1 A2 A3 A4 A5 CS1 GND CS2 WE A6 A7 A8 A9 A10 VCC PIN DESCRIPTION 9 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61 I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 GND I/O8 I/O9 I/O10 I/O11 I/O12 I/O13 I/O14 I/O15 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 I/O16 I/O17 I/O18 I/O19 I/O20 I/O21 I/O22 I/O23 GND I/O24 I/O25 I/O26 I/O27 I/O28 I/O29 I/O30 I/O31 BLOCK DIAGRAM WE OE A0-17 256K x 16 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 16 VCC A11 A12 A13 A14 A15 A16 NC OE NC A17 NC NC NC NC NC NC White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com CS 2 CS 1 I/O0-15 2 256K x 16 16 I/O16-31 I/O0-31 Data Inputs/Outputs A0-17 Address Inputs WE Write Enable CS1-2 Chip Selects OE Output Enable VCC Power Supply GND Ground NC Not Connected WS256K32-XXX ABSOLUTE MAXIMUM RATINGS Parameter TRUTH TABLE Symbol Min Max Unit CS OE WE Mode Data I/O Power TA -55 +125 °C °C H L L L X L H X X H H L Standby Read Out Disable Write High Z Data Out High Z Data In Standby Active Active Active Operating Temperature TSTG -65 +150 Signal Voltage Relative to GND VG -0.5 Vcc+0.5 V Junction Temperature TJ 150 °C 7.0 V Storage Temperature Supply Voltage VCC -0.5 CAPACITANCE (T A = +25°C) RECOMMENDED OPERATING CONDITIONS Parameter Symbol Min Max Unit Supply Voltage VCC 4.5 5.5 V OE capacitance COE VIN = 0 V, f = 1.0 MHz Input High Voltage VIH 2.2 V CC + 0.3 V CWE VIN = 0 V, f = 1.0 MHz Input Low Voltage VIL -0.5 +0.8 V Operating Temp (Mil) TA -55 +125 °C WE1-2 capacitance HIP (PGA) CQFP G4 CS1-2 capacitance Parameter Symbol Conditions Max Unit 28 pF pF CCS VIN = 0 V, f = 1.0 MHz 20 28 20 Data I/O capacitance CI/O VI/O = 0 V, f = 1.0 MHz 20 pF Address input capacitance CAD VIN = 0 V, f = 1.0 MHz 28 pF pF This parameter is guaranteed by design but not tested. DC CHARACTERISTICS (VCC = 5.0V, GND = 0V, TA = -55°C to +125°C) Parameter Symbol Conditions Units Min Max 10 µA Input Leakage Current ILI VCC = 5.5, VIN = GND to VCC Output Leakage Current ILO CS = VIH, OE = VIH, VOUT = GND to VCC 10 µA ICC x 32 CS = VIL, OE = VIH, f = 5MHz, Vcc = 5.5 550 mA Standby Current ISB CS = VIH, OE = VIH, f = 5MHz, Vcc = 5.5 34 mA Output Low Voltage VOL IOL = 8mA, Vcc = 4.5 0.4 Output High Voltage VOH IOH = -4.0mA, Vcc = 4.5 Operating Supply Current x 32 Mode 2.4 V V NOTE: DC test conditions: VIH = VCC -0.3V, VIL = 0.3V LOW POWER DATA RETENTION CHARACTERISTICS (WS256K32L-XXX ONLY) (T A = -55°C to +125°C) Parameter Symbol Conditions Units Min Data Retention Supply Voltage Data Retention Current V DR CS ≥ V CC -0.2V I CCDR3 V CC = 3V Typ 2.0 1.0 3 Max 5.5 V 16 mA White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com WS256K32-XXX AC CHARACTERISTICS (VCC = 5.0V, GND = 0V, TA = -55°C to +125°C) Parameter Symbol Read Cycle -20 -25 Min Read Cycle Time t RC Address Access Time t AA Output Hold from Address Change t OH Chip Select Access Time t ACS Max 20 Min -35 Max 25 Units Max 35 20 0 Min ns 25 0 35 ns 35 ns 20 ns 0 20 ns 25 Output Enable to Output Valid t OE Chip Select to Output in Low Z t CLZ 1 5 12 5 15 5 Output Enable to Output in Low Z t OLZ 1 0 0 0 Chip Disable to Output in High Z t CHZ 1 12 15 20 ns Output Disable to Output in High Z t OHZ 1 12 15 20 ns ns ns 1. This parameter is guaranteed by design but not tested. AC CHARACTERISTICS (VCC = 5.0V, GND = 0V, TA = -55°C to +125°C) Parameter Symbol Write Cycle -20 -25 Min Max Min -35 Max Min Units Max Write Cycle Time t WC 20 25 35 ns Chip Select to End of Write t CW 17 20 25 ns Address Valid to End of Write t AW 17 20 25 ns Data Valid to End of Write t DW 12 15 20 ns Write Pulse Width t WP 17 20 25 ns Address Setup Time t AS 0 0 0 ns Address Hold Time t AH 2 2 2 ns Output Active from End of Write t OW 1 0 0 0 Write Enable to Output in High Z t WHZ 1 Data Hold Time t DH 8 0 10 0 ns 15 ns 0 ns 1. This parameter is guaranteed by design but not tested. FIG. 3 AC TEST CONDITIONS AC TEST CIRCUIT I OL Parameter Current Source VZ D.U.T. ≈ 1.5V (Bipolar Supply) C eff = 50 pf I OH Current Source White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com 4 Typ Unit Input Pulse Levels VIL = 0, VIH = 3.0 V Input Rise and Fall 5 ns Input and Output Reference Level 1.5 V Output Timing Reference Level 1.5 V NOTES: V Z is programmable from -2V to +7V. I OL & IOH programmable from 0 to 16mA. Tester Impedance Z 0 = 75 Ω. V Z is typically the midpoint of V OH and V OL. I OL & IOH are adjusted to simulate a typical resistive load circuit. ATE tester includes jig capacitance. WS256K32-XXX FIG. 4 TIMING WAVEFORM - READ CYCLE tRC ADDRESS tAA CS tRC tCHZ tACS ADDRESS tCLZ tAA OE tOE tOLZ tOH DATA I/O PREVIOUS DATA VALID DATA I/O DATA VALID tOHZ DATA VALID HIGH IMPEDANCE READ CYCLE 1 (CS = OE = VIL, WE = VIH) READ CYCLE 2 (WE = VIH) FIG. 5 WRITE CYCLE - WE CONTROLLED tWC ADDRESS tAW tAH tCW CS tAS tWP WE tOW tWHZ tDW DATA I/O tDH DATA VALID WRITE CYCLE 1, WE CONTROLLED FIG. 6 WRITE CYCLE - CS CONTROLLED tWC WS32K32-XHX ADDRESS tAS tAW tAH tCW CS tWP WE tDW DATA I/O tDH DATA VALID WRITE CYCLE 2, CS CONTROLLED 5 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com WS256K32-XXX PACKAGE 401: 66 PIN, PGA TYPE, CERAMIC HEX-IN-LINE PACKAGE, HIP (H) 30.1 (1.185) ± 0.38 (0.015) SQ PIN 1 IDENTIFIER SQUARE PAD ON BOTTOM 25.4 (1.0) TYP 6.22 (0.245) MAX 3.81 (0.150) ± 0.1 (0.005) 1.27 (0.050) ± 0.1 (0.005) 0.76 (0.030) ± 0.1 (0.005) 2.54 (0.100) TYP 1.27 (0.050) TYP DIA 15.24 (0.600) TYP 0.46 (0.018) ± 0.05 (0.002) DIA 25.4 (1.0) TYP ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES PACKAGE 501: 68 LEAD, CERAMIC QUAD FLAT PACK, CQFP (G4) 39.6 (1.56) ± 0.38 (0.015) SQ 5.1 (0.200) MAX 1.27 (0.050) ± 0.1 (0.005) PIN 1 IDENTIFIER Pin 1 12.7 (0.500) ± 0.5 (0.020) 4 PLACES 5.1 (0.200) ± 0.25 (0.010) 4 PLACES 1.27 (0.050) TYP 0.38 (0.015) ± 0.08 (0.003) 68 PLACES 0.25 (0.010) ± 0.05 (0.002) 38 (1.50) TYP 4 PLACES ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com 6 WS256K32-XXX ORDERING INFORMATION W S 256K32 X - XXX X X X LEAD FINISH: Blank = Gold plated leads A = Solder dip leads DEVICE GRADE: M = Military Screened -55°C to +125°C I = Industrial -40°C to +85°C C = Commercial 0°C to +70°C PACKAGE: H = Ceramic Hex-In-Line Package, HIP (Package 401) G4 = 40mm Ceramic Quad Flat Pack, CQFP (Package 501) ACCESS TIME (ns) IMPROVEMENT MARK N = No Connect at pins 21, 28 and 39 in HIP for Upgrades Blank = Standard Power L = Low Power Data Retention ORGANIZATION, 256Kx32 User configurable as 512Kx16 SRAM WHITE ELECTRONIC DESIGNS CORP. 7 White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com