WS256K32-XXX Datasheet | White Electronic Designs

FEATURES s Access Times 20, 25, 35ns s MIL-STD-883 pliant Devices Available s Packaging PRELIMINARY- s 2V Data Retention devices available (WS256K32L-XXX low power version only) s mercial, Industrial and Military Temperature Range s 5 Volt Power Supply s Low Power CMOS s TTL patible Inputs and Outputs s Weight WS256K32N-XHX - 13 grams typical WS256K32-XG4X - 20 grams typical - This data sheet describes a product under development, not fully characterized, and is subject to change without notice. - 66 pin, PGA Type, 1.185 inch square, Hermetic Ceramic HIP (Package 401) - 68 lead, 40mm, Hermetic CQFP (Package 501) s Organized as 256Kx32, User Configurable as 512Kx16 s Upgradable to 512Kx32 for future expansion s Data I/O patible with 3.3V devices FIG. 1 1 I/O8 I/O9 PIN CONFIGURATION FOR WS256K32N-XHX TOP VIEW 12 NC NC GND I/O11 A10 A11 A12 VCC CS1 NC I/O3 22 33 23 I/O15 I/O14 I/O13 I/O12 OE NC WE1 I/O7 I/O6 I/O5 I/O4 I/O24 I/O25 I/O26 A6 A7 NC A8 A9 I/O16 I/O17 I/O18 44 34 VCC NC NC I/O27 A3 A4 A5 WE2 CS2 GND I/O19 55 45 I/O31 I/O30 I/O29 I/O28 A0 A1 A2 I/O23 I/O22 I/O21 I/O20 66 16 16 PIN DESCRIPTION I/O0-31 A0-17 WE1-2 CS1-2 Data Inputs/Outputs Address Inputs Write Enables Chip Selects Output Enable Power Supply Ground Not Connected I/O10 A13 A14 A15 A16 A17 I/O0 I/O1 I/O2 11 BLOCK DIAGRAM WE1 CS 1 OE A0-17 WE2 CS2 VCC GND NC 256K x 16 256K x 16 I/O0-15 I/O16-31 October 2000 Rev. 2 White Electronic Designs Corporation - (602) 437-1520 - .whiteedc. .. 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 I/O0-31 A0-17 Data Inputs/Outputs Address Inputs Write Enable Chip Selects Output Enable Power Supply Ground Not Connected 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 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42...