HMS12832M4

HANBit HAN BIT HMS12832M4 SRAM MODULE 512KByte (128K x 32-Bit) Part No. HMS12832M4 GENERAL DESCRIPTION The HMS12832M4 is a high-speed static random access memory (SRAM) module containing 131,072 words organized in a x32-bit configuration. The module consists of four 128K x 8 SRAMs mounted on a 64-pin, singlesided, FR4-printed circuit board. PD0 and PD1 identify the module’s density allowing interchangeable use of alternate density, industry- standard modules. Four chip enable inputs, (/CE1, /CE2, /CE3 and /CE4) are used to enable the module’s 4 bytes independently. Output enable(/OE) and write enable(/WE) can set the memory input and output. Data is written into the SRAM memory when write enable (/WE) and chip enable (/CE) inputs are both LOW. Reading is accomplished when /WE remains HIGH and /CE and output enable (/OE) are LOW. For reliability, this SRAM module is designed as multiple power and ground pin. All module components may be powered from a single +5V DC power supply and all inputs and outputs are fully TTL-compatible. PIN ASSIGNMENT FEATURES Š Access times : 12, 15 and 20ns Š High-density 512KByte design Š High-reliability, high-speed design Š Single + 5V ±0.5V power supply Š Easy memory expansion with /CE and /OE functions Š All inputs and outputs are TTL-compatible www.DataSheet4U.com Š Industry-standard pinout Š FR4-PCB design Vss PD0 PD1 DQ0 DQ8 DQ1 DQ9 DQ2 DQ10 1 2 3 4 5 6 7 8 9 /CE4 33 /CE3 34 NC 35 A16 36 /OE 37 Vss 38 DQ24 39 DQ16 40 DQ25 41 DQ17 42 DQ...