70V27

HIGH-SPEED 3.3V 32K x 16 DUAL-PORT STATIC RAM IDT70V27S/L LEAD FINISH (SnPb) ARE IN EOL PROCESS - LAST TIME BUY EXPIRES JUNE 15, 2018 Features: ◆ True Dual-Ported memory cells which allow simultaneous access of the same memory location ◆ High-speed access – Commercial: 15/20/25/35/55ns (max.) – Industrial: 15/20/35ns (max.) ◆ Low-power operation – IDT70V27S Active: 500mW (typ.) Standby: 3.3mW (typ.) – IDT70V27L Active: 500mW (typ.) Standby: 660μW (typ.) ◆ Separate upper-byte and lower-byte control for bus matching capability ◆ On-chip port arbitration logic ◆ Dual chip enables allow for depth expansion without external logic ◆ IDT70V27 easily expands data bus width to 32 bits or more using the Master/Slave select when cascading more than one device ◆ M/S = VIH for BUSY output flag on Master, M/S = VIL for BUSY input on Slave ◆ Busy and Interrupt Flags ◆ Full on-chip hardware support of semaphore signaling between ports ◆ Fully asynchronous operation from either port ◆ LVTTL-compatible, single 3.3V (±0.3V) power supply ◆ Available in 100-pin Thin Quad Flatpack (TQFP) ◆ Industrial temperature range (-40°C to +85°C) is available for selected speeds ◆ Green parts available, see ordering information Functional Block Diagram R/WL UBL CE0L CE1L OEL LBL R/WR UBR CE0R CE1R OER LBR I/O8-15L I/O0-7L BUSYL (1,2) I/O Control I/O Control A14L A0L Address Decoder A14L A0L CE0L CE1L OEL R/WL 32Kx16 MEMORY ARRAY 70V27 ARBITRATION INTERRUPT SEMAPHORE LOGIC SEM L NOTES: INT (2) ...