HIGH-SPEED 3.3V STATIC RAM
HIGH-SPEED 3.3V 32K x 16 DUAL-PORT STATIC RAM
IDT70V27S/L
LEAD FINISH (SnPb) ARE IN EOL PROCESS - LAST TIME BUY EXPIRE...
Description
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) ...
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