HIGH-SPEED 3.3V STATIC RAM
HIGH-SPEED 3.3V 8/4K x 18 DUAL-PORT 8/4K x 16 DUAL-PORT STATIC RAM
70V35/34S/L 70V25/24S/L
Features
◆ True Dual-Ported...
Description
HIGH-SPEED 3.3V 8/4K x 18 DUAL-PORT 8/4K x 16 DUAL-PORT STATIC RAM
70V35/34S/L 70V25/24S/L
Features
◆ True Dual-Ported memory cells which allow simultaneous reads of the same memory location
◆ High-speed access IDT70V35 – Commercial: 15ns (max.) – Industrial: 20ns IDT70V34 – Commercial: 15ns (max.) IDT70V25 – Commercial: 15/35ns (max.) – Industrial: 20/25ns IDT70V24 – Commercial: 15//35/55ns (max.) – Industrial: 15/20ns
◆ Low-power operation – IDT70V35/34L Active: 415mW (typ.) Standby: 660μW (typ.)
Functional Block Diagram
R/WL UBL
– IDT70V25/24S
– IDT70V25/24L
Active: 400mW (typ.)
Active: 380mW (typ.)
Standby: 3.3mW (typ.)
Standby: 660μW (typ.)
◆ Separate upper-byte and lower-byte control for multiplexed
bus compatibility
◆ IDT70V35/34 (IDT70V25/24) easily expands data bus width
to 36 bits (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 Flag
◆ On-chip port arbitration logic
◆ 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 a 100-pin TQFP (IDT70V35/34) & (IDT70V25/24),
and 84-pin PLCC (IDT70V24)
◆ Industrial temperature range (-40°C to +85°C) is available
for selected speeds
◆ Green parts available, see ordering information
R/WR UBR
LBL CEL OEL
I/O9L-I/O17L(5)
I/O0L-I/O8L(4) BUSYL(2,...
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