IDT70V25L25PF IDT, Integrated Device Technology Inc, IDT70V25L25PF Datasheet
IDT70V25L25PF
Specifications of IDT70V25L25PF
Available stocks
Related parts for IDT70V25L25PF
IDT70V25L25PF Summary of contents
Page 1
... Features True Dual-Ported memory cells which allow simultaneous reads of the same memory location High-speed access IDT70V35/34 – Commercial: 15/20/25ns (max.) – Industrial: 20ns IDT70V25/24 – Commercial: 15/20/25/35/55ns (max.) – Industrial: 20/25ns Low-power operation – IDT70V35/34S – IDT70V35/34L Active: 430mW (typ.) Active: 415mW (typ.) Standby: 660 µ ...
Page 2
... This device provides two independent ports with separate control, address, and I/O pins that permit independent, asynchronous access for reads or writes to any location in memory. An automatic power down Pin Configurations (1,2,3,4) 06/24/04 ...
Page 3
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Pin Configurations (1,2,3,4) 06/24/04 Index 100 ...
Page 4
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Pin Configurations (1,2,3,4) 06/11/ I/O I/O I I/O I/O I/O 10L I/O I/O ...
Page 5
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Pin Configurations (1,2,3,4) 06/08/04 INDEX I I I/O 10L 14 ...
Page 6
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Pin Names Left Port Right Port CE CE Chip Enable L R R/W R/W Read/Write Enable Output Enable L R (1) (1) A ...
Page 7
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Absolute Maximum Ratings Symbol Rating (2) V Terminal Voltage TERM with Respect to GND T Temperature BIAS Under Bias T Storage STG Temperature T Junction Temperature JN ...
Page 8
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM DC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range for 70V35/34 Symbol Parameter Dynamic Operating , Outputs Disabled DD IL SEM ...
Page 9
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM DC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range for 70V25/24 Symbol Parameter Dynamic Operating , Outputs Open DD IL SEM ...
Page 10
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range for 70V35/34 Symbol Parameter READ CYCLE t Read Cycle Time RC t Address Access Time AA ...
Page 11
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range for 70V25/24 Symbol Parameter READ CYCLE t Read Cycle Time RC t Address Access Time AA ...
Page 12
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM AC Electrical Characteristics Over the Operating Temperature and Supply Voltage for 70V35/34 Symbol WRITE CYCLE t Write Cycle Time WC (3) t Chip Enable to End-of-Write EW ...
Page 13
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM AC Electrical Characteristics Over the Operating Temperature and Supply Voltage for 70V25/24 Symbol WRITE CYCLE t Write Cycle Time WC (3) t Chip Enable to End-of-Write EW ...
Page 14
... DW the specified access SRAM and SEM = ( ( ( LOW and a LOW CE and a LOW R/W for memory array writing cycle. To access Semaphore and 6.42 14 Industrial and Commercial Temperature Ranges (1,5, allow the I/O drivers to turn off and data and SEM = must be met for either condition ...
Page 15
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Timing Waveform of Semaphore Read after Write Timing, Either Side A -A VALID ADDRESS 0 2 SEM I R/W OE NOTES ...
Page 16
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range for 70V35/34 Symbol BUSY TIMING (M BUSY Access Time from Address Match ...
Page 17
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range for 70V25/24 Symbol Parameter BUSY TIMING (M BUSY Access Time from Address ...
Page 18
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Timing Waveform of Write with BUSY R/W "A" BUSY "B" R/W "B" NOTES: must be met for both master BUSY input (slave) and output (master ...
Page 19
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range for 70V35/34 Symbol Parameter INTERRUPT TIMING t Address Set-up Time AS t Write Recovery Time WR ...
Page 20
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Waveform of Interrupt Timing ADDR "A" ( "A" R/W "A" INT "B" ADDR "B" "B" OE "B" INT "B" NOTES: 1. ...
Page 21
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Truth Table III — Interrupt Flag Left Port 12L 1FFF ...
Page 22
... HIGH). When a port is enabled, access to the entire memory array is permitted. Interrupts If the user chooses the interrupt function, a memory location (mail box or message center) is assigned to each port. The left port interrupt flag (INT ) is asserted when the right port writes to memory location 1FFE ...
Page 23
... The eight semaphore flags reside within the IDT70V35/34 (IDT70V25/ 24 separate memory space from the Dual-Port SRAM. This address space is accessed by placing a LOW input on the SEM pin (which acts as Industrial and Commercial Temperature Ranges ...
Page 24
... Semaphores are a useful form of arbitration in systems like disk interfaces where the CPU must be locked out of a section of memory during a transfer and the I/O device cannot tolerate any wait states. With the use of semaphores, once the two devices has determined which memory area was “ ...
Page 25
IDT70V35/34S/L (IDT70V25/24S/L) High-Speed 3.3V 8/ (8/4K x 16) Dual-Port Static RAM Ordering Information A XXXXX A 999 A Device Power Speed Package Step Type NOTES: 1. Contact your local sales office for Industrial temp range for other speeds, ...