IDT70P35L25BFI datasheet, PDF - EEWORLD Datasheet

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IDT70P35L25BFI: DescriptionHIGH-SPEED 1.8V 8/4K x 18 DUAL-PORT, 8/4K x 16 DUAL-PORT STATIC RAM; File Size294KB，22 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/

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IDT70P35L25BFI Overview

HIGH-SPEED 1.8V 8/4K x 18 DUAL-PORT, 8/4K x 16 DUAL-PORT STATIC RAM

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HIGH-SPEED 1.8V

8/4K x 18 DUAL-PORT

8/4K x 16 DUAL-PORT

STATIC RAM

Features

◆

ADVANCED

IDT70P35/34L

IDT70P25/24L

◆

True Dual-Ported memory cells which allow simultaneous

reads of the same memory location

High-speed access

IDT70P35/34L (IDT70P25/24L)

– Commercial: 20/25ns (max.)

– Industrial: 25ns (max.)

Low-power operation

IDT70P35/34L (IDT70P25/24L)

Active: 30.6mW (typ.)

Standby: 5.4mW (typ.)

Separate upper-byte and lower-byte control for multiplexed

bus compatibility

IDT70P35/34L (IDT70P25/24L) 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 = V

for

BUSY

output flag on Master

M/S = V

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 1.8V (±100mV) power supply

Available in a 100-pin Thin Quad Flatpack (TQFP) package,

100-pin 0.8mm pitch Ball Grid Array (fpBGA), and 100-pin

0.5mm pitch BGA (fpBGA)

Industrial temperature range (-40°C to +85°C) is available

for selected speeds

Functional Block Diagram

R/W

I/O

-I/O

17L

(5)

I/O

-I/O

(4)

BUSY

12L

(1)

(2,3)

I/O

-I/O

17R

(5)

I/O

Control

I/O

Control

I/O

-I/O

(4)

BUSY

(2,3)

Address

Decoder

MEMORY

ARRAY

Address

Decoder

12R

(1)

R/W

SEM

(3)

INT

NOTES:

1. A

is a NC for IDT70P34 and IDT70P24.

2. (MASTER):

BUSY

is output; (SLAVE):

BUSY

is input.

BUSY

outputs and

INT

outputs are non-tri-stated push-pull.

4. I/O

x - I/O

x for IDT70P25/24.

5. I/O

x - I/O

x for IDT70P25/24.

ARBITRATION

INTERRUPT

SEMAPHORE

LOGIC

R/W

SEM

INT

(3)

5683 drw 01

M/S

FEBRUARY 2004

DSC-5683/2

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