70V28L20PFI8 datasheet, PDF - EEWORLD Datasheet

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70V28L20PFI8: DescriptionSram 32kx16 3.3V dual- port ram; Categorysemiconductor Other integrated circuit (IC); File Size142KB，17 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/

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70V28L20PFI8 Overview

Sram 32kx16 3.3V dual- port ram

70V28L20PFI8 Parametric

Parameter Name	Attribute value
Manufacture	IDT (Integrated Device Technology)
Product Category	SRAM
RoHS	N
Package / Case	TQFP-100
Packaging	Reel
Factory Pack Quantity	750

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HIGH-SPEED 3.3V

64K x 16 DUAL-PORT

STATIC RAM

Features

◆

IDT70V28L

◆

True Dual-Ported memory cells which allow simultaneous

access of the same memory location

High-speed access

– Commercial: 15/20ns (max.)

– Industrial: 20ns (max.)

Low-power operation

– IDT70V28L

Active: 440mW (typ.)

Standby: 660µW (typ.)

Dual chip enables allow for depth expansion without

external logic

IDT70V28 easily expands data bus width to 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 Flags

On-chip port arbitration logic

Full on-chip hardware support of semaphore signaling

between ports

Fully asynchronous operation from either port

Separate upper-byte and lower-byte controls for multi-

plexed bus and bus matching compatibility

LVTTL-compatible, single 3.3V (±0.3V) power supply

Available in a 100-pin TQFP

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

for selected speeds

Green parts available, see ordering information

Functional Block Diagram

I/O

8-15L

I/O

0-7L

BUSY

15L

(1,2)

I/O

8-15R

I/O

Control

I/O

Control

I/O

0-7R

BUSY

64Kx16

MEMORY

ARRAY

70V28

(1,2)

Address

Decoder

Address

Decoder

15R

R/W

SEM

ARBITRATION

INTERRUPT

SEMAPHORE

LOGIC

R/W

SEM

(2)

INT

4849 drw 01

M/S

NOTES:

BUSY

is an input as a Slave (M/S=V

) and an output when it is a Master (M/S=V

BUSY

and

INT

are non-tri-state totem-pole outputs (push-pull).

INT

(2)

(1)

OCTOBER 2008

DSC-4849/5

70V28L20PFI8 Related Products

	70V28L20PFI8	70V28L20PFG	70V28L15PF
Description	Sram 32kx16 3.3V dual- port ram	Sram 32kx16 3.3V dual- port ram	Sram 32kx16 3.3V dual- port ram
Manufacture	IDT (Integrated Device Technology)	IDT (Integrated Device Technology)	IDT (Integrated Device Technology)
Product Category	SRAM	SRAM	SRAM
RoHS	N	Yes	N
Package / Case	TQFP-100	TQFP-100	TQFP-100
Packaging	Reel	Bulk	Bulk
Factory Pack Quantity	750	6	6

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