EMC646SP16JS-90LL datasheet(56/65 Pages) EMLSI

tên linh kiện	EMC646SP16JS-90LL

Giải thích chi tiết về linh kiện	4Mx16 bit CellularRAM

PDF	65 Pages

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nhà sản xuất	EMLSI [Emerging Memory & Logic Solutions Inc]

Trang chủ	http://www.emlsi.com

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56 / 65 page

EMC646SP16J

4Mx16 CellularRAM

Preliminary

Figure 45. Asynchronous WRITE Followed by Burst READ

Note:

1. Non-default BCR settings for asynchronous WRITE followed by burst READ: Fixed or variable latency; latency code two (three clocks); WAIT

active LOW; WAIT asserted during delay.

2. When transitioning between asynchronous and variable-latency burst operations, CE# must go HIGH. CE# can stay LOW when transitioning to

fixed-latency burst READs. A refresh opportunity must be provided every tCEM. A refresh opportunity is satisfied by either of the following two

conditions: a) clocked CE# HIGH, or b) CE# HIGH for longer than 15ns.

CLK

ADV#

CE#

OE#

WAIT

DQ[15:0]

Don’t Care

Undefined

A[21:0]

LB#/UB#

VIH

VIL

WE#

VIH

VIL

VIH

VIL

VIH

VIL

VIH

VIL

VIH

VIL

VIH

VIL

VOH

VOL

VIH

VIL

Note 2

Valid Address

Valid

Output

tAS

VOH

VOL

Valid

Output

Valid

Output

Valid

Output

tCBPH

tOHZ

tCEW

tBOE

tACLK

tKOH

Data

Valid Address

Data

tCLK

tWC

tSP

tHD

tSP

tHD

tAW

tWR

tAVS

tVP

tVS

tCW

tCSP

tWC

tBW

tSP

tSP tHD

tAS

tWP

tWPH

tDH

tDW

High-Z

tAVH

tCVS

High-Z

tHD

IN/OUT

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