UT7C138C45GPX datasheet(8/21 Pages) AEROFLEX

Part #	UT7C138C45GPX

Description	4Kx8/9 Radiation-Hardened Dual-Port Static RAM with Busy Flag

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Manufacturer	AEROFLEX [Aeroflex Circuit Technology]

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Figure 3b. Read Cycle 2

CE

OE

Data Out

tLZCE

t

LZOE

t

DOE

tACE

tHZOE

t

HZCE

Figure 3c. Read Timing with Port-to-Port Delay

Address

R/W

R

Data

INR

AddressL

DATAOUTL

tWC

MATCH

t

PWE

tSD

tHD

VALID

MATCH

VALID

tDDD

t

WDD

Assumptions:

1. Address valid prior to or coincident with CE transition LOW

2. R/W is HIGH for read cycle

Assumptions:

1. BUSY = HIGH for the writing port

2. CE L = CER = LOW

Address

Data Out

Figure 3a. Read Cycle 1

t

RC

t

OHA

tAA

Data Valid

Assumptions:

1.R/W is HIGH for read cycle

2.Device is continuously selected CE =LOW and OE=LOW

Previous Data Valid

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