UT54ACS630 datasheet(1/10 Pages) AEROFLEX

Part #	UT54ACS630

Description	RadHard EDAC

PDF	10 Pages

Scroll/Zoom	100%

Manufacturer	AEROFLEX [Aeroflex Circuit Technology]

Direct Link	http://www.aeroflex.com

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1

Standard Products

UT54ACS630

RadHard EDAC

Datasheet

May 16, 2012

www.aeroflex.com/radhard

FEATURES

 DC operating voltage range 4.5V to 5.5V

 Input logic levels

- VIL = 30% of VCC

- VIH = 70% of VCC

 Fast propagation delay 11ns (max)



m Commercial RadHardTM CMOS

- Total dose: 100K rad(Si)

- Single Event Latchup immune

- SEU Onset LET: >108 MeV-cm2/mg

 Standard Microcircuit Drawing 5962-06239

- QML Q and V

 Package:

- 28-lead flatpack

DESCRIPTION

The UT54ACS630 is a RadHard 16-bit parallel error detection

and correction circuit. It uses a modified Hamming code to gen-

erate a 6-bit checkword from each 16-bit data word. The check-

word is stored with the data word during a memory write cycle;

during a memory read cycle a 22-bit word is taken from memory

and checked for errors. Single bit errors in the data words are

flagged and corrected. Single bit errors in the checkword are

flagged, but not corrected. The position of the incorrect bit is

pinpointed, in both cases, by the 6-bit error syndrome code

which is output during the error correction cycle.

PIN DESCRIPTION

Pin Names

Description

S0, S1

Mode Control Inputs

DBn

Bidirectional Data Bus

CBn

Bidirectional Checkbit Bus

SEF

Single Error Flag Output

DEF

Double Error Flag Output

1

2

3

4

5

7

6

28

27

26

25

24

22

23

DEF

DB0

DB1

DB2

DB3

DB4

DB5

VDD

SEF

S1

S0

CB0

CB2

CB1

28-Lead Flatpack

Top View

8

9

10

11

12

13

14

21

20

19

18

17

16

15

DB6

DB7

DB8

DB9

DB10

DB11

VSS

CB3

CB4

CB5

DB15

DB14

DB13

DB12

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