MAS2909FS datasheet(6/13 Pages) ETC1 | RADIATION HARD MICROPROGRAM SEQUENCER

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MAS2909FS Fiches technique(PDF) 6 Page - List of Unclassifed Manufacturers

No de pièce	MAS2909FS

Description	RADIATION HARD MICROPROGRAM SEQUENCER

PDF	13 Pages

Scroll/Zoom	100%

Fabricant	ETC1 [List of Unclassifed Manufacturers]

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MAS2909FS Fiches technique(HTML) 6 Page - List of Unclassifed Manufacturers

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6 / 13 page

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MA2909/11

6

T0

0

H

X

X

J + 1

-

-

-

-

J + 1

I(J + 1)

I(J)

T1

0

H

X

X

J + 2

-

-

-

-

J + 2

JSR A

I(J + 1)

T2

3

L

H

A

J + 3

-

-

-

-

A

I(A)

JSR A

T3

0

H

X

X

A + 1

J + 3

-

-

-

A + 1

I(A + 1)

I(A)

T4

0

H

X

X

A + 2

J + 3

-

-

-

A + 2

JSR B

I(A + 1)

T5

2

L

L

X

A + 3

J + 3

-

-

-

B

RTS

JRS B

T6

0

H

X

X

B + 1

A + 3

J + 3

-

-

A+ 3

I(A + 3)

RTS

T7

0

H

X

X

A + 4

J + 3

-

-

-

A + 4

RTS

I(A + 3)

T8

2

L

L

X

A + 5

J + 3

-

-

-

J + 3

I(J + 3)

RTS

S1, S0

FE

PUP

D

µPC

STK0

STK1

STK2

STK3

Y

(Y)

µWR

Address

J - 1

J

J + 1

J + 2

J + 3

-

-

-

-

A

A + 1

A + 2

A + 3

A + 4

-

-

-

-

B

-

CONTROL MEMORY

T9

0

H

X

X

J + 4

-

-

-

-

J + 4

I(J + 4)

I(J + 3)

Table 4: Two Nested Subroutines

Microprogram

Sequencer

Instruction

-

-

-

JSR A

-

-

-

-

-

-

-

JSR B

-

RTS

-

-

-

-

RTS

-

Execute

Cycle

T0

T1

T2

T9

T3

T4

T5

T7

T8

T6

Execute Cycle

2909 inputs

(from µWR)

Internal

Registers

2909 Output

ROM Output

Contents of µWR

(instruction

being executed)

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