MAS2911CD datasheet(5/13 Pages) ETC1

Nome de Peças	MAS2911CD

Descrição Electrónicos	RADIATION HARD MICROPROGRAM SEQUENCER

PDF	13 Pages

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Fabricante Electrônico	ETC1 [List of Unclassifed Manufacturers]

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MA2909/11

Execute Cycle

2909 inputs

(from µWR)

Internal

Registers

2909 Output

ROM Output

Contents of µWR

(instruction

being executed)

J + 1

I(J + 1)

I(J)

J + 2

JSR A

I(J + 1)

J + 3

I(A)

JSR A

A + 1

J + 3

A + 1

I(A + 1)

I(A)

A + 2

J + 3

A + 2

RTS

I(A + 1)

A + 3

J + 3

I(J + 3)

RTS

J + 4

I(J + 4)

I(J + 3)

J + 5

I(J + 5)

I(J + 4)

S1, S0

PUP

µPC

STK0

STK1

STK2

STK3

(Y)

µWR

Table 3: Subroutine Execution

Execute

Cycle

Address

J - 1

J + 1

J + 2

J + 3

J + 4

A + 1

A + 2

CONTROL MEMORY

Microprogram

Sequencer

Instruction

JSR A

I(A)

RTS

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