4571 Datasheet, PDF(95/126 Page) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

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4571 Datasheet, PDF (95/126 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

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4571 Group

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

TAY (Transfer data to Accumulator from register Y)

Instruc-

tion

code

0 0 0 0 0 1 1 1 1 1 2 0 1 F 16

Number of

words

Number of

cycles

Flag CY

Skip condition

Opera- (A) â (Y)

tion:

Grouping: Register to register transfer

Description: Transfers the contents of register Y to register A.

TAZ (Transfer data to Accumulator from register Z)

Instruc-

tion

code

0 0 0 1 0 1 0 0 1 1 2 0 5 3 16

Number of

words

Number of

cycles

Flag CY

Skip condition

Opera- (A1, A0) â (Z1, Z0)

tion: (A3, A2) â 0

Grouping: Register to register transfer

Description: Transfers the contents of register Z to the low-order 2 bits

(A1, A0) of register A. â0â is stored to the high-order 2 bits

(A3, A2) of register A.

TBA (Transfer data to register B from Accumulator)

Instruc-

tion

code

0 0 0 0 0 0 1 1 1 0 2 0 0 E 16

Number of

words

Number of

cycles

Flag CY

Skip condition

Opera- (B) â (A)

tion:

Grouping: Register to register transfer

Description: Transfers the contents of register A to register B.

TDA (Transfer data to register D from Accumulator)

Instruc-

tion

code

0 0 0 0 1 0 1 0 0 1 2 0 2 9 16

Number of

words

Number of

cycles

Flag CY

Skip condition

Opera- (DR2âDR0) â (A2âA0)

tion:

Grouping: Register to register transfer

Description: Transfers the contents of the low-order 3 bits (A2âA0) of

Rev.1.02 May 25, 2007 Page 95 of 124

REJ03B0179-0102

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