4501 datasheet(91/212 Pages) RENESAS

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INSTRUCTIONS

1-79

4501 Group

HARDWARE

Rev.2.01

Feb 07, 2005

REJ09B0192-0201

TAD (Transfer data to Accumulator from register D)

0001010001

051

–

Grouping:

Description: Transfers the contents of register D to the

low-order 3 bits (A2–A0) of register A.

Note:

When this instruction is executed, “0” is

stored to the bit 3 (A3) of register A.

TADAB (Transfer data to register AD from Accumulator from register B)

1000111001

239

–

Grouping:

A/D conversion operation

Description: In the A/D conversion mode (Q13 = 0), this in-

struction is equivalent to the NOP instruction.

In the comparator mode (Q13 = 1), trans-

fers the contents of register B to the

high-order 4 bits (AD7–AD4) of comparator

the low-order 4 bits (AD3–AD0) of compara-

tor register.

(Q13 = bit 3 of A/D control register Q1)

Operation:

(AD7–AD4)

← (B)

(AD3–AD0)

← (A)

Operation:

(A2–A0)

← (DR2–DR0)

(A3)

← 0

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

TAI1 (Transfer data to Accumulator from register I1)

1001010011

253

––

Grouping:

Interrupt operation

Description: Transfers the contents of interrupt control

Operation:

(A)

← (I1)

TAK0 (Transfer data to Accumulator from register K0)

1001010110

256

–

Grouping:

Input/Output operation

Description: Transfers the contents of key-on wakeup

control register K0 to register A.

Operation:

(A)

← (K0)

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