4518 datasheet(111/160 Pages) RENESAS

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Rev.3.01

2005.06.15

page 111 of 157

REJ03B0008-0301

4518 Group

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.

Operation:

(A2–A0)

← (DR2–DR0)

(A3)

← 0

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

TABPS (Transfer data to Accumulator and register B from PreScaler)

TABSI (Transfer data to Accumulator and register B from register SI)

1001111000

278

–

Grouping:

Serial I/O operation

Description: Transfers the high-order 4 bits (SI7–SI4) of

serial I/O register SI to register B, and

transfers the low-order 4 bits (SI3–SI0) of

serial I/O register SI to register A.

Operation:

(B)

← (SI7–SI4)

(A)

← (SI3–SI0)

1001110101

275

–

Grouping:

Timer operation

Description: Transfers the high-order 4 bits (TPS7–

TPS4) of prescaler to register B, and

transfers the low-order 4 bits (TPS3–TPS0)

of prescaler to register A.

Operation:

(B)

← (TPS7–TPS4)

(A)

← (TPS3–TPS0)

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)

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