UPD17062 datasheet(42/298 Pages) RENESAS

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µPD17062

6. GENERAL-PURPOSE REGISTER (GR)

The general-purpose register is allocated in data memory space, and is used to perform direct operations

on the data in data memory and to transfer data to and from data memory.

6.1

STRUCTURE OF THE GENERAL-PURPOSE REGISTER

Fig. 6-1 shows the structure of the general-purpose register.

As shown in Fig. 6-1, 16 words (16 words

× 4 bits) having the same row address in data memory space can

be used as the general-purpose register.

The row address to be used as the general-purpose register can be specified using the general-purpose

high-order four bits are fixed to 0 so, within the data memory space, only row addresses 0H to 7H of BANK0

can be used as the general-purpose register.

See Section 8.6.

6.2

FUNCTION OF THE GENERAL-PURPOSE REGISTER

The general-purpose register can be used to perform an operation or to transfer data between itself and

data memory with the execution of a single instruction. The general-purpose register is allocated in data

memory space. This enables an operation or transfer to be performed between data memory locations by

the execution of a single instruction.

Like other data memory, the general-purpose register can be controlled using a data memory manipulation

instruction.

UPD17062 데이터시트(PDF) 42 Page - Renesas Technology Corp