UPD784036 データシートの表示（PDF） - NEC => Renesas Technology

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UPD784036

16/8-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD784035(A), 784036(A)

6. CPU ARCHITECTURE

6.1 Memory Space

A 1M-byte memory space can be accessed. By using a LOCATION instruction, mode for mapping internal data

areas (special function registers and internal RAM) can be selected. A LOCATION instruction must always be

executed after a reset, and can be used only once.

(1) When the LOCATION 0 instruction is executed

• Internal memory

The table below indicates the internal data areas and internal ROM areas of each product.

Product name

µPD784035(A)

µPD784036(A)

Internal data area

0F700H-0FFFFH

Internal ROM area

00000H-0BFFFH

00000H-0F6FFH

Caution The following internal ROM areas, existing at the same addresses as the internal data areas,

cannot be used when the LOCATION 0 instruction is executed:

Product name

µPD784035(A)

µPD784036(A)

Unusable area

-

0F700H-0FFFFH (2 304 bytes)

• External memory

External memory is accessed in external memory expansion mode.

(2) When the LOCATION 0FH instruction is executed

• Internal memory

The table below lists the internal data areas and internal ROM areas for each product.

Product name

µPD784035(A)

µPD784036(A)

Internal data area

FF700H-FFFFFH

Internal ROM area

00000H-0BFFFH

00000H-0FFFFH

• External memory

External memory is accessed in external memory expansion mode.

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