Renesas User System Interface Board HS7047ECH61H Instrukcja Użytkownika Pobierz pdf (Strona 71)

3.5 Support of the Target MCU

3.5.1 Memory Space

The MCU has a 4-Gbyte memory space in its architecture.

On-Chip ROM Area

• Access to the on-chip ROM area

The emulator includes substitute RAM for the MCU’s on-chip ROM. The substitute RAM is accessed if an

attempt is made to access the on-chip ROM. The on-chip ROM area access differs between user program

execution and the emulator commands.

Only read access is enabled during execution of the user program. A break occurs if the on-chip ROM area is

written to. However, if write access to the on-chip ROM area has been selected in the [Configuration] dialog

box, both reading and writing are enabled.

For access with emulator functions (Memory window or loading), read and write are always enabled.

The on-chip ROM area is read in one state and written to in six states.

• Flash memory

The emulator does not support the flash memory.

• Capacitance between on-chip ROM and on-chip RAM

In this emulator, note that the capacitance between on-chip ROM and on-chip RAM differs from that of the

product MCU. The display of the [Status] window applies to the product MCU.

Table 3.6 Capacitance between On-Chip ROM and On-Chip RAM

Item Emulator Product MCU

Capacitance of on-chip ROM 1 Mbyte

(H’00000000 to H’0000FFFF)

16 kbytes

(H’FFFF0000 to H’FFFF3FFF)

Capacitance of on-chip RAM

16 kbytes

(H’FFFFC000 to H’FFFFFFFF)

Refer to the MCU’s hardware

manual.

On-Chip I/O Area

If an attempt is made to access the on-chip I/O area, the on-chip I/O area in the MCU installed in the emulator is

accessed. To break the user program when the on-chip I/O area is written to or accessed, use the hardware break

or internal break.

External Memory Area

The MCU’s external memory area can be set with all memory attributes that the emulator supports.

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Renesas User System Interface Board HS7047ECH61H Instrukcja Użytkownika Strona 71