Section 3 Notes On Use; I/O Register Differences Between Actual Mcu And E6000; Access To The Reserved Area - Renesas H8S/2678 Manual

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3.1

In the E6000, one evaluation chip emulates several types of MCU. Therefore, there are some

differences in I/O registers between an actual MCU and the E6000. Note these differences when

accessing the I/O registers.

I/O port is in the input state at default. The I/O register contents indicate the emulator port status.

When the user system interface cable is not connected, the read value is 1 due to the E6000 pull-

up resistors.

In the E6000, accesses to the following registers for controlling the flash memory are invalid.

• RAM emulation register (RAMER: H'FEDB)

• System control register 2 (SYSCR2: H'FF42)

• Flash memory control register 1 (FLMCR1: H'FFC8)

• Flash memory control register 2 (FLMCR2: H'FFC9)

• Erase block register 1 (EBR1: H'FFCA)

• Erase block register 2 (EBR2: H'FFCB)

3.2

When accessing the reserved area, note the following:

If the reserved area is used, the operation in the actual MCU cannot be guaranteed. If the user

program extends to the reserved area during debugging, select the MCU having the largest ROM

capacity (for example, debug the program for the H8S/2675R with the H8S/2676R memory

mapping).

Section 3 Notes on Use

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