Renesas Compact Emulator M30620T-CPE - Manual (Page 10)

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IMPORTANT
Notes on Differences between the Actual MCU and Emulator:
• Operations of the emulator differs from those of mask MCUs as listed below.
(1) Reset condition
Set the time for starting up (0.2 to 0.8 Vcc) 1 µs or less.
(2) Data values of RAM and ROM areas at power-on
When power is turned on, the RAM and ROM areas of the emulator are defaulted to 04H.
(3) Register values when power is turned on
When power is turned on, the emulator's register values are defaulted to 0. However, the
program counter is defaulted to the reset vector value (C0000
16
) initially set by the emulator.
(4) Internal memory (RAM and ROM) capacity, etc.
Because the internal memories (RAM and ROM) are emulated by the emulation memory, the
capacity and assignment of the emulator's internal memories differ from those of the actual
MCU. For memory mapping, see "4.2 Memory Map" (page 35).
(5) Characteristics of ports P0
0
to P5
7
As ports P0
0
to P5
7
are connected via emulation circuits, the electric characteristics etc. differ
from those of actual MCU. The device used for the port emulation circuit is;
Device: M60081L-0142FP
(6) MCU function
Some MCU functions cannot be used in the emulator system. For details, refer to "Note on
MCU Functions That Cannot Be Used with This Emulator" (page 11).
(7) Pullup control register
Operations of the pullup control registers are different from those of actual MCUs.
* Not pulled up in actual MCUs.
When pull-up control register 1 for port pins P4
4
- P4
7
(bit 1 of address 3FDh: PU11) is set to
"1" (pulled up), port pins P1
5
- P1
7
are also pulled up regardless of the setting of pullup control
register 0 for port pins P1
4
- P1
7
(bit 3 of address 3FCh: PU03).
However, this problem arises only in the compact emulator and does not arise in actual MCUs.
• As a pitch converter board and other devices are used between the evaluation MCU and the target
system, some characteristics are slightly different from those of the actual MCU. Therefore, be sure
to evaluate your system with an evaluation MCU. Before starting mask production, evaluate your
system and make final confirmation with an ES (Engineering Sample) version MCU.
Pullup control register
PU03
(P1
4
- P1
7
)
0
1
0
1
PU11
(P4
4
- P4
7
)
0
0
1
1
This product Actual MCU
Not pulled up
Pulled up
Pulled up*
Pulled up
Not pulled up
Pulled up
Not pulled up
Pulled up
State of ports P1
5
- P1
7