Renesas Single-Chip Microcomputer M37531T-ADS User Manual download pdf (Page 68)

M38000T2-CPE User’s Manual 4. Hardware Specifications

REJ10J0301-0400 Rev.4.00 March 01, 2006

Page 68 of 78

4.5 Notes on Using This Product

Notes on using this product are listed below. When debugging the MCU using this product, be careful about the following

precautions.

IMPORTANT

Note on the User System:

z For starting up the emulator normally, the following are needed.

(1) Connection to the emulator MCU

(2) Power supply to the emulator MCU (Vcc and GND)

- The Vcc pin is connected to the user system to observe the voltage of the user system. Therefore the

emulator cannot supply the power to the user system. Design you system so that the user system is

powered separately.

- The voltage of the user system should be within the MCU’s specified range and between +1.8 to 5.0 V.

- Do not change the voltage of the user system after turning on the power.

(3) Clock supply to the emulator MCU

(4) RESET pin

When debugging with the M38000T2-CPE, use either an open-drain type reset IC or CR reset circuit. The

recommended pull-up value is about 10k. The MCU can be reset by outputting “L” to the user system

through the reset clip on the M38000T2-CPE. However, if the reset circuit on the user system is an H-

output type RESET IC, it cannot be set to "L" and the emulator will not operate properly.

(5) Other pins

According to the MCU specifications, terminate the Vref pin (if the MCU has it) or CNVss pins properly.

Notes on the Self-check:

z If the self-check does not result normally, the emulator may be damaged. Then contact your local distributor.

z Run the self-check with the user system connected.

Note on Quitting the 740 Compact Emulator Debugger:

z To restart the emulator debugger, always shut power to the emulator main unit off once and then on again.

Note on Downloading the Firmware:

z Do not shut OFF power while firmware is being downloaded. Doing so, the emulator will not start up properly.

If power is shut off by mistake, redownload the firmware again.

Note on the Clock Supply:

z The clock supplied to the emulator MCU is available from only the oscillator circuit in the user system.

Notes on the User System (Power Supply, Order of Powering On):

z Before powering on your emulator system, check that the host machine, the emulator, the converter board and

user system are all connected correctly. Next, turn on the power to each equipment following the procedure

below.

(1) Turn ON/OFF the user system and the emulator as simultaneously as possible.

(2) When the emulator debugger starts up, check the target status LEDs on the emulator to see if this product

is ready to operate.

Is the power supplied to the emulator MCU? Check that target status LED (POWER) is ON.

Is the clock supplied to the emulator MCU? Check that target status LED (CLOCK) is ON.

Whether RESET operation on the emulator MCU is possible? Check that target status LED (RESET) is OFF.

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Renesas Single-Chip Microcomputer M37531T-ADS User Manual Page 68

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