Renesas M16C/6NK Manual de usuario descargar pdf (Pagina 17)

Chapter 7. Modes

The RSK supports Boot mode and Single chip mode.

Details of programming the FLASH memory is described in the M16C/6NK Group Hardware Manual.

7.1. Boot mode

The boot mode settings for this RSK are shown in Table 7-1: Boot Mode pin settings below:

CNVSS P5.0 P5.5

LSI State after Reset

End

1 1 0

Boot Mode

Table 7-1: Boot Mode pin settings

The software supplied with this RSK only supports Boot mode using an E8 and HEW. However, hardware exists to enter boot mode

manually, do not connect the E8 in this case. Press and hold the SW1/BOOT. The mode pins above are held in their boot states while reset

is pressed and released. Release the boot button. The BOOT LED will be illuminated to indicate that the microcontroller is in boot mode.

When neither the E8 is connected nor the board is placed in boot mode (with CNVSS and P5.5 being pulled low during reset) as above, the

P5.5 pin is pulled high by a 10k resistor, the P.5.0 pin is pulled high by a 100k resistor and the CNVSS is pulled low by a 100k resistor.

When an E8 is used these three pins are controlled by the E8.

7.2. Single chip mode

This RSK is configured to always boot in Single Chip mode when the E8 is not connected and the boot switch is not depressed as CNVSS

is pulled down by a 100k resistor. Refer to M16C/6NK Group Hardware Manual for details of Single chip mode.

CNVSS P5.0 P5.5

LSI State after Reset

End

0 1 1

Single Chip Mode

Table 7-2: Single Chip Mode pin settings

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 29 30

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Renesas M16C/6NK Manual de usuario Pagina 17