Renesas H8SX1664 Informações Técnicas descarregar pdf (Página 20)

Chapter 7.Modes

The CPU board supports User mode and Boot mode. User mode may be used to run and debug user code, while Boot mode may only be

used to program the Renesas microcontroller with program code. To program the user boot MAT, the device must be in Boot mode. Further

details of programming the MATs are available in the H8SX/1663 Group hardware manual.

When using the E8 debugger supplied with the RSK the mode transitions are executed automatically. The CPU board provides

the capability of changing between User and Boot / User Boot modes using a simple latch circuit. This is only to provide a

simple mode control on this board when the E8 is not in use.

To manually enter boot mode, press and hold the SW1/BOOT. The mode pins 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.

More information on the operating modes can be found in the device hardware manual.

7.1.FDT Settings

In the following sections the tables identify the FDT settings required to connect to the board using the E8Direct debugger interface. The ‘A’

interface is inverted on the RSK board. This is to ensure the board can function in a known state when the E8 is connected but not

powered. The E8 Debugger contains the following ‘pull’ resistors.

E8 Pin Resistor

A Pull Down (100k)

B Pull Up (100k)

C Pull Down (100k)

D Pull Up (100k)

Table 7-1: E8 Mode Pin drives

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 38 39

Sem comentários

Renesas H8SX1664 Informações Técnicas Página 20