Renesas H8SX/1668R Manual Do Utilizador

 

Chapter 7.  Modes 

This RSK supports two Boot modes and Single Chip mode. 

Details of programming the FLASH memory is described in the H8SX/1668R 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: 

0 0 1 0 0  SCI 

boot 

mode 

0 0 1 0 1  USB 

boot 

mode 

The software supplied with this RSK supports debugging with E10A which does not need Boot mode. To enter the Boot mode manually, do 

not connect the E10A in this case. Press and hold the SW1/BOOT. The BOOT LED will be illuminated to indicate that the microcontroller is 

in boot mode. 

SCI boot mode: boot mode executes programming/erasure of the user MAT or user boot MAT by means of the control command and 

program data transmitted from the externally connected host via the on-chip SCI_4. 

USB boot mode: executes programming/erasing of the user MAT by means of the control command and program data transmitted from the 

externally connected host via the USB. 

7.2. Singe chip mode 

This is default operating mode of this RSK. Refer to H8SX/1668R Group Hardware Manual for details of Single chip mode. The Single chip 

mode settings for this RSK are shown in Table 7-2: Single chip mode pin settings below: 

0 

1 

1 

1 

Single chip Mode 

Programming/erasure of the user MAT is executed by downloading an on-chip program. The user boot MAT cannot be 

programmed/erased in user program mode.   

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