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H8SX/1663 Datasheet(PDF) 959 Page - Renesas Technology Corp |
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H8SX/1663 Datasheet(HTML) 959 Page - Renesas Technology Corp |
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959 / 1158 page ![]() Section 21 Flash Memory (0.18- µm F-ZTAT Version) Rev.1.00 Jun. 07, 2006 Page 907 of 1102 REJ09B0294-0100 21.7.2 USB Boot Mode 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. In USB boot mode, the tool for transmitting the control command and program data, and the program data must be prepared in the host. The system configuration in USB boot mode is shown in figure 21.9. Interrupts are ignored in USB boot mode. Configure the user system so that interrupts do not occur. Host or self-power HUB Programming tool and program data Software for analyzing control commands (on-chip) This LSI Flash memory On-chip RAM USB PM2 MD3 to MD0 PM4 1 0010 PM3 0: Self power setting 1: Bus power setting VBUS USB+ USB- Rs Data transmission/ reception Rs 1.5 k Ω Figure 21.9 System Configuration in USB Boot Mode |
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