RL78/D1A User's Manual: Hardware - Renesas

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Under development Preliminary document Specifications in this document are tentative and subject to change. RL78/D1A CHAPTER 28 FLASH MEMORY Boot cluster 1 Boot cluster 0 Block number F E D C B A 9 8 7 6 5 Program Program Program Program Program Program Program Program Boot program Boot program Boot program Boot program Figure 28-12. Example of Executing Boot Swapping 02000H 4 3 Boot program 2 Boot program 1 Boot program 0 Boot program 00000H Booted by boot cluster 0 Writing blocks 8 to F F E D C B A 9 8 7 6 5 4 3 2 1 0 New boot program New boot program New boot program New boot program New boot program New boot program New boot program New boot program Boot program Boot program Boot program Boot program Boot program Boot program Boot program Boot program Erasing block A F Boot program E Boot program D Boot program C Boot program B Boot program A 9 8 7 New boot program 6 New boot program 5 New boot program 4 New boot program 3 New boot program 2 New boot program 1 New boot program 0 New boot program ...... Erasing block 8 F Program E Program D Program C Program B Program A Program 9 Program 8 7 6 5 4 3 2 1 0 Boot program Boot program Boot program Boot program Boot program Boot program Boot program Boot program Erasing block 9 F Program E Program D Program New boot program 00000H R01UH0317EJ0004 Rev. 0.04 1181 Feb. 22, 2013 C B A 9 8 7 6 5 4 3 2 1 0 F Boot swap Boot program E Boot program D Boot program C Boot program B Boot program A Boot program 9 Boot program 8 Boot program 02000H 7 New boot program 6 New boot program 5 New boot program 4 New boot program 3 New boot program 2 New boot program 1 New boot program 0 New boot program 00000H Booted by boot cluster 1 Erasing block F F E D C B A 9 8 7 New boot program 6 New boot program 5 New boot program 4 New boot program 3 New boot program 2 New boot program 1 New boot program 0 New boot program Program Program Program Boot program Boot program Boot program Boot program Boot program Boot program Boot program Boot program F E D Boot program Boot program Boot program C Boot program Boot program B A 9 7 6 5 4 3 2 1 0 Boot program Boot program ...... Erasing block 8 F Boot program E Boot program D Boot program C Boot program B Boot program A Boot program 9 Boot program 8 7 New boot program 6 New boot program 5 New boot program 4 New boot program 3 New boot program 2 New boot program 1 New boot program 0 New boot program Writing blocks 8 to F 8 Boot program New boot program 02000H New boot program New boot program New boot program New boot program New boot program New boot program Erasing block F F E D C B A 9 8 7 6 5 4 3 2 1 0 Boot program Boot program Boot program Boot program Boot program Boot program Boot program Boot program Erasing block 9 F Boot program E Boot program D Boot program C Boot program B Boot program A Boot program 9 8 7 New boot program 6 New boot program 5 New boot program 4 New boot program 3 New boot program 2 New boot program 1 New boot program 0 New boot program
Under development Preliminary document Specifications in this document are tentative and subject to change. RL78/D1A CHAPTER 28 FLASH MEMORY 28.7.2 Flash shield window function The flash shield window function is provided as one of the security functions for self programming. It disables writing to and erasing areas outside the range specified as a window only during self programming. The window range can be set by specifying the start and end blocks. The window range can be set or changed during both on-board/off-board programming and self programming. Writing to and erasing areas outside the window range are disabled during self programming. During on-board/offboard programming, however, areas outside the range specified as a window can be written and erased. Flash memory area Flash shield range Window range Flash shield range Figure 28-13. Flash Shield Window Setting Example (Start Block: 04H, End Block: 06H) 0FFFFH 01C00H 01BFFH 01000H 00FFFH 00000H Block 3FH Block 3EH √: On-board/off-board programming ×: Self programming Block 06H (end block) Block 05H Block 04H (start block) Block 03H Block 02H Block 01H Block 00H Methods by which writing can be performed √: On-board/off-board programming √: Self programming √: On-board/off-board programming ×: Self programming Cautions 1. If the rewrite-prohibited area of the boot cluster 0 overlaps with the flash shield window range, prohibition to rewrite the boot cluster 0 takes priority. 2. The flash shield window can only be used for the code flash memory (and is not supported for the data flash memory). Table 28-12. Relationship between Flash Shield Window Function Setting/Change Methods and Commands Programming conditions Window Range Setting/Change Methods Self-programming Specify the starting and On-board/Off-board programming ending blocks by the flash self programming library. Specify the starting and ending blocks on GUI of dedicated flash memory programmer, etc. Execution Commands Block erase Write Block erasing is enabled only within the window range. Block erasing is enabled also outside the window range. Writing is enabled only within the range of window range. Writing is enabled also outside the window range. Remark See 28.6 Security Settings to prohibit writing/erasing during on-board/off-board programming. R01UH0317EJ0004 Rev. 0.04 1182 Feb. 22, 2013
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User’s Manual 16 RL78/D1A 16-Bit
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NOTES FOR CMOS DEVICES (1) VOLTAGE
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Conventions Data significance: High
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CONTENTS CHAPTER 1 OUTLINE.........
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3.4.4 Short direct addressing .....
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6.8 Operation of Plural Channels of
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34.2 64-pin products 1276 R5F10CLDx
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34.4 100-pin products 1278 CHAPTER
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