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R5F72115D160FPV Datasheet(PDF) 914 Page - Renesas Technology Corp |
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R5F72115D160FPV Datasheet(HTML) 914 Page - Renesas Technology Corp |
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914 / 1228 page ![]() Section 21 Flash Memory Rev. 2.00 May. 08, 2008 Page 890 of 1200 REJ09B0344-0200 21.2.3 Mode Comparison The comparison table of programming and erasing related items about boot mode, user program mode, user boot mode, and programmer mode is shown in table 21.2. Table 21.2 Comparison of Programming Modes Boot Mode User Program Mode User Boot Mode Programmer Mode Programming/ erasing environment On-board programming On-board programming On-board programming Off-board programming Programming/ erasing enable MAT User MAT User boot MAT User MAT User MAT User MAT User boot MAT Programming/ erasing control Command method Programming/ erasing interface Programming/ erasing interface — All erasure Possible (Automatic) Possible Possible Possible (Automatic) Block division erasure Possible* 1 Possible Possible Not possible Program data transfer From host via SCIF From optional device via RAM From optional device via RAM Via programmer User branch function Not possible Possible Possible Not possible Reset initiation MAT Embedded program storage MAT User MAT User boot MAT* 2 Embedded program storage MAT Transition to user mode Mode setting change and reset FWE setting change Mode setting change and reset — Notes: 1. All-erasure is performed. After that, the specified block can be erased. 2. Initiation starts from the embedded program storage MAT. After checking the flash- memory related registers, initiation starts from the reset vector of the user MAT. • The user boot MAT can be programmed or erased only in boot mode and programmer mode. • The user MAT and user boot MAT are all erased in boot mode. Then, the user MAT and user boot MAT can be programmed by means of the command method. However, the contents of the MAT cannot be read until this state. Only user boot MAT is programmed and the user MAT is programmed in user boot mode or only user MAT is programmed because user boot mode is not used. • In user boot mode, the boot operation of the optional interface can be performed by a mode pin setting different from user program mode. |
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