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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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ATmega64A bảng dữ liệu(PDF) 292 Page - ATMEL Corporation |
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ATmega64A bảng dữ liệu(HTML) 292 Page - ATMEL Corporation |
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292 / 392 page  292 8160C–AVR–07/09 ATmega64A Do_spm: ; check for previous SPM complete Wait_spm: lds temp1, SPMCSR sbrc temp1, SPMEN rjmp Wait_spm ; input: spmcrval determines SPM action ; disable interrupts if enabled, store status in temp2, SREG cli ; check that no EEPROM write access is present Wait_ee: sbic EECR, EEWE rjmp Wait_ee ; SPM timed sequence sts SPMCSR, spmcrval spm ; restore SREG (to enable interrupts if originally enabled) out SREG, temp2 ret 26.8.13 ATmega64A Boot Loader Parameters In Table 26-6 through Table 26-8, the parameters used in the description of the Self-program- ming are given. Note: 1. The different BOOTSZ Fuse configurations are shown in Figure 26-2 Note: 1. For details about these two section, see “NRWW – No Read-While-Write Section” on page 282 and “RWW – Read-While-Write Section” on page 282 Table 26-6. Boot Size Configuration (1) BOOTSZ1 BOOTSZ0 Boot Size Pages Appli- cation Flash Section Boot Loader Flash Section End Applic- ation Section Boot Reset Address (Start Boot Loader Section) 11 512 words 4 0x0000 - 0x7DFF 0x7E00 - 0x7FFF 0x7DFF 0x7E00 10 1024 words 8 0x0000 - 0x7BFF 0x7C00 - 0x7FFF 0x7BFF 0x7C00 01 2048 words 16 0x0000 - 0x77FF 0x7800 - 0x7FFF 0x77FF 0x7800 00 4096 words 32 0x0000 - 0x6FFF 0x7000 - 0x7FFF 0x6FFF 0x7000 Table 26-7. Read-While-Write Limit () Section Pages Address Read-While-Write (RWW) 224 0x0000 - 0x6FFF No Read-While-Write (NRWW) 32 0x7000 - 0x7FFF |
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