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M38869FFAHP Datasheet(PDF) 10 Page - Mitsubishi Electric Semiconductor |
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M38869FFAHP Datasheet(HTML) 10 Page - Mitsubishi Electric Semiconductor |
10 / 110 page 10 3886 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER MITSUBISHI MICROCOMPUTERS MEMORY Special Function Register (SFR) Area The Special Function Register area in the zero page contains con- trol registers such as I/O ports and timers. RAM RAM is used for data storage and for stack area of subroutine calls and interrupts. ROM The first 128 bytes and the last 2 bytes of ROM are reserved for device testing and the rest is user area for storing programs. Pro- gram/Erase of the reserved ROM area is possible in the EPROM version and the flash memory version Interrupt Vector Area The interrupt vector area contains reset and interrupt vectors. Zero Page Access to this area with only 2 bytes is possible in the zero page addressing mode. Special Page Access to this area with only 2 bytes is possible in the special page addressing mode. Fig. 8 Memory map diagram 010016 000016 004016 FF0016 FFDC16 FFFE16 FFFF16 192 256 384 512 640 768 896 1024 1536 2048 XXXX16 00FF16 013F16 01BF16 023F16 02BF16 033F16 03BF16 043F16 063F16 083F16 4096 8192 12288 16384 20480 24576 28672 32768 36864 40960 45056 49152 53248 57344 61440 F00016 E00016 D00016 C00016 B00016 A00016 900016 800016 700016 600016 500016 400016 300016 200016 100016 F08016 E08016 D08016 C08016 B08016 A08016 908016 808016 708016 608016 508016 408016 308016 208016 108016 YYYY16 ZZZZ16 RAM ROM 0FFE16 0FFF16 SFR area Not used Interrupt vector area ROM area Reserved ROM area (Note 2) (128 bytes) Zero page Special page RAM area RAM size (bytes) Address XXXX16 ROM size (bytes) Address YYYY16 Reserved ROM area (Note 2) Address ZZZZ16 SFR area (Note 1) Notes 1: This area is SFR in M38869FFA. This area is Reserved in M38869MFA/MCA/M8A. This area is not used in M38867M8A/E8A. 2: This area is usable in EPROM version and flash memory version. |
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