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M37532RSS Datasheet(PDF) 9 Page - Mitsubishi Electric Semiconductor |
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M37532RSS Datasheet(HTML) 9 Page - Mitsubishi Electric Semiconductor |
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9 / 50 page  SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 7532 Group MITSUBISHI MICROCOMPUTERS 9 Memory Special function register (SFR) area The SFR area in the zero page contains control registers such as I/O ports and timers. RAM RAM is used for data storage and for a 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 a user area for storing programs. Interrupt vector area The interrupt vector area contains reset and interrupt vectors. Zero page The 256 bytes from addresses 000016 to 00FF16 are called the zero page area. The internal RAM and the special function registers (SFR) are allocated to this area. The zero page addressing mode can be used to specify memory and register addresses in the zero page area. Access to this area with only 2 bytes is possible in the zero page addressing mode. Special page The 256 bytes from addresses FF0016 to FFFF16 are called the spe- cial page area. The special page addressing mode can be used to specify memory addresses in the special page area. Access to this area with only 2 bytes is possible in the special page addressing mode. Fig. 9 Memory map diagram 010016 000016 004016 044016 FF0016 FFEC16 FFFE16 FFFF16 256 384 XXXX16 013F16 01BF16 8192 16384 E00016 C00016 E08016 C08016 YYYY16 ZZZZ16 RAM ROM Reserved area SFR area Not used Interrupt vector area ROM area Reserved ROM area (128 bytes) Zero page Special page RAM area RAM capacity (bytes) address XXXX16 ROM capacity (bytes) address YYYY16 Reserved ROM area address ZZZZ16 |
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