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7471 Datasheet(PDF) 10 Page - Renesas Technology Corp |
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7471 Datasheet(HTML) 10 Page - Renesas Technology Corp |
10 / 47 page 9 7470/7471 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER MITSUBISHI MICROCOMPUTERS MEMORY • Special Function Register (SFR) Area The special function register (SFR) area contains the registers relating to functions such as I/O ports and timers. • RAM RAM is used for data storage as well as a stack area. • ROM ROM is used for storing user programs as well as the interrupt vector area. • Interrupt Vector Area The interrupt vector area is for storing jump destination ad- dresses used at reset or when an interrupt is generated. • Zero Page Zero page addressing mode is useful because it enables access to this area with fewer instruction cycles. • Special Page Special page addressing mode is useful because it enables ac- cess to this area with fewer instruction cycles. Fig. 2 Memory map RAM (192 bytes) for M37470M8/E8 M37471M8/E8 SFR area Not used Interrupt vector area 000016 Zero page Special page RAM (128 bytes) for M37470M2 M37471M2 ROM (16K bytes) for M37470M8/E8 M37471M8/E8 ROM (8K bytes) for M37470M4/E8 M37471M4/E8 ROM (4K bytes) for M37470M2 M37471M2 RAM (192 bytes) for M37470M4/E4 M37470M8/E8 M37471M4/E4 M37471M8/E8 Not used 007F16 00BF16 00FF16 010016 01BF16 C00016 E00016 F00016 FF0016 FFEA16 FFFF16 |
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