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SFR Page Reference B - 1
1. Overview 1
1.1 Applications.................................................................................................1
1.2 Performance Overview................................................................................2
1.3 Block Diagram.............................................................................................4
1.4 Product Information.....................................................................................5
1.5 Pin Assignments..........................................................................................7
1.6 Pin Description............................................................................................8
2. Central Processing Unit (CPU) 10
2.1 Data Registers (R0, R1, R2 and R3).........................................................11
2.2 Address Registers (A0 and A1).................................................................11
2.3 Frame Base Register (FB) ........................................................................11
2.4 Interrupt Table Register (INTB).................................................................11
2.5 Program Counter (PC) ..............................................................................11
2.6 User Stack Pointer (USP) and Interrupt Stack Pointer (ISP).....................11
2.7 Static Base Register (SB)..........................................................................11
2.8 Flag Register (FLG)...................................................................................11
2.8.1 Carry Flag (C).....................................................................................11
2.8.2 Debug Flag (D)...................................................................................11
2.8.3 Zero Flag (Z).......................................................................................11
2.8.4 Sign Flag (S).......................................................................................11
2.8.5 Register Bank Select Flag (B)............................................................11
2.8.6 Overflow Flag (O)...............................................................................11
2.8.7 Interrupt Enable Flag (I Flag)..............................................................12
2.8.8 Stack Pointer Select Flag (U Flag).....................................................12
2.8.9 Processor Interrupt Priority Level (IPL) ..............................................12
2.8.10 Reserved Bit.......................................................................................12
3. Memory 13
3.1 R8C/14 Group...........................................................................................13
3.2 R8C/15 Group...........................................................................................14
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