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PIC18F4450-E/ML Datasheet(PDF) 64 Page - Microchip Technology |
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PIC18F4450-E/ML Datasheet(HTML) 64 Page - Microchip Technology |
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64 / 320 page  PIC18F2450/4450 DS39760A-page 62 Advance Information © 2006 Microchip Technology Inc. 5.3.5 SPECIAL FUNCTION REGISTERS The Special Function Registers (SFRs) are registers used by the CPU and peripheral modules for controlling the desired operation of the device. These registers are implemented as static RAM in the data memory space. SFRs start at the top of data memory and extend downward to occupy the top segment of Bank 15, from F60h to FFFh. A list of these registers is given in Table 5-1 and Table 5-2. The SFRs can be classified into two sets: those associated with the “core” device functionality (ALU, Resets and interrupts) and those related to the peripheral functions. The Reset and interrupt registers are described in their respective chapters, while the ALU’s STATUS register is described later in this section. Registers related to the operation of a peripheral feature are described in the chapter for that peripheral. The SFRs are typically distributed among the peripherals whose functions they control. Unused SFR locations are unimplemented and read as ‘0’s. TABLE 5-1: SPECIAL FUNCTION REGISTER MAP FOR PIC18F2450/4450 DEVICES Address Name Address Name Address Name Address Name Address Name FFFh TOSU FDFh INDF2(1) FBFh CCPR1H F9Fh IPR1 F7Fh UEP15 FFEh TOSH FDEh POSTINC2(1) FBEh CCPR1L F9Eh PIR1 F7Eh UEP14 FFDh TOSL FDDh POSTDEC2(1) FBDh CCP1CON F9Dh PIE1 F7Dh UEP13 FFCh STKPTR FDCh PREINC2(1) FBCh —(2) F9Ch —(2) F7Ch UEP12 FFBh PCLATU FDBh PLUSW2(1) FBBh —(2) F9Bh —(2) F7Bh UEP11 FFAh PCLATH FDAh FSR2H FBAh —(2) F9Ah —(2) F7Ah UEP10 FF9h PCL FD9h FSR2L FB9h —(2) F99h —(2) F79h UEP9 FF8h TBLPTRU FD8h STATUS FB8h BAUDCON F98h —(2) F78h UEP8 FF7h TBLPTRH FD7h TMR0H FB7h —(2) F97h —(2) F77h UEP7 FF6h TBLPTRL FD6h TMR0L FB6h —(2) F96h TRISE(3) F76h UEP6 FF5h TABLAT FD5h T0CON FB5h —(2) F95h TRISD(3) F75h UEP5 FF4h PRODH FD4h —(2) FB4h —(2) F94h TRISC F74h UEP4 FF3h PRODL FD3h OSCCON FB3h —(2) F93h TRISB F73h UEP3 FF2h INTCON FD2h HLVDCON FB2h —(2) F92h TRISA F72h UEP2 FF1h INTCON2 FD1h WDTCON FB1h —(2) F91h —(2) F71h UEP1 FF0h INTCON3 FD0h RCON FB0h SPBRGH F90h —(2) F70h UEP0 FEFh INDF0(1) FCFh TMR1H FAFh SPBRG F8Fh —(2) F6Fh UCFG FEEh POSTINC0(1) FCEh TMR1L FAEh RCREG F8Eh —(2) F6Eh UADDR FEDh POSTDEC0(1) FCDh T1CON FADh TXREG F8Dh LATE(3) F6Dh UCON FECh PREINC0(1) FCCh TMR2 FACh TXSTA F8Ch LATD(3) F6Ch USTAT FEBh PLUSW0(1) FCBh PR2 FABh RCSTA F8Bh LATC F6Bh UEIE FEAh FSR0H FCAh T2CON FAAh —(2) F8Ah LATB F6Ah UEIR FE9h FSR0L FC9h —(2) FA9h —(2) F89h LATA F69h UIE FE8h WREG FC8h —(2) FA8h —(2) F88h —(2) F68h UIR FE7h INDF1(1) FC7h —(2) FA7h EECON2(1) F87h —(2) F67h UFRMH FE6h POSTINC1(1) FC6h —(2) FA6h EECON1 F86h —(2) F66h UFRML FE5h POSTDEC1(1) FC5h —(2) FA5h —(2) F85h —(2) F65h —(2) FE4h PREINC1(1) FC4h ADRESH FA4h —(2) F84h PORTE F64h —(2) FE3h PLUSW1(1) FC3h ADRESL FA3h —(2) F83h PORTD(3) F63h —(2) FE2h FSR1H FC2h ADCON0 FA2h IPR2 F82h PORTC F62h —(2) FE1h FSR1L FC1h ADCON1 FA1h PIR2 F81h PORTB F61h —(2) FE0h BSR FC0h ADCON2 FA0h PIE2 F80h PORTA F60h —(2) Note 1: Not a physical register. 2: Unimplemented registers are read as ‘0’. 3: These registers are implemented only on 40/44-pin devices. |
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