Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SOIC 28 8-Bit 40 MHz I/O number 25

PIC18F2220/2320/4220/4320

5.9.2 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. A list of these registers is

given in Table 5-1 and Table 5-2.

The SFRs can be classified into two sets: those asso-

ciated with the “core” function and those related to the

peripheral functions. Those registers related to the

“core” are described in this section, while those related

to the operation of the peripheral features are

described in the section of that peripheral feature.

The SFRs are typically distributed among the

peripherals whose functions they control.

The unused SFR locations will be unimplemented and

read as ‘0’s.

TABLE 5-1: SPECIAL FUNCTION REGISTER MAP FOR PIC18F2X20/4X20 DEVICES

Address Name Address Name Address Name Address Name

FFFh TOSU FDFh INDF2

(2)

FBFh CCPR1H F9Fh IPR1

FFEh TOSH FDEh POSTINC2

(2)

FBEh CCPR1L F9Eh PIR1

FFDh TOSL FDDh POSTDEC2

(2)

FBDh CCP1CON F9Dh PIE1

FFCh STKPTR FDCh PREINC2

(2)

FBCh CCPR2H F9Ch —

FFBh PCLATU FDBh PLUSW2

(2)

FBBh CCPR2L F9Bh OSCTUNE

FFAh PCLATH FDAh FSR2H FBAh CCP2CON F9Ah OSCTUN2

FF9h PCL FD9h FSR2L FB9h

—F99h—

FF8h TBLPTRU FD8h STATUS FB8h —F98h—

FF7h TBLPTRH FD7h TMR0H FB7h PWM1CON

(1)

F97h —

FF6h TBLPTRL FD6h TMR0L FB6h ECCPAS

(1)

F96h TRISE

(1)

FF5h TABLAT FD5h T0CON FB5h CVRCON F95h TRISD

(1)

FF4h PRODH FD4h — FB4h CMCON F94h TRISC

FF3h PRODL FD3h OSCCON FB3h TMR3H F93h TRISB

FF2h INTCON FD2h LVDCON FB2h TMR3L F92h TRISA

FF1h INTCON2 FD1h WDTCON FB1h T3CON F91h

—

FF0h INTCON3 FD0h RCON FB0h

—F90h—

FEFh INDF0

(2)

FCFh TMR1H FAFh SPBRG F8Fh —

FEEh POSTINC0

(2)

FCEh TMR1L FAEh RCREG F8Eh —

FEDh POSTDEC0

(2)

FCDh T1CON FADh TXREG F8Dh LATE

(1)

FECh PREINC0

(2)

FCCh TMR2 FACh TXSTA F8Ch LATD

(1)

FEBh PLUSW0

(2)

FCBh PR2 FABh RCSTA F8Bh LATC

FEAh FSR0H FCAh T2CON FAAh

—F8AhLATB

FE9h FSR0L FC9h SSPBUF FA9h EEADR F89h LATA

FE8h WREG FC8h SSPADD FA8h EEDATA F88h

—

FE7h INDF1

(2)

FC7h SSPSTAT FA7h EECON2 F87h —

FE6h POSTINC1

(2)

FC6h SSPCON1 FA6h EECON1 F86h —

FE5h POSTDEC1

(2)

FC5h SSPCON2 FA5h —F85h—

FE4h PREINC1

(2)

FC4h ADRESH FA4h —F84hPORTE

(1)

FE3h PLUSW1

(2)

FC3h ADRESL FA3h —F83hPORTD

(1)

FE2h FSR1H FC2h ADCON0 FA2h IPR2 F82h PORTC

FE1h FSR1L FC1h ADCON1 FA1h PIR2 F81h PORTB

FE0h BSR FC0h ADCON2 FA0h PIE2 F80h PORTA

Legend: — = Unimplemented registers, read as ‘0’.

Note 1: This register is not available on PIC18F2X20 devices.

2: This is not a physical register.