Datasheet
© 2009 Microchip Technology Inc. DS39775C-page 81
PIC18F87J50 FAMILY
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. SFRs start at the top of
data memory (FFFh) and extend downward to occupy
more than the top half of Bank 15 (F40h to FFFh). A list
of these registers is given inTable 5-3, Table 5-4 and
Table 5-5.
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 the
peripheral features 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
Note: Addresses, F40h through F5Fh, are not
part of the Access Bank, therefore specify-
ing a BSR should be used to access these
registers.
TABLE 5-3: SPECIAL FUNCTION REGISTER MAP FOR PIC18F87J50 FAMILY DEVICES
Address Name Address Name Address Name Address Name Address Name Address Name
FFFh TOSU FDFh INDF2
(1)
FBFh ECCP1AS F9Fh IPR1 F7Fh SPBRGH1 F5Fh UCFG
FFEh TOSH FDEh POSTINC2
(1)
FBEh ECCP1DEL F9Eh PIR1 F7Eh BAUDCON1 F5Eh UADDR
FFDh TOSL FDDh POSTDEC2
(1)
FBDh CCPR1H F9Dh PIE1 F7Dh SPBRGH2 F5Dh UEIE
FFCh STKPTR FDCh PREINC2
(1)
FBCh CCPR1L F9Ch RCSTA2 F7Ch BAUDCON2 F5Ch UIE
FFBh PCLATU FDBh PLUSW2
(1)
FBBh CCP1CON F9Bh OSCTUNE F7Bh TMR3H F5Bh UEP15
FFAh PCLATH FDAh FSR2H FBAh ECCP2AS F9Ah TRISJ
(2)
F7Ah TMR3L F5Ah UEP14
FF9h PCL FD9h FSR2L FB9h ECCP2DEL F99h TRISH
(2)
F79h T3CON F59h UEP13
FF8h TBLPTRU FD8h STATUS FB8h CCPR2H F98h TRISG F78h TMR4 F58h UEP12
FF7h TBLPTRH FD7h TMR0H FB7h CCPR2L F97h TRISF F77h PR4
(3)
F57h UEP11
FF6h TBLPTRL FD6h TMR0L FB6h CCP2CON F96h TRISE F76h T4CON F56h UEP10
FF5h TABLAT FD5h T0CON FB5h ECCP3AS F95h TRISD F75h CCPR4H F55h UEP9
FF4h PRODH FD4h
FB4h ECCP3DEL F94h TRISC F74h CCPR4L F54h UEP8
FF3h PRODL FD3h OSCCON
(3)
FB3h CCPR3H F93h TRISB F73h CCP4CON F53h UEP7
FF2h INTCON FD2h CM1CON FB2h CCPR3L F92h TRISA F72h CCPR5H F52h UEP6
FF1h INTCON2 FD1h CM2CON FB1h CCP3CON F91h LATJ
(2)
F71h CCPR5L F51h UEP5
FF0h INTCON3 FD0h RCON FB0h SPBRG1 F90h LATH
(2)
F70h CCP5CON F50h UEP4
FEFh INDF0
(1)
FCFh TMR1H
(3)
FAFh RCREG1 F8Fh LATG F6Fh SSP2BUF F4Fh UEP3
FEEh POSTINC0
(1)
FCEh TMR1L
(3)
FAEh TXREG1 F8Eh LATF F6Eh SSP2ADD F4Eh UEP2
FEDh POSTDEC0
(1)
FCDh T1CON
(3)
FADh TXSTA1 F8Dh LATE F6Dh SSP2STAT F4Dh UEP1
FECh PREINC0
(1)
FCCh TMR2
(3)
FACh RCSTA1 F8Ch LATD F6Ch SSP2CON1 F4Ch UEP0
FEBh PLUSW0
(1)
FCBh PR2
(3)
FABh SPBRG2 F8Bh LATC F6Bh SSP2CON2 F4Bh PMCONH
FEAh FSR0H FCAh T2CON FAAh RCREG2 F8Ah LATB F6Ah CMSTAT F4Ah PMCONL
FE9h FSR0L FC9h SSP1BUF FA9h TXREG2 F89h LATA F69h PMADDRH
(4)
F49h PMMODEH
FE8h WREG FC8h SSP1ADD FA8h TXSTA2 F88h PORTJ
(2)
F68h PMADDRL
(4)
F48h PMMODEL
FE7h INDF1
(1)
FC7h SSP1STAT FA7h EECON2 F87h PORTH
(2)
F67h PMDIN1H F47h PMDOUT2H
FE6h POSTINC1
(1)
FC6h SSP1CON1 FA6h EECON1 F86h PORTG F66h PMDIN1L F46h PMDOUT2L
FE5h POSTDEC1
(1)
FC5h SSP1CON2 FA5h IPR3 F85h PORTF F65h UCON F45h PMDIN2H
FE4h PREINC1
(1)
FC4h ADRESH FA4h PIR3 F84h PORTE F64h USTAT F44h PMDIN2L
FE3h PLUSW1
(1)
FC3h ADRESL FA3h PIE3 F83h PORTD F63h UEIR F43h PMEH
FE2h FSR1H FC2h ADCON0
(3)
FA2h IPR2 F82h PORTC F62h UIR F42h PMEL
FE1h FSR1L FC1h ADCON1
(3)
FA1h PIR2 F81h PORTB F61h UFRMH F41h PMSTATH
FE0h BSR FC0h WDTCON FA0h PIE2 F80h PORTA F60h UFRML F40h PMSTATL
Note 1: This is not a physical register.
2: This register is not available on 64-pin devices.
3: This register shares the same address with another register (see Table 5-4 for alternate register).
4: PMADDRH and PMDOUTH share the same address and PMADDRL and PMDOUTL share the same address. PMADDRx is used in Master
modes and PMDOUTx is used in Slave modes.