Microchip Technology DM183021 Data Sheet
2010 Microchip Technology Inc.
DS39616D-page 69
PIC18F2331/2431/4331/4431
6.5.4
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
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
and
.
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
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.
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 6-1:
SPECIAL FUNCTION REGISTER MAP FOR PIC18F2331/2431/4331/4431 DEVICES
Address
Name
Address
Name
Address
Name
Address
Name
Address
Name
FFFh
TOSU
FDFh
INDF2
(1)
FBFh
CCPR1H
F9Fh
IPR1
F7Fh
PTCON0
FFEh
TOSH
FDEh POSTINC2
(1)
FBEh
CCPR1L
F9Eh
PIR1
F7Eh
PTCON1
FFDh
TOSL
FDDh POSTDEC2
(1)
FBDh CCP1CON
F9Dh
PIE1
F7Dh
PTMRL
FFCh
STKPTR
FDCh
PREINC2
(1)
FBCh
CCPR2H
F9Ch
—
(2)
F7Ch
PTMRH
FFBh
PCLATU
FDBh
PLUSW2
(1)
FBBh
CCPR2L
F9Bh OSCTUNE
F7Bh
PTPERL
FFAh
PCLATH
FDAh
FSR2H
FBAh CCP2CON
F9Ah
ADCON3
F7Ah
PTPERH
FF9h
PCL
FD9h
FSR2L
FB9h
ANSEL1
F99h
ADCHS
F79h
PDC0L
FF8h
TBLPTRU
FD8h
STATUS
FB8h
ANSEL0
F98h
—
(2)
F78h
PDC0H
FF7h
TBLPTRH
FD7h
TMR0H
FB7h
T5CON
F97h
—
(2)
F77h
PDC1L
FF6h
TBLPTRL
FD6h
TMR0L
FB6h
QEICON
F96h
TRISE
(3)
F76h
PDC1H
FF5h
TABLAT
FD5h
T0CON
FB5h
—
(2)
F95h
TRISD
(3)
F75h
PDC2L
FF4h
PRODH
FD4h
—
(2)
FB4h
—
(2)
F94h
TRISC
F74h
PDC2H
FF3h
PRODL
FD3h
OSCCON
FB3h
—
(2)
F93h
TRISB
F73h
PDC3L
(3)
FF2h
INTCON
FD2h
LVDCON
FB2h
—
(2)
F92h
TRISA
F72h
PDC3H
(3)
FF1h
INTCON2
FD1h
WDTCON
FB1h
—
(2)
F91h
PR5H
F71h
SEVTCMPL
FF0h
INTCON3
FD0h
RCON
FB0h
SPBRGH
F90h
PR5L
F70h
SEVTCMPH
FEFh
INDF0
(1)
FCFh
TMR1H
FAFh
SPBRG
F8Fh
—
(2)
F6Fh
PWMCON0
FEEh POSTINC0
(1)
FCEh
TMR1L
FAEh
RCREG
F8Eh
—
(2)
F6Eh
PWMCON1
FEDh POSTDEC0
(1)
FCDh
T1CON
FADh
TXREG
F8Dh
LATE
(3)
F6Dh
DTCON
FECh
PREINC0
(1)
FCCh
TMR2
FACh
TXSTA
F8Ch
LATD
(3)
F6Ch
FLTCONFIG
FEBh
PLUSW0
(1)
FCBh
PR2
FABh
RCSTA
F8Bh
LATC
F6Bh
OVDCOND
FEAh
FSR0H
FCAh
T2CON
FAAh BAUDCON
F8Ah
LATB
F6Ah
OVDCONS
FE9h
FSR0L
FC9h
SSPBUF
FA9h
EEADR
F89h
LATA
F69h
CAP1BUFH
FE8h
WREG
FC8h
SSPADD
FA8h
EEDATA
F88h
TMR5H
F68h
CAP1BUFL
FE7h
INDF1
(1)
FC7h
SSPSTAT
FA7h
EECON2
F87h
TMR5L
F67h
CAP2BUFH
FE6h POSTINC1
(1)
FC6h
SSPCON
FA6h
EECON1
F86h
—
(2)
F66h
CAP2BUFL
FE5h POSTDEC1
(1)
FC5h
—
(2)
FA5h
IPR3
F85h
—
(2)
F65h
CAP3BUFH
FE4h
PREINC1
(1)
FC4h
ADRESH
FA4h
PIR3
F84h
PORTE
F64h
CAP3BUFL
FE3h
PLUSW1
(1)
FC3h
ADRESL
FA3h
PIE3
F83h PORTD
(3)
F63h
CAP1CON
FE2h
FSR1H
FC2h
ADCON0
FA2h
IPR2
F82h
PORTC
F62h
CAP2CON
FE1h
FSR1L
FC1h
ADCON1
FA1h
PIR2
F81h
PORTB
F61h
CAP3CON
FE0h
BSR
FC0h
ADCON2
FA0h
PIE2
F80h
PORTA
F60h
DFLTCON
Note 1:
This is not a physical register.
2:
Unimplemented registers are read as ‘0’.
3:
This register is not available on 28-pin devices.