PIC16C925/926
TABLE 2-1: SPECIAL FUNCTION REGISTER SUMMARY (CONTINUED)
Address Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bank 3
180h
INDF
181h
OPTION
182h
PCL
183h
STATUS
184h
FSR
185h
—
186h
TRISB
187h
TRISF
188h
TRISG
189h
—
18Ah PCLATH
18Bh INTCON
18Ch PMDATA
Addressing this location uses contents of FSR to address data memory (not a physical register)
RBPU INTEDG T0CS
T0SE
PSA
PS2
PS1
PS0
Program Counter’s (PC) Least Significant Byte
IRP
RP1
RP0
TO
PD
Z
DC
C
Indirect Data Memory Address Pointer
Unimplemented
PORTB Data Direction Register
PORTF Data Direction Register
PORTG Data Direction Register
Unimplemented
—
—
—
Write Buffer for the upper 5 bits of the PC
GIE
PEIE
TMR0IE
INTE
RBIE
TMR0IF
INTF
RBIF
Data Register Low Byte
18Dh PMADR Address Register Low Byte
18Eh PMDATH
—
—
Data Register High Byte
18Fh
PMADRH
—
—
—
Address Register High Byte
190h
—
Unimplemented
191h
—
Unimplemented
192h
—
Unimplemented
193h
—
Unimplemented
194h
—
Unimplemented
195h
—
Unimplemented
196h
—
Unimplemented
197h
—
Unimplemented
198h
—
Unimplemented
199h
—
Unimplemented
19Ah
—
Unimplemented
19Bh
—
Unimplemented
19Ch
—
Unimplemented
19Dh
—
Unimplemented
19Eh
—
Unimplemented
19Fh
—
Unimplemented
Legend: x = unknown, u = unchanged, q = value depends on condition, - = unimplemented, read as '0'.
Shaded locations are unimplemented, read as ‘0’.
Note 1: These pixels do not display, but can be used as general purpose RAM.
Value on
Power-on
Reset
Details on
page
0000 0000
26
1111 1111
20
0000 0000
25
0001 1xxx
19
xxxx xxxx
26
—
—
1111 1111
31
1111 1111
37
1111 1111
38
—
—
---0 0000
25
0000 000x
21
xxxx xxxx
27
xxxx xxxx
27
xxxx xxxx
27
xxxx xxxx
27
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
DS39544A-page 18
Preliminary
2001 Microchip Technology Inc.