PIC16F1938 Datasheet, PDF (48/452 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers

PIC16(L)F1938/9
TABLE 3-10: SPECIAL FUNCTION REGISTER SUMMARY (CONTINUED)
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on all
other
Resets
Banks 16-30
x00h/
x80h⁽²⁾
INDF0
Addressing this location uses contents of FSR0H/FSR0L to Address Data Memory
(not a physical register)
xxxx xxxx xxxx xxxx
x00h/
x81h⁽²⁾
INDF1
Addressing this location uses contents of FSR1H/FSR1L to Address Data Memory
(not a physical register)
xxxx xxxx xxxx xxxx
x02h/
x82h⁽²⁾
PCL
Program Counter (PC) Least Significant Byte
0000 0000 0000 0000
x03h/
x83h⁽²⁾
STATUS
—
—
—
TO
PD
Z
DC
C
---1 1000 ---q quuu
x04h/
x84h⁽²⁾
FSR0L
Indirect Data Memory Address 0 Low Pointer
0000 0000 uuuu uuuu
x05h/
x85h⁽²⁾
FSR0H
Indirect Data Memory Address 0 High Pointer
0000 0000 0000 0000
x06h/
x86h⁽²⁾
FSR1L
Indirect Data Memory Address 1 Low Pointer
0000 0000 uuuu uuuu
x07h/
x87h⁽²⁾
FSR1H
Indirect Data Memory Address 1 High Pointer
0000 0000 0000 0000
x08h/
x88h⁽²⁾
BSR
—
—
—
BSR<4:0>
---0 0000 ---0 0000
x09h/
x89h⁽²⁾
WREG
Working Register
0000 0000 uuuu uuuu
x0Ah/
PCLATH
x8Ah^(1),(2)
—
Write Buffer for the upper 7 bits of the Program Counter
-000 0000 -000 0000
x0Bh/
x8Bh⁽²⁾
INTCON
GIE
PEIE
TMR0IE
INTE
IOCIE
TMR0IF
INTF
IOCIF 0000 0000 0000 0000
x0Ch/
—
x8Ch
—
x1Fh/
x9Fh
Unimplemented
—
—
Legend:
Note 1:
2:
3:
4:
x = unknown, u = unchanged, q = value depends on condition, - = unimplemented, read as ‘0’, r = reserved.
Shaded locations are unimplemented, read as ‘0’.
The upper byte of the program counter is not directly accessible. PCLATH is a holding register for the PC<14:8>, whose contents are transferred
to the upper byte of the program counter.
These registers can be addressed from any bank.
These registers/bits are not implemented on PIC16(L)F1938 devices, read as ‘0’.
Unimplemented, read as ‘1’.
DS41574A-page 48
Preliminary
 2011 Microchip Technology Inc.