参数资料
型号: PIC16LC556-04/SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PDSO20
封装: 0.209 INCH, PLASTIC, SSOP-20
文件页数: 11/104页
文件大小: 697K
代理商: PIC16LC556-04/SS
PIC16C55X
DS40143A-page 14
Preliminary
1996 Microchip Technology Inc.
4.2.2
SPECIAL FUNCTION REGISTERS
The special function registers are registers used by the
CPU and Peripheral functions for controlling the
desired operation of the device (Table 4-1). These
registers are static RAM.
The special function registers can be classied into two
sets (core and peripheral). The special function regis-
ters associated with the “core” functions are described
in this section. Those related to the operation of the
peripheral features are described in the section of that
peripheral feature.
TABLE 4-1:
SPECIAL REGISTERS FOR THE PIC16C55X
Address Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR Reset
Value on
all other
resets(1)
Bank 0
00h
INDF
Addressing this location uses contents of FSR to address data memory (not a physical
register)
xxxx xxxx
01h
TMR0
Timer0 Module’s Register
xxxx xxxx
uuuu uuuu
02h
PCL
Program Counter's (PC) Least Signicant Byte
0000 0000
03h
STATUS
IRP(2)
RP1(2)
RP0
TO
PD
ZDC
C
0001 1xxx
000q quuu
04h
FSR
Indirect data memory address pointer
xxxx xxxx
uuuu uuuu
05h
PORTA
RA4
RA3
RA2
RA1
RA0
---x xxxx
---u uuuu
06h
PORTB
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0
xxxx xxxx
uuuu uuuu
07h
Unimplemented
08h
Unimplemented
09h
Unimplemented
0Ah
PCLATH
Write buffer for upper 5 bits of program counter
---0 0000
0Bh
INTCON
GIE
(3)
T0IE
INTE
RBIE
T0IF
INTF
RBIF
0000 000x
0Ch
Unimplemented
0Dh-1Eh
Unimplemented
1Fh
Unimplemented
Bank 1
80h
INDF
Addressing this location uses contents of FSR to address data memory (not a physical
register)
xxxx xxxx
81h
OPTION
RBPU
INTEDG
T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111
82h
PCL
Program Counter's (PC) Least Signicant Byte
0000 0000
83h
STATUS
RP0
TO
PD
ZDC
C
0001 1xxx
000q quuu
84h
FSR
Indirect data memory address pointer
xxxx xxxx
uuuu uuuu
85h
TRISA
TRISA4
TRISA3
TRISA2
TRISA1
TRISA0
---1 1111
86h
TRISB
TRISB7
TRISB6
TRISB5
TRISB4
TRISB3
TRISB2
TRISB1
TRISB0
1111 1111
87h
Unimplemented
88h
Unimplemented
89h
Unimplemented
8Ah
PCLATH
Write buffer for upper 5 bits of program counter
---0 0000
8Bh
INTCON
GIE
(3)
T0IE
INTE
RBIE
T0IF
INTF
RBIF
0000 000x
8Ch
Unimplemented
8Dh
Unimplemented
8Eh
PCON
POR
---- --0-
---- --u-
8Fh-9Eh
Unimplemented
9Fh
Unimplemented
Legend: = Unimplemented locations read as ‘0’, u = unchanged, x = unknown, q = value depends on condition,
shaded = unimplemented
Note 1: Other (non power-up) resets include MCLR reset and Watchdog Timer reset during normal operation.
Note 2: IRP & RPI bits are reserved, always maintain these bits clear.
Note 3: Bit 6 of INTCON register is reserved for future use. Always maintain this bit as clear.
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