参数资料
型号: PIC16C621-20/SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 20 MHz, RISC MICROCONTROLLER, PDSO20
封装: 0.209 INCH, PLASTIC, MO-150, SSOP-20
文件页数: 31/121页
文件大小: 1202K
代理商: PIC16C621-20/SS
1999 Microchip Technology Inc.
DS30235H-page 17
PIC16C62X
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 classified into
two sets (core and peripheral). The Special Function
Registers 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 PIC16C62X
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 Significant 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 0000
---u 0000
06h
PORTB
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0
xxxx xxxx
uuuu uuuu
07h-09h
Unimplemented
0Ah
PCLATH
Write buffer for upper 5 bits of program counter
---0 0000
0Bh
INTCON
GIE
PEIE
T0IE
INTE
RBIE
T0IF
INTF
RBIF
0000 000x
0000 000u
0Ch
PIR1
—CMIF
-0-- ----
0Dh-1Eh
Unimplemented
1Fh
CMCON
C2OUT
C1OUT
CIS
CM2
CM1
CM0
00-- 0000
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 Significant Byte
0000 0000
83h
STATUS
IRP(2)
RP1(2)
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-89h
Unimplemented
8Ah
PCLATH
Write buffer for upper 5 bits of program counter
---0 0000
8Bh
INTCON
GIE
PEIE
T0IE
INTE
RBIE
T0IF
INTF
RBIF
0000 000x
0000 000u
8Ch
PIE1
—CMIE
-0-- ----
8Dh
Unimplemented
8Eh
PCON
—POR
BOR
---- --0x
---- --uq
8Fh-9Eh
Unimplemented
9Fh
VRCON
VREN
VROE
VRR
VR3
VR2
VR1
VR0
000- 0000
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, Brown-out Reset and Watchdog Timer Reset during
normal operation.
Note 2: IRP & RP1 bits are reserved; always maintain these bits clear.
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