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參數(shù)資料
| 型號： | 12F629 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Twinaxial Cable; Impedance:150ohm; Conductor Size AWG:22; No. Strands x Strand Size:19 x 34; Jacket Material:FEP; Leaded Process Compatible:Yes; Temperature Max:200 C; Voltage Nom.:300V; Features:Aluminium Foil/Polyester Tape RoHS Compliant: Yes |
| 中文描述： | 8引腳基于閃存的8位CMOS微控制器 |
| 文件頁數(shù)： | 13/132頁 |
| 文件大?。?/td> | 4925K |
| 代理商： | 12F629 |
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2003 Microchip Technology Inc.
DS41190C-page 11
PIC12F629/675
2.2.2.1
STATUS Register
The STATUS register, shown in Register 2-1, contains:
the arithmetic status of the ALU
the RESET status
the bank select bits for data memory (SRAM)
The STATUS register can be the destination for any
instruction, like any other register. If the STATUS
register is the destination for an instruction that affects
the Z, DC or C bits, then the write to these three bits is
disabled. These bits are set or cleared according to the
device logic. Furthermore, the TO and PD bits are not
writable. Therefore, the result of an instruction with the
STATUS register as destination may be different than
intended.
For example,
CLRF STATUS
will clear the upper three
bits and set the Z bit. This leaves the STATUS register
as
000u u1uu
(where
u
= unchanged).
It is recommended, therefore, that only
BCF, BSF,
SWAPF
and
MOVWF
instructions are used to alter the
STATUS register, because these instructions do not
affect any STATUS bits. For other instructions not
affecting any STATUS bits, see the “Instruction Set
Summary”.
REGISTER 2-1:
STATUS — STATUS REGISTER (ADDRESS: 03h OR 83h)
Note 1:
Bits IRP and RP1 (STATUS<7:6>) are not
used by the PIC12F629/675 and should
be maintained as clear. Use of these bits
is not recommended, since this may affect
upward compatibility with future products.
2:
The C and DC bits operate as a Borrow
and Digit Borrow out bit, respectively, in
subtraction. See the
SUBLW
and
SUBWF
instructions for examples.
Reserved
Reserved
R/W-0
R-1
R-1
R/W-x
R/W-x
R/W-x
IRP
RP1
RP0
TO
PD
Z
DC
C
bit 7
bit 0
bit 7
IRP:
This bit is reserved and should be maintained as ‘0’
bit 6
RP1:
This bit is reserved and should be maintained as ‘0’
bit 5
RP0:
Register Bank Select bit (used for direct addressing)
0
= Bank 0 (00h - 7Fh)
1
= Bank 1 (80h - FFh)
bit 4
TO:
Time-out bit
1
= After power-up,
CLRWDT
instruction, or
SLEEP
instruction
0
= A WDT time-out occurred
bit 3
PD
: Power-down bit
1
= After power-up or by the
CLRWDT
instruction
0
= By execution of the
SLEEP
instruction
bit 2
Z
: Zero bit
1
= The result of an arithmetic or logic operation is zero
0
= The result of an arithmetic or logic operation is not zero
bit 1
DC
: Digit carry/borrow bit (
ADDWF
,
ADDLW,SUBLW,SUBWF
instructions)
For borrow, the polarity is reversed.
1
= A carry-out from the 4th low order bit of the result occurred
0
= No carry-out from the 4th low order bit of the result
bit 0
C
: Carry/borrow bit (
ADDWF
,
ADDLW, SUBLW, SUBWF
instructions)
1
= A carry-out from the Most Significant bit of the result occurred
0
= No carry-out from the Most Significant bit of the result occurred
Note:
For borrow the polarity is reversed. A subtraction is executed by adding the two’s
complement of the second operand. For rotate (
RRF
,
RLF
) instructions, this bit is
loaded with either the high or low order bit of the source register
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR
’1’ = Bit is set
’0’ = Bit is cleared
x = Bit is unknown
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| 12F80 | 功能描述:DIODE STD REC 800V 12A DO-4 RoHS:是 類別:分離式半導體產(chǎn)品 >> 單二極管/整流器 系列:- 標準包裝:100 系列:- 二極管類型:標準 電壓 - (Vr)（最大）:50V 電流 - 平均整流 (Io):6A 電壓 - 在 If 時為正向 (Vf)（最大）:1.4V @ 6A 速度:快速恢復 = 200mA（Io） 反向恢復時間(trr):300ns 電流 - 在 Vr 時反向漏電:15µA @ 50V 電容@ Vr, F:- 安裝類型:底座，接線柱安裝 封裝/外殼:DO-203AA，DO-4，接線柱 供應商設備封裝:DO-203AA 包裝:散裝 其它名稱:*1N3879 |
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