參數資料
型號： HCS405
廠商： Microchip Technology Inc.
英文描述： Code Hopping Encoder(KeeLoq 碼編碼器)
中文描述： 跳碼編碼器（而Keeloq碼編碼器）
文件頁數： 21/170頁
文件大?。?/td> 4191K
代理商： HCS405
2003 Microchip Technology Inc.
Preliminary
DS40300C-page 19
PIC16F62X
3.2.2.1
STATUS Register
The STATUS register, shown in Register 3-1, contains
the arithmetic status of the ALU, the RESET status and
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
000uu1uu
(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 bit. For other instructions, not
affecting any STATUS bits, see the “Instruction Set
Summary”.
REGISTER 3-1:
STATUS REGISTER (ADDRESS: 03h, 83h, 103h, 183h)
Note 1:
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.
R/W-0
R/W-0
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
: Register Bank Select bit (used for indirect addressing)
1
= Bank 2, 3 (100h - 1FFh)
0
= Bank 0, 1 (00h - FFh)
bit 6-5
RP1:RP0
: Register Bank Select bits (used for direct addressing)
00
= Bank 0 (00h - 7Fh)
01
= Bank 1 (80h - FFh)
10
= Bank 2 (100h - 17Fh)
11
= Bank 3 (180h - 1FFh)
bit 4
TO
: Timeout bit
1
= After power-up,
CLRWDT
instruction, or
SLEEP
instruction
0
= A WDT timeout 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 1:
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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相關代理商/技術參數
參數描述
HCS410 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ? Code Hopping Encoder and Transponder 2-bit CRC, 2-bit queue
HCS410/P 功能描述:編碼器、解碼器、復用器和解復用器 w/ Transponder RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
HCS410/SN 功能描述:編碼器、解碼器、復用器和解復用器 w/ Transponder RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
HCS410/ST 功能描述:編碼器、解碼器、復用器和解復用器 w/ Transponder RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
HCS410/WM 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HCS410WM Datasheet
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