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    參數(shù)資料
    型號: PIC16C57-10/P
    廠商: Microchip Technology
    文件頁數(shù): 120/194頁
    文件大小: 0K
    描述: IC MCU OTP 2KX12 28DIP
    產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
    標準包裝: 15
    系列: PIC® 16C
    核心處理器: PIC
    芯體尺寸: 8-位
    速度: 10MHz
    外圍設(shè)備: POR,WDT
    輸入/輸出數(shù): 20
    程序存儲器容量: 3KB(2K x 12)
    程序存儲器類型: OTP
    RAM 容量: 72 x 8
    電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
    振蕩器型: 外部
    工作溫度: 0°C ~ 70°C
    封裝/外殼: 28-DIP(0.600",15.24mm)
    包裝: 管件
    配用: XLT28XP-ND - SOCKET TRANSITION ICE 28DIP
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    2002 Microchip Technology Inc.
    Preliminary
    DS30453D-page 29
    PIC16C5X
    6.3
    STATUS Register
    This register contains the arithmetic status of the ALU,
    the RESET status and the page preselect bits for pro-
    gram memories larger than 512 words.
    The STATUS Register can be the destination for any
    instruction, as with 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 and
    MOVWF
    instructions be used to alter the STATUS Reg-
    ister because these instructions do not affect the Z, DC
    or C bits from the STATUS Register. For other instruc-
    tions which do affect STATUS Bits, see Section 10.0,
    Instruction Set Summary.
    REGISTER 6-1:
    STATUS REGISTER (ADDRESS: 03h)
    R/W-0
    R-1
    R/W-x
    PA2
    PA1
    PA0
    TO
    PD
    ZDC
    C
    bit 7
    bit 0
    bit 7:
    PA2: This bit unused at this time.
    Use of the PA2 bit as a general purpose read/write bit is not recommended, since this may affect upward
    compatibility with future products.
    bit 6-5:
    PA<1:0>: Program page preselect bits (PIC16C56/CR56)(PIC16C57/CR57)(PIC16C58/CR58)
    00
    = Page 0 (000h - 1FFh) - PIC16C56/CR56, PIC16C57/CR57, PIC16C58/CR58
    01
    = Page 1 (200h - 3FFh) - PIC16C56/CR56, PIC16C57/CR57, PIC16C58/CR58
    10
    = Page 2 (400h - 5FFh) - PIC16C57/CR57, PIC16C58/CR58
    11
    = Page 3 (600h - 7FFh) - PIC16C57/CR57, PIC16C58/CR58
    Each page is 512 words.
    Using the PA<1:0> bits as general purpose read/write bits in devices which do not use them for program
    page preselect is not recommended since this may affect upward compatibility with future products.
    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 (for ADDWF and SUBWF instructions)
    ADDWF
    1
    = A carry from the 4th low order bit of the result occurred
    0
    = A carry from the 4th low order bit of the result did not occur
    SUBWF
    1
    = A borrow from the 4th low order bit of the result did not occur
    0
    = A borrow from the 4th low order bit of the result occurred
    bit 0:
    C: Carry/borrow bit (for ADDWF, SUBWF and RRF, RLF instructions)
    ADDWF
    SUBWF
    RRF or RLF
    1
    = A carry occurred
    1
    = A borrow did not occur
    Loaded with LSb or MSb, respectively
    0
    = A carry did not occur
    0
    = A borrow occurred
    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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