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  • 參數資料
    型號: ADUC843BCPZ8-3
    廠商: Analog Devices Inc
    文件頁數: 55/88頁
    文件大?。?/td> 0K
    描述: IC MCU FLASH 12BIT ADC 56LFCSP
    標準包裝: 1
    系列: MicroConverter® ADuC8xx
    核心處理器: 8052
    芯體尺寸: 8-位
    速度: 8.38MHz
    連通性: I²C,SPI,UART/USART
    外圍設備: DMA,PSM,PWM,溫度傳感器,WDT
    輸入/輸出數: 32
    程序存儲器容量: 8KB(8K x 8)
    程序存儲器類型: 閃存
    RAM 容量: 2.25K x 8
    電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
    數據轉換器: A/D 8x12b
    振蕩器型: 內部
    工作溫度: -40°C ~ 85°C
    封裝/外殼: 56-VFQFN 裸露焊盤,CSP
    包裝: 托盤
    ADuC841/ADuC842/ADuC843
    Rev. 0 | Page 59 of 88
    MOSI is shared with P3.3 and, as such, has the same
    configuration as the one shown in Figure 61.
    MCO
    I2C M
    Q3
    Q4
    SCLOCK
    PIN
    Q2
    Q1
    (OFF)
    DVDD
    50ns GLITCH
    REJECTION FILTER
    SPE = 0 (I2C ENABLE)
    HARDWARE I2C
    (SLAVE ONLY)
    SFR
    BITS
    03260-0-062
    Figure 63. SCLOCK Pin I/O Functional Equivalent in I2C Mode
    Q3
    Q1
    Q2 (OFF)
    DVDD
    Q4 (OFF)
    SDATA/
    MOSI
    PIN
    SPE = 1 (SPI ENABLE)
    HARDWARE SPI
    (MASTER/SLAVE)
    03260-0-097
    Figure 64. SDATA/MOSI Pin I/O Functional Equivalent in SPI Mode
    Q3
    Q4
    Q2
    Q1
    DVDD
    MCO
    SDATA/
    MOSI
    PIN
    (OFF)
    50ns GLITCH
    REJECTION FILTER
    SPE = 0 (I2C ENABLE)
    HARDWARE I2C
    (SLAVE ONLY)
    SFR
    BITS
    MCI
    MDE
    I2C M
    03260-0-063
    Figure 65. SDATA/MOSI Pin I/O Functional Equivalent in I2C Mode
    Read-Modify-Write Instructions
    Some 8051 instructions that read a port read the latch while
    others read the pin. The instructions that read the latch rather
    than the pins are the ones that read a value, possibly change it,
    and then rewrite it to the latch. These are called read-modify-
    write instructions, which are listed below. When the destination
    operand is a port or a port bit, these instructions read the latch
    rather than the pin.
    Table 27. Read-Write-Modify Instructions
    Instruction
    Description
    ANL
    Logical AND, e.g., ANL P1, A
    ORL
    (Logical OR, e.g., ORL P2, A
    XRL
    (Logical EX-OR, e.g., XRL P3, A
    JBC
    Jump if Bit = 1 and clear bit, e.g., JBC P1.1,
    LABEL
    CPL
    Complement bit, e.g., CPL P3.0
    INC
    Increment, e.g., INC P2
    DEC
    Decrement, e.g., DEC P2
    DJNZ
    Decrement and Jump if Not Zero, e.g., DJNZ
    P3, LABEL
    MOV PX.Y, C1
    Move Carry to Bit Y of Port X
    CLR PX.Y1
    Clear Bit Y of Port X
    SETB PX.Y1
    Set Bit Y of Port X
    1 These instructions read the port byte (all 8 bits), modify the addressed bit,
    and then write the new byte back to the latch.
    Read-modify-write instructions are directed to the latch rather
    than to the pin to avoid a possible misinterpretation of the
    voltage level of a pin. For example, a port pin might be used to
    drive the base of a transistor. When 1 is written to the bit, the
    transistor is turned on. If the CPU then reads the same port bit
    at the pin rather than the latch, it reads the base voltage of the
    transistor and interprets it as a Logic 0. Reading the latch rather
    than the pin returns the correct value of 1.
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    ADUC843BS62-5 制造商:Analog Devices 功能描述:IC MICROCONTROLLER
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