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    參數(shù)資料
    型號: PIC18F23K20-I/SS
    廠商: Microchip Technology
    文件頁數(shù): 18/42頁
    文件大?。?/td> 0K
    描述: IC PIC MCU FLASH 4KX16 28-SSOP
    產(chǎn)品培訓(xùn)模塊: XLP Deep Sleep Mode
    8-bit PIC® Microcontroller Portfolio
    標(biāo)準(zhǔn)包裝: 47
    系列: PIC® XLP™ 18F
    核心處理器: PIC
    芯體尺寸: 8-位
    速度: 64MHz
    連通性: I²C,SPI,UART/USART
    外圍設(shè)備: 欠壓檢測/復(fù)位,HLVD,POR,PWM,WDT
    輸入/輸出數(shù): 24
    程序存儲器容量: 8KB(4K x 16)
    程序存儲器類型: 閃存
    EEPROM 大?。?/td> 256 x 8
    RAM 容量: 512 x 8
    電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 3.6 V
    數(shù)據(jù)轉(zhuǎn)換器: A/D 11x10b
    振蕩器型: 內(nèi)部
    工作溫度: -40°C ~ 85°C
    封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
    包裝: 管件
    產(chǎn)品目錄頁面: 655 (CN2011-ZH PDF)
    2009 Microchip Technology Inc.
    Advance Information
    DS41297F-page 25
    PIC18F2XK20/4XK20
    4.2
    Verify Code Memory and ID
    Locations
    The verify step involves reading back the code memory
    space and comparing it against the copy held in the
    programmer’s buffer. Memory reads occur a single byte
    at a time, so two bytes must be read to compare
    against the word in the programmer’s buffer. Refer to
    Configuration Bits” for implementation details of
    reading code memory.
    The Table Pointer must be manually set to 200000h
    (base address of the ID locations) once the code
    memory has been verified. The post-increment feature
    of the table read 4-bit command can not be used to
    increment the Table Pointer beyond the code memory
    space. In a 64-Kbyte device, for example, a post-incre-
    ment read of address FFFFh will wrap the Table Pointer
    back to 000000h, rather than point to unimplemented
    address 010000h.
    FIGURE 4-2:
    VERIFY CODE MEMORY FLOW
    Read Low Byte
    Read High Byte
    Does
    Word = Expect
    data?
    Failure,
    Report
    Error
    All
    code memory
    verified?
    No
    Yes
    No
    Set TBLPTR = 0
    Start
    Set TBLPTR = 200000h
    Yes
    Read Low Byte
    Read High byte
    Does
    Word = Expect
    data?
    Failure,
    Report
    Error
    All
    ID locations
    verified?
    No
    Yes
    Done
    Yes
    No
    with Post-increment
    Increment
    Pointer
    with Post-Increment
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