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    參數(shù)資料
    型號(hào): PIC24FJ16GA002T-I/SS
    廠商: Microchip Technology
    文件頁數(shù): 7/52頁
    文件大?。?/td> 0K
    描述: IC PIC MCU FLASH 16K 28SSOP
    產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
    標(biāo)準(zhǔn)包裝: 2,100
    系列: PIC® 24F
    核心處理器: PIC
    芯體尺寸: 16-位
    速度: 32MHz
    連通性: I²C,PMP,SPI,UART/USART
    外圍設(shè)備: 欠壓檢測/復(fù)位,LVD,POR,PWM,WDT
    輸入/輸出數(shù): 21
    程序存儲(chǔ)器容量: 16KB(5.5K x 24)
    程序存儲(chǔ)器類型: 閃存
    RAM 容量: 4K x 8
    電壓 - 電源 (Vcc/Vdd): 2 V ~ 3.6 V
    數(shù)據(jù)轉(zhuǎn)換器: A/D 10x10b
    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: 帶卷 (TR)
    配用: DM240011-ND - KIT STARTER MPLAB FOR PIC24F MCU
    AC162088-ND - HEADER MPLAB ICD2 24FJ64GA004 28
    AC164338-ND - MOD SKT PIC24F/DSPIC33F 28SOIC
    DV164033-ND - KIT START EXPLORER 16 MPLAB ICD2
    其它名稱: PIC24FJ16GA002T-I/SSTR
    2008 Microchip Technology Inc.
    DS39768D-page 15
    PIC24FJXXXGA0XX
    3.3
    Entering ICSP Mode
    As shown in Figure 3-4, entering ICSP Program/Verify
    mode requires three steps:
    1.
    MCLR is briefly driven high, then low.
    2.
    A 32-bit key sequence is clocked into PGDx.
    3.
    MCLR is then driven high within a specified
    period of time and held.
    The programming voltage applied to MCLR is VIH,
    which
    is
    essentially
    VDD
    in
    the
    case
    of
    PIC24FJXXXGA0XX devices. There is no minimum
    time requirement for holding at VIH. After VIH is
    removed, an interval of at least P18 must elapse before
    presenting the key sequence on PGDx.
    The key sequence is a specific 32-bit pattern:
    ‘0100 1101 0100 0011 0100 1000 0101 0001’
    (more easily remembered as 4D434851h in hexa-
    decimal). The device will enter Program/Verify mode only
    if the sequence is valid. The Most Significant bit (MSb) of
    the most significant nibble must be shifted in first.
    Once the key sequence is complete, VIH must be
    applied to MCLR and held at that level for as long as
    Program/Verify mode is to be maintained. An interval of
    at least time, P19 and P7, must elapse before present-
    ing data on PGDx. Signals appearing on PGCx before
    P7 has elapsed will not be interpreted as valid.
    On successful entry, the program memory can be
    accessed and programmed in serial fashion. While in
    ICSP mode, all unused I/Os are placed in the
    high-impedance state.
    FIGURE 3-4:
    ENTERING ICSP MODE
    MCLR
    PGDx
    PGCx
    VDD
    P6
    P14
    b31
    b30
    b29
    b28
    b27
    b2
    b1
    b0
    b3
    ...
    Program/Verify Entry Code = 4D434851h
    P1A
    P1B
    P18
    P19
    010
    0
    P7
    VIH
    1
    0
    1
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