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    參數(shù)資料
    型號: AT90S4433-8AC
    廠商: Atmel
    文件頁數(shù): 112/126頁
    文件大小: 0K
    描述: IC MCU 4K FLSH 8MHZ A/D 32TQFP
    標準包裝: 250
    系列: AVR® 90S
    核心處理器: AVR
    芯體尺寸: 8-位
    速度: 8MHz
    連通性: SPI,UART/USART
    外圍設備: 欠壓檢測/復位,POR,PWM,WDT
    輸入/輸出數(shù): 20
    程序存儲器容量: 4KB(2K x 16)
    程序存儲器類型: 閃存
    EEPROM 大?。?/td> 256 x 8
    RAM 容量: 128 x 8
    電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
    數(shù)據(jù)轉換器: A/D 6x10b
    振蕩器型: 外部
    工作溫度: 0°C ~ 70°C
    封裝/外殼: 32-TQFP
    包裝: 托盤
    86
    AT90S/LS4433
    1042H–AVR–04/03
    Programming the Flash
    and EEPROM
    Atmel’s AT90S4433 offers 4K bytes of In-System Reprogrammable Flash Program
    memory and 256 bytes of EEPROM Data memory.
    The AT90S4433 is shipped with the On-chip Flash Program and EEPROM Data mem-
    ory arrays in the erased state (i.e., contents = $FF) and ready to be programmed. This
    device supports a High-voltage (12V) Parallel Programming mode and a Low-voltage
    Serial Programming mode. The +12V is used for programming enable only, and no cur-
    rent of significance is drawn by this pin. The Serial Programming mode provides a
    convenient way to download program and data into the AT90S4433 inside the user’s
    system.
    The Program and Data memory arrays on the AT90S4433 are programmed byte-by-
    byte in either Programming mode. For the EEPROM, an auto-erase cycle is provided
    within the self-timed write instruction in the Serial Programming mode. During program-
    ming, the supply voltage must be in accordance with Table 29.
    Parallel Programming
    This section describes how to Parallel program and verify Flash Program memory,
    EEPROM Data memory, Lock bits and Fuse bits in the AT90S4433.
    Signal Names
    In this section, some pins of the AT90S4433 are referenced by signal names describing
    their function during Parallel programming. See Figure 62 and Table 30. Pins not
    described in Table 30 are referenced by pin name.
    The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a posi-
    tive pulse. The bit codings are shown in Table 31.
    When pulsing WR or OE, the command loaded determines the action executed. The
    command is a byte where the different bits are assigned functions as shown in Table 32.
    Figure 62. Parallel Programming
    Table 29. Supply Voltage during Programming
    Part
    Serial Programming
    Parallel Programming
    AT90LS4433
    2.7 - 6.0V
    4.5 - 5.5V
    AT90S4433
    4.0 - 6.0V
    4.5 - 5.5V
    AT90S4433
    VCC
    +5V
    RESET
    GND
    XTAL1
    PD1
    PD2
    PD3
    PD4
    PD5
    PD6
    +12V
    RDY/BSY
    OE
    BS
    XA0
    XA1
    WR
    PC1 - PC0,
    PB5 - PB0
    DATA
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