參數(shù)資料
    

    


    


    
型號(hào)：
MC68HC705C9ACB

    

    
廠商：
FREESCALE SEMICONDUCTOR INC

    

    
元件分類：
微控制器/微處理器

    

    
英文描述：
8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP42

    

    
封裝：
PLASTIC, SHRINK, DIP-42

    

    
文件頁數(shù)：
85/118頁

    

    
文件大小：
750K

    

    
代理商：
MC68HC705C9ACB


    

    

    

	
    
    
    

    
    
	
    SCI I/O Registers
    MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
    Freescale Semiconductor
    69
    FE — Receiver Framing Error Flag
    This clearable, read-only flag is set when there is a logic 0 where a stop bit should be in the character
    shifted into the receive shift register. If the received word causes both a framing error and an overrun
    error, the OR flag is set and the FE flag is not set. Clear the FE bit by reading the SCSR and then
    reading the SCDR.
    1 = Framing error
    0 = No framing error
    9.13.5 Baud Rate Register
    The baud rate register (BAUD), shown in Figure 9-12, selects the baud rate for both the receiver and the
    transmitter.
    SCP1 — SCP0–SCI Prescaler Select Bits
    These read/write bits control prescaling of the baud rate generator clock, as shown in Table 9-1. Reset
    clears both SCP1 and SCP0.
    SCR2 — SCR0–SCI Baud Rate Select Bits
    These read/write bits select the SCI baud rate, as shown in Table 9-2. Resets have no effect on the
    SCR2–SCR0 bits.
    $000D
    Bit 7
    6543
    2
    1
    Bit 0
    Read:
    SCP1
    SCP0
    SCR2
    SCR1
    SCR0
    Write:
    Reset:
    —
    0
    —
    U
    = Unimplemented
    U = Undetermined
    Figure 9-12. Baud Rate Register (BAUD)
    Table 9-1. Baud Rate Generator Clock Prescaling
    SCP[1:0]
    Baud Rate Generator Clock
    00
    Internal Clock
    ÷ 1
    01
    Internal Clock
    ÷ 3
    10
    Internal Clock
    ÷ 4
    11
    Internal Clock
    ÷ 13
    Table 9-2. Baud Rate Selection
    SCR[2:0]
    SCI Baud Rate (Baud)
    000
    Prescaled Clock
    ÷ 1
    001
    Prescaled Clock
    ÷ 2
    010
    Prescaled Clock
    ÷ 4
    011
    Prescaled Clock
    ÷ 8
    100
    Prescaled Clock
    ÷ 16
    101
    Prescaled Clock
    ÷ 32
    110
    Prescaled Clock
    ÷ 64
    111
    Prescaled Clock
    ÷ 128
    
    
    
    
    
    


    


    

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MC68HC705C9ACFB
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MC68HC705C9ACFBE
功能描述:8位微控制器 -MCU 8B MCU 352 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT

    

    
MC68HC705C9ACFN
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MC68HC705C9ACFNE
功能描述:8位微控制器 -MCU 8B MCU 352 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT

    

    
MC68HC705C9ACP
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