• <thead id="pajzd"><ul id="pajzd"></ul></thead>
      • 參數(shù)資料
        型號(hào): AT89S52-24AC
        廠商: Atmel
        文件頁(yè)數(shù): 33/37頁(yè)
        文件大?。?/td> 0K
        描述: IC MCU 8K FLASH 24MHZ 44-TQFP
        標(biāo)準(zhǔn)包裝: 160
        系列: 89S
        核心處理器: 8051
        芯體尺寸: 8-位
        速度: 24MHz
        連通性: UART/USART
        外圍設(shè)備: WDT
        輸入/輸出數(shù): 32
        程序存儲(chǔ)器容量: 8KB(8K x 8)
        程序存儲(chǔ)器類型: 閃存
        RAM 容量: 256 x 8
        電壓 - 電源 (Vcc/Vdd): 4 V ~ 5.5 V
        振蕩器型: 內(nèi)部
        工作溫度: 0°C ~ 70°C
        封裝/外殼: 44-TQFP
        包裝: 托盤
        5
        1919D–MICRO–6/08
        AT89S52
        4.6
        Port 3
        Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. The Port 3 output buffers can
        sink/source four TTL inputs. When 1s are written to Port 3 pins, they are pulled high by the inter-
        nal pull-ups and can be used as inputs. As inputs, Port 3 pins that are externally being pulled low
        will source current (I
        IL) because of the pull-ups.
        Port 3 receives some control signals for Flash programming and verification.
        Port 3 also serves the functions of various special features of the AT89S52, as shown in the fol-
        lowing table.
        4.7
        RST
        Reset input. A high on this pin for two machine cycles while the oscillator is running resets the
        device. This pin drives high for 98 oscillator periods after the Watchdog times out. The DISRTO
        bit in SFR AUXR (address 8EH) can be used to disable this feature. In the default state of bit
        DISRTO, the RESET HIGH out feature is enabled.
        4.8
        ALE/PROG
        Address Latch Enable (ALE) is an output pulse for latching the low byte of the address during
        accesses to external memory. This pin is also the program pulse input (PROG) during Flash
        programming.
        In normal operation, ALE is emitted at a constant rate of 1/6 the oscillator frequency and may be
        used for external timing or clocking purposes. Note, however, that one ALE pulse is skipped dur-
        ing each access to external data memory.
        If desired, ALE operation can be disabled by setting bit 0 of SFR location 8EH. With the bit set,
        ALE is active only during a MOVX or MOVC instruction. Otherwise, the pin is weakly pulled high.
        Setting the ALE-disable bit has no effect if the microcontroller is in external execution mode.
        Port Pin
        Alternate Functions
        P3.0
        RXD (serial input port)
        P3.1
        TXD (serial output port)
        P3.2
        INT0 (external interrupt 0)
        P3.3
        INT1 (external interrupt 1)
        P3.4
        T0 (timer 0 external input)
        P3.5
        T1 (timer 1 external input)
        P3.6
        WR (external data memory write strobe)
        P3.7
        RD (external data memory read strobe)
        相關(guān)PDF資料
        PDF描述
        AT89S51-24PI IC 8051 MCU 4K FLASH 40-DIP
        AT89S51-24PC IC 8051 MCU 4K FLASH 40-DIP
        AT89LV55-12PC IC 8051 MCU FLASH 20K 40DIP
        AT89LV55-12JI IC 8051 MCU FLASH 20K 44PLCC
        AT89LV55-12JC IC 8051 MCU FLASH 20K 44PLCC
        相關(guān)代理商/技術(shù)參數(shù)
        參數(shù)描述
        AT89S52-24AI 功能描述:8位微控制器 -MCU 8K ISP FLASH 2.7 TO 5.5V - 24MHz 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
        AT89S52-24AU 功能描述:8位微控制器 -MCU 8kB Flash 256B RAM 33MHz 4.0V-5.5V 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
        AT89S52-24AU SL383 制造商:Atmel Corporation 功能描述:8051 8K ISP FLASH 4.0 TO 5.5V
        AT89S52-24AUR 功能描述:8051 89S Microcontroller IC 8-Bit 24MHz 8KB (8K x 8) FLASH 44-TQFP (10x10) 制造商:atmel 系列:89S 包裝:托盤 零件狀態(tài):有效 核心處理器:8051 核心尺寸:8-位 速度:24MHz 連接性:UART/USART 外設(shè):WDT I/O 數(shù):32 程序存儲(chǔ)容量:8KB(8K x 8) 程序存儲(chǔ)器類型:閃存 EEPROM 容量:- RAM 容量:256 x 8 電壓 - 電源(Vcc/Vdd):4 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器類型:內(nèi)部 工作溫度:-40°C ~ 85°C(TA) 封裝/外殼:44-TQFP 供應(yīng)商器件封裝:44-TQFP(10x10) 標(biāo)準(zhǔn)包裝:160
        AT89S52-24JC 功能描述:8位微控制器 -MCU 8K ISP FLASH 2.7 TO 5.5V - 24MHZ 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