TS80C54/58X2 is compatible with the timer 2 i" /> 
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      參數(shù)資料
      

      


      


      
型號(hào)：
AT87C58X2-SLRUM

      

      
廠商：
Atmel

      

      
文件頁(yè)數(shù)：
6/62頁(yè)

      

      
文件大?。?/td>
0K

      

      
描述：
MCU 8051 32K EPROM 44PLCC

      

      
標(biāo)準(zhǔn)包裝：
500

      

      
系列：
87C

      

      
核心處理器：
8051
      		

      

      
芯體尺寸：
8-位
      		

      

      
速度：
40/20MHz
      		

      

      
連通性：
UART/USART
      		

      

      
外圍設(shè)備：
POR，WDT
      		

      

      
輸入/輸出數(shù)：
32
      		

      

      
程序存儲(chǔ)器容量：
32KB（32K x 8）
      		

      

      
程序存儲(chǔ)器類型：
OTP
      		

      

      
RAM 容量：
256 x 8
      		

      

      
電壓 - 電源 (Vcc/Vdd)：
4.5 V ~ 5.5 V
      		

      

      
振蕩器型：
內(nèi)部
      		

      

      
工作溫度：
-40°C ~ 85°C
      		

      

      
封裝/外殼：
44-LCC（J 形引線）
      		

      

      
包裝：
帶卷 (TR)
      		

      

      

      

	
      
    
    

    
      
	
      14
      4431E–8051–04/06
      AT/TS8xC54/8X2
      8.
      Timer 2
      The timer 2 in the
      TS80C54/58X2 is compatible with the timer 2 in the 80C52.
      It is a 16-bit timer/counter: the count is maintained by two eight-bit timer registers, TH2 and TL2,
      connected in cascade. It is controlled by T2CON register (See Table 8-1) and T2MOD register
      (See Table 8-2). Timer 2 operation is similar to Timer 0 and Timer 1. C/T2 selects F
      OSC/12 (timer
      operation) or external pin T2 (counter operation) as the timer clock input. Setting TR2 allows TL2
      to be incremented by the selected input.
      Timer 2 has 3 operating modes: capture, autoreload and Baud Rate Generator. These modes
      are selected by the combination of RCLK, TCLK and CP/RL2 (T2CON), as described in the
      Atmel Wireless & Microcontrollers 8-bit Microcontroller Hardware description.
      Refer to the Atmel Wireless & Microcontrollers 8-bit Microcontroller Hardware description for the
      description of Capture and Baud Rate Generator Modes.
      In
      TS80C54/58X2 Timer 2 includes the following enhancements:
       Auto-reload mode with up or down counter
       Programmable clock-output
      8.1
      Auto-Reload Mode
      The auto-reload mode configures timer 2 as a 16-bit timer or event counter with automatic
      reload. If DCEN bit in T2MOD is cleared, timer 2 behaves as in 80C52 (refer to the Atmel Wire-
      less & Microcontrollers 8-bit Microcontroller Hardware description). If DCEN bit is set, timer 2
      acts as an Up/down timer/counter as shown in Figure 8-1. In this mode the T2EX pin controls
      the direction of count.
      When T2EX is high, timer 2 counts up. Timer overflow occurs at FFFFh which sets the TF2 flag
      and generates an interrupt request. The overflow also causes the 16-bit value in RCAP2H and
      RCAP2L registers to be loaded into the timer registers TH2 and TL2.
      When T2EX is low, timer 2 counts down. Timer underflow occurs when the count in the timer
      registers TH2 and TL2 equals the value stored in RCAP2H and RCAP2L registers. The under-
      flow sets TF2 flag and reloads FFFFh into the timer registers.
      The EXF2 bit toggles when timer 2 overflows or underflows according to the the direction of the
      count. EXF2 does not generate any interrupt. This bit can be used to provide 17-bit resolution
      
    
      
    
    
      


      


      

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      相關(guān)代理商/技術(shù)參數(shù)
      		

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AT87C58X2-SLSUL
功能描述:8位微控制器 -MCU OTP C58/32K 40MHZ 3V 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

      

      
AT87C58X2-SLSUM
功能描述:8位微控制器 -MCU OTP C58/32K 40MHZ 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

      

      
AT87C58X2-SLSUV
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AT87F51-12AC
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