參數(shù)資料
型號: AT89C51RC2-RLRIL
廠商: Atmel
文件頁數(shù): 36/127頁
文件大?。?/td> 0K
描述: IC MCU FLASH 8051 32K 3V 44-VQFP
標(biāo)準(zhǔn)包裝: 1
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
連通性: SPI,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LQFP
包裝: 剪切帶 (CT)
產(chǎn)品目錄頁面: 616 (CN2011-ZH PDF)
配用: AT89STK-11-ND - KIT STARTER FOR AT89C51RX2
其它名稱: AT89C51RC2RLRILCT
16
AT89C51RB2/RC2
4180E–8051–10/06
Enhanced Features
In comparison to the original 80C52, the AT89C51RB2/RC2 implements some new fea-
tures, which are:
X2 option
Dual Data Pointer
Extended RAM
Programmable Counter Array (PCA)
Hardware Watchdog
SPI interface
4-level interrupt priority system
power-off flag
ONCE mode
ALE disabling
Some enhanced features are also located in the UART and the timer 2
X2 Feature
The AT89C51RB2/RC2 core needs only 6 clock periods per machine cycle. This feature
called ‘X2’ provides the following advantages:
Divide frequency crystals by 2 (cheaper crystals) while keeping same CPU power.
Save power consumption while keeping same CPU power (oscillator power saving).
Save power consumption by dividing dynamically the operating frequency by 2 in
operating and idle modes.
Increase CPU power by 2 while keeping same crystal frequency.
In order to keep the original C51 compatibility, a divider by 2 is inserted between the
XTAL1 signal and the main clock input of the core (phase generator). This divider may
be disabled by software.
Description
The clock for the whole circuit and peripherals is first divided by 2 before being used by
the CPU core and the peripherals.
This allows any cyclic ratio to be accepted on XTAL1 input. In X2 mode, as this divider is
bypassed, the signals on XTAL1 must have a cyclic ratio between 40 to 60%.
Figure 5 shows the clock generation block diagram. X2 bit is validated on the rising edge
of the XTAL1
÷2 to avoid glitches when switching from X2 to X1 mode. Figure 6 shows
the switching mode waveforms.
Figure 5. Clock Generation Diagram
XTAL1
2
CKCON0
X2
8 bit Prescaler
F
OSC
FXTAL
0
1
XTAL1:2
FCLK CPU
F
CLK PERIPH
CKRL
相關(guān)PDF資料
PDF描述
AT89C51RE2-SLRUM MCU 8051 128K FLASH 44-PLCC
AT89C51SND1C-7HTUL IC MCU 64KB FLASH MEM 81-CBGA
AT89C51SND2C-7FTUL IC 8051 MCU FLASH 64K MP3 100BGA
AT89C52-24PI IC MICRO CTRL 24MHZ 40DIP
AT89C55WD-24AU IC 8051 MCU FLASH 20K 44TQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT89C51RC2-RLRIM 功能描述:IC MCU FLASH 8051 32K 5V 44-VQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:89C 標(biāo)準(zhǔn)包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C,LIN,SPI,UART/USART,USI 外圍設(shè)備:欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB(4K x 16) 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC(0.295",7.50mm 寬) 包裝:帶卷 (TR)
AT89C51RC2-RLRUL 功能描述:8位微控制器 -MCU C51RC2 FLASH 32k 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
AT89C51RC2-RLRUM 功能描述:8位微控制器 -MCU C51RC2 FLASH 32k 5V COM 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
AT89C51RC2-RLTCM 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 16K/ 32K Bytes Flash
AT89C51RC2-RLTIL 功能描述:8位微控制器 -MCU 80C31 w/4k 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