MCF5227x ColdFire Microprocessor Data Sheet, Rev. 8 Freesca" />
參數(shù)資料
型號(hào): PCF52274CLU120
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 42/46頁(yè)
文件大?。?/td> 0K
描述: MCU 32-BIT W/LCD TOUCH 176-LQFP
標(biāo)準(zhǔn)包裝: 40
系列: MCF5227x
核心處理器: Coldfire V2
芯體尺寸: 32-位
速度: 120MHz
連通性: CAN,EBI/EMI,I²C,SPI,SSI,UART/USART,USB OTG
外圍設(shè)備: DMA,LCD,PWM,WDT
輸入/輸出數(shù): 47
程序存儲(chǔ)器類型: ROMless
RAM 容量: 128K x 8
電壓 - 電源 (Vcc/Vdd): 1.4 V ~ 1.6 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 176-LQFP
包裝: 托盤
Ordering Information
MCF5227x ColdFire Microprocessor Data Sheet, Rev. 8
Freescale Semiconductor
5
2
Ordering Information
3
Hardware Design Considerations
3.1
PLL Power Filtering
To further enhance noise isolation, an external filter is strongly recommended for PLL analog VDD pins. The filter shown in
Figure 2 should be connected between the board VDD and the PLLVDD pins. The resistor and capacitors should be placed as
close to the dedicated PLLVDD pin as possible.
Figure 2. System PLL VDD Power Filter
3.2
USB Power Filtering
To minimize noise, external filters are required for each of the USB power pins. The filter shown in Figure 3 should be
connected between the board EVDD and the USBVDD pin. The resistor and capacitors should be placed as close to the dedicated
USBVDD pin as possible.
Figure 3. USB VDD Power Filter
NOTE
In addition to the above filter circuitry, a 0.01 F capacitor is also recommended in parallel
with those shown.
Table 2. Orderable Part Numbers
Freescale Part
Number
Description
Package
Speed
Temperature
MCF52274CLU120
MCF52274 RISC Microprocessor
176 LQFP
120 MHz
–40
° to +85° C
MCF52277CVM160
MCF52277 RISC Microprocessor
196 MAPBGA
166.67 MHz
–40
° to +85° C
Board IVDD
10
Ω
0.1 F
PLL VDD Pin
10 F
GND
Board EVDD
0
Ω
0.1 F
USB VDD Pin
10 F
GND
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