MCF5227x ColdFire Microprocessor Data Sheet, Rev. 8 Electrical Characteristics F" />
參數(shù)資料
型號: PCF52274CLU120
廠商: Freescale Semiconductor
文件頁數(shù): 15/46頁
文件大小: 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
MCF5227x ColdFire Microprocessor Data Sheet, Rev. 8
Electrical Characteristics
Freescale Semiconductor
22
NOTE
The processor drives the data lines during the first clock cycle of the transfer with the full
32-bit address. This may be ignored by standard connected devices using non-multiplexed
address and data buses. However, some applications may find this feature beneficial.
The address and data busses are muxed between the FlexBus and SDRAM controller. At
the end of the read and write bus cycles the address signals are indeterminate.
Figure 9. FlexBus Read Timing
FB4
Data Input Setup
tDVFBCH
3.5
ns
FB5
Data Input Hold
tDIFBCH
0—
ns
FB6
Transfer Acknowledge (TA) Input Setup
tCVFBCH
4—
ns
FB7
Transfer Acknowledge (TA) Input Hold
tCIFBCH
0—
ns
1 Timing for chip selects only applies to the FB_CS[5:0] signals. Please see Section 5.7.2.2, “DDR SDRAM AC Timing
Specifications,for SD_CS[3:0] timing.
2 The FlexBus supports programming an extension of the address hold. Please consult the device reference manual for more
information.
Table 13. FlexBus AC Timing Specifications (continued)
Num
Characteristic
Symbol
Min
Max
Unit
Notes
FB_CLK
FB_R/W
S0
S1
S2
S3
FB_TS
FB_A[23:0]
FB_D[31:X]
FB_CSn, FB_OE,
FB_BE/BWEn
FB_TA
DATA
ADDR[31:X]
ADDR[23:0]
FB3
FB1
FB2
FB5
FB4
FB7
FB6
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