參數(shù)資料
型號(hào): MPC5200VR400BR2
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 13/72頁(yè)
文件大?。?/td> 0K
描述: IC MPU 32BIT 400MHZ 272-PBGA
標(biāo)準(zhǔn)包裝: 500
系列: MPC52xx
核心處理器: e300
芯體尺寸: 32-位
速度: 400MHz
連通性: CAN,EBI/EMI,以太網(wǎng),I²C,IrDA,J1850,SPI,UART/USART,USB
外圍設(shè)備: AC'97,DMA,I²S,POR,PWM,WDT
輸入/輸出數(shù): 56
程序存儲(chǔ)器類型: 外部程序存儲(chǔ)器
RAM 容量: 16K x 8
電壓 - 電源 (Vcc/Vdd): 1.42 V ~ 1.58 V
振蕩器型: 內(nèi)部
工作溫度: 0°C ~ 70°C
封裝/外殼: 272-BBGA
包裝: 帶卷 (TR)
MPC5200B Data Sheet, Rev. 4
20
Freescale Semiconductor
Figure 7. Timing Diagram—DDR SDRAM Memory Read Timing
MEM_CLK
Control Signals
MDQ (Data)
MA (Address)
MEM_CLK
MDQS (Data Strobe)
NOTE: Control Signals signals are composed of RAS, CAS, MEM_WE, MEM_CS, MEM_CS1 and CLK_EN
Active
NOP
READ
NOP
thold
Row
Column
MBA (Bank Selects)
tvalid
thold
tvalid
thold
tvalid
tdata_valid_min
tdata_valid_max
Read Data
tdata_sample_min
tdata_sample_max
Sample Window
MDQ (Data)
MDQS (Data Strobe)
tdata_valid_min
tdata_valid_max
Read Data
tdata_sample_min
tdata_sample_max
Sample Window
Sample position A: data are sampled on the expected edge of MEM_CLK, the MDQS signal indicate the valid data
Sample
position
A
Sample
position
B
Sample position B: data are sampled on a later edge of MEM_CLK, SDRAM controller is waiting for the valid MDQS signal
0.5 × tMEM_CLK
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