參數(shù)資料
型號: MSC8144SVT1000A
廠商: Freescale Semiconductor
文件頁數(shù): 33/80頁
文件大?。?/td> 0K
描述: IC DSP QUAD 1GHZ 783FCPBGA
標(biāo)準(zhǔn)包裝: 1
系列: StarCore
類型: SC3400 內(nèi)核
接口: 以太網(wǎng),I²C,SPI,TDM,UART,UTOPIA
時鐘速率: 1.0GHz
非易失內(nèi)存: 外部
芯片上RAM: 10.5MB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.00V
工作溫度: 0°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 783-BBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 783-FCPBGA(29x29)
包裝: 托盤
Electrical Characteristics
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
Freescale Semiconductor
39
2.6.4
DDR SDRAM AC Timing Specifications
This section describes the AC electrical characteristics for the DDR SDRAM interface.
2.6.4.1
DDR SDRAM Input Timings
Table 20 provides the input AC timing specifications for the DDR SDRAM when VDDDDR (typ) = 2.5 V.
Table 21 provides the input AC timing specifications for the DDR SDRAM when VDDDDR (typ) = 1.8 V.
Table 22 provides the input AC timing specifications for the DDR SDRAM interface.
Table 20. DDR SDRAM Input AC Timing Specifications for 2.5-V Interface
Parameter
Symbol
Min
Max
Unit
AC input low voltage
VIL
—MVREF – 0.31
V
AC input high voltage
VIH
MVREF + 0.31
V
Note:
At recommended operating conditions with VDDDDR of 2.5 ± 5%.
Table 21. DDR2 SDRAM Input AC Timing Specifications for 1.8-V Interface
Parameter
Symbol
Min
Max
Unit
AC input low voltage
VIL
—MVREF – 0.25
V
AC input high voltage
VIH
MVREF + 0.25
V
Note:
At recommended operating conditions with VDDDDR of 1.8 ± 5%.
Table 22. DDR SDRAM Input AC Timing Specifications
Parameter
Symbol
Min
Max
Unit
Controller Skew for MDQS—MDQ/MECC/MDM1
400 MHz
333 MHz
266 MHz
200 MHz
tCISKEW
–365
–390
–428
–490
365
390
428
490
ps
Notes:
1.
tCISKEW represents the total amount of skew consumed by the controller between MDQS[n] and any corresponding bit that is
captured with MDQS[n]. Subtract this value from the total timing budget.
2.
At recommended operating conditions with VDDDDR (1.8 V or 2.5 V) ± 5%
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