參數(shù)資料
型號: MSC8256TVT1000B
廠商: Freescale Semiconductor
文件頁數(shù): 31/70頁
文件大?。?/td> 0K
描述: IC DSP 6 CORE 1GHZ 783FCPBGA
標準包裝: 1
系列: StarCore
類型: SC3850 內(nèi)核
接口: 以太網(wǎng),I²C,PCI,RGMII,串行 RapidIO,SGMII,SPI,UART/USART
時鐘速率: 1.0GHz
非易失內(nèi)存: ROM(96 kB)
芯片上RAM: 576kB
電壓 - 輸入/輸出: 2.50V
電壓 - 核心: 1.00V
工作溫度: -40°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
MSC8256 Six-Core Digital Signal Processor Data Sheet, Rev. 6
Freescale Semiconductor
37
This section describes the AC timing characteristics for the MSC8256.
2.6.1
DDR SDRAM AC Timing Specifications
This section describes the AC electrical characteristics for the DDR SDRAM interface.
2.6.1.1
DDR SDRAM Input AC Timing Specifications
Table 18 provides the input AC timing specifications for the DDR SDRAM when VDDDDR (typ) = 1.8 V.
Table 19 provides the input AC timing specifications for the DDR SDRAM when VDDDDR (typ) = 1.5 V.
Table 20 provides the input AC timing specifications for the DDR SDRAM interface.
Output low voltage (VDDIO = min, IOL= 1.0 mA)
VOL
GND – 0.3
0.40
V
1
Notes:
1.
The min VIL and max VIH values are based on the respective min and max VIN values listed in Table 3.
2.
The symbol VIN represents the input voltage of the supply. It is referenced in Table 3.
Table 18. DDR2 SDRAM Input AC Timing Specifications for 1.8 V Interface
Parameter
Symbol
Min
Max
Unit
AC input low voltage
VIL
—MVREF – 0.20
V
AC input high voltage
VIH
MVREF + 0.20
V
Note:
At recommended operating conditions with VDDDDR of 1.8 ± 5%.
Table 19. DDR3 SDRAM Input AC Timing Specifications for 1.5 V Interface
Parameter
Symbol
Min
Max
Unit
AC input low voltage
VIL
—MVREF – 0.175
V
AC input high voltage
VIH
MVREF + 0.175
V
Note:
At recommended operating conditions with VDDDDR of 1.5 ± 5%.
Table 20. DDR SDRAM Input AC Timing Specifications
Parameter
Symbol
Min
Max
Unit
Notes
Controller Skew for MDQS—MDQ/MECC/MDM
800 MHz data rate
667 MHz data rate
tCISKEW
–200
–240
200
240
ps
1, 2
Tolerated Skew for MDQS—MDQ/MECC/MDM
800 MHz data rate
667 MHz data rate
tDISKEW
–425
–510
425
510
ps
2, 3
Table 17. 2.5 V I/O DC Electrical Characteristics (continued)
Characteristic
Symbol
Min
Max
Unit
Notes
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