参数资料
型号: MSC8144VT800A
厂商: Freescale Semiconductor
文件页数: 24/80页
文件大小: 0K
描述: IC DSP QUAD 800MHZ 783FCBGA
标准包装: 1
系列: StarCore
类型: SC3400 内核
接口: 以太网,I²C,SPI,TDM,UART,UTOPIA
时钟速率: 800MHz
非易失内存: 外部
芯片上RAM: 10.5MB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.00V
工作温度: 0°C ~ 90°C
安装类型: 表面贴装
封装/外壳: 783-BBGA,FCBGA
供应商设备封装: 783-FCPBGA(29x29)
包装: 托盘
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
Electrical Characteristics
Freescale Semiconductor
30
2.5.1.2
DDR (2.5V) SDRAM DC Electrical Characteristics
Table 7 provides the recommended operating conditions for the DDR SDRAM component(s) of the MSC8144 when
VDDDDR(typ) = 2.5 V.
Table 8 lists the current draw characteristics for MVREF.
Table 7. DDR SDRAM DC Electrical Characteristics for VDDDDR (typ) = 2.5 V
Parameter/Condition
Symbol
Min
Max
Unit
I/O supply voltage1
VDDDDR
2.3
2.7
V
I/O reference voltage2
MVREF
0.49
× VDDDDR
0.51
× VDDDDR
V
I/O termination voltage3
VTT
MVREF – 0.04
MVREF + 0.04
V
Input high voltage
VIH
MVREF + 0.15
VDDDDR + 0.3
V
Input low voltage
VIL
–0.3
MVREF – 0.15
V
Output leakage current4
IOZ
–50
50
μA
Output high current (VOUT = 1.95 V)
IOH
–16.2
mA
Output low current (VOUT = 0.35 V)
IOL
16.2
mA
Notes:
1.
VDDDDR is expected to be within 50 mV of the DRAM VDD at all times.
2.
MVREF is expected to be equal to 0.5 × VDDDDR, and to track VDDDDR DC variations as measured at the receiver.
Peak-to-peak noise on MVREF may not exceed ±2% of the DC value.
3.
VTT is not applied directly to the device. It is the supply to which far end signal termination is made and is expected to be
equal to MVREF. This rail should track variations in the DC level of VDDDDR.
4.
Output leakage is measured with all outputs are disabled, 0 V
V
OUT
V
DDDDR.
Table 8. Current Draw Characteristics for MVREF
Parameter / Condition
Symbol
Min
Max
Unit
Current draw for MVREF
IMVREF
500
μA
Note:
The voltage regulator for MVREF must be able to supply up to 500 μA current.
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