The timing waveforms s" />
參數(shù)資料
型號: DSP56301VF100
廠商: Freescale Semiconductor
文件頁數(shù): 49/124頁
文件大?。?/td> 0K
描述: IC DSP 24BIT FIXED-POINT 252-BGA
產(chǎn)品變化通告: DSP56301 Discontinuation 12/Nov/2009
標(biāo)準(zhǔn)包裝: 60
系列: DSP563xx
類型: 定點(diǎn)
接口: 主機(jī)接口,SSI,SCI
時鐘速率: 100MHz
非易失內(nèi)存: ROM(9 kB)
芯片上RAM: 24kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 3.30V
工作溫度: -40°C ~ 100°C
安裝類型: 表面貼裝
封裝/外殼: 252-BGA
供應(yīng)商設(shè)備封裝: 252-MAPBGA(21x21)
包裝: 托盤
DSP56301 Technical Data, Rev. 10
2-4
Freescale Semiconductor
Specifications
2.5 AC Electrical Characteristics
The timing waveforms shown in the AC electrical characteristics section are tested with a VIL maximum of 0.3 V
and a VIH minimum of 2.4 V for all pins except EXTAL, which is tested using the input levels shown in Note 6 of
Table 2-3. AC timing specifications, which are referenced to a device input signal, are measured in production with
respect to the 50 percent point of the respective input signal’s transition.
Note:
Although the minimum value for the frequency of EXTAL is 0 MHz, the device AC test conditions are 15
MHz and rated speed.
All specifications for the high impedance state are guaranteed by design.
2.5.1
Internal Clocks
Table 2-4.
Internal Clocks, CLKOUT
Characteristics
Symbol
Expression1, 2
Min
Typ
Max
Internal operation frequency and CLKOUT with PLL enabled
f
(Ef
× MF)/
(PDF
× DF)
Internal operation frequency and CLKOUT with PLL disabled
f
Ef/2
Internal clock and CLKOUT high period
With PLL disabled
With PLL enabled and MF
≤ 4
With PLL enabled and MF > 4
TH
0.49
× ETC ×
PDF
× DF/MF
0.47
× ETC ×
PDF
× DF/MF
ETC
0.51
× ETC ×
PDF
× DF/MF
0.53
× ETC ×
PDF
× DF/MF
Internal clock and CLKOUT low period
With PLL disabled
With PLL enabled and MF
≤ 4
With PLL enabled and MF > 4
TL
0.49
× ETC ×
PDF
× DF/MF
0.47
× ETC ×
PDF
× DF/MF
ETC
0.51
× ETC ×
PDF
× DF/MF
0.53
× ETC ×
PDF
× DF/MF
Internal clock and CLKOUT cycle time with PLL enabled
TC
—ETC ×
PDF
×
DF/MF
Internal clock and CLKOUT cycle time with PLL disabled
TC
—2
× ETC
Instruction cycle time
ICYC
—TC
Notes:
1.
DF = Division Factor; Ef = External frequency; ETC = External clock cycle = 1/Ef;
MF = Multiplication Factor; PDF = Predivision Factor; TC = Internal clock cycle
2.
See the PLL and Clock Generator section in the DSP56300 Family Manual for details on the PLL.
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