Timing waveforms in Section 4.4 are tested " />
參數(shù)資料
型號: DSP56857BUE
廠商: Freescale Semiconductor
文件頁數(shù): 19/53頁
文件大?。?/td> 0K
描述: IC DSP 16BIT 120MHZ 100-LQFP
標(biāo)準(zhǔn)包裝: 90
系列: 568xx
核心處理器: 56800E
芯體尺寸: 16-位
速度: 120MHz
連通性: SCI,SPI,SSI
外圍設(shè)備: DMA,POR,WDT
輸入/輸出數(shù): 47
程序存儲器容量: 80KB(40K x 16)
程序存儲器類型: SRAM
RAM 容量: 24K x 16
電壓 - 電源 (Vcc/Vdd): 1.62 V ~ 1.98 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-LQFP
包裝: 托盤
56857 Technical Data, Rev. 6
26
Freescale Semiconductor
4.4 AC Electrical Characteristics
Timing waveforms in Section 4.4 are tested with a VIL maximum of 0.8V and a VIH minimum of 2.0V for
all pins except XTAL, which is tested using the input levels in Section 4.2. In Figure 4-4 the levels of VIH
and VIL for an input signal are shown.
Figure 4-4 Input Signal Measurement References
Figure 4-5 shows the definitions of the following signal states:
Active state, when a bus or signal is driven, and enters a low impedance state
Tri-stated, when a bus or signal is placed in a high impedance state
Data Valid state, when a signal level has reached VOL or VOH
Data Invalid state, when a signal level is in transition between VOL and VOH
Figure 4-5 Signal States
VIH
VIL
Fall Time
Input Signal
Note: The midpoint is VIL + (VIH – VIL)/2.
Midpoint1
Low
High
90%
50%
10%
Rise Time
Data Invalid State
Data1
Data2 Valid
Data
Tri-stated
Data3 Valid
Data2
Data3
Data1 Valid
Data Active
相關(guān)PDF資料
PDF描述
DSP56858FVE IC DSP 16BIT 120MHZ 144-LQFP
DSP56F801FA80E IC DSP 60MHZ 16KB FLASH 48-LQFP
DSP56F802TA80E IC DSP 60MHZ 16KB FLASH 32-LQFP
DSP56F803BU80E IC DSP 80MHZ 64KB FLASH 100LQFP
DSP56F805FV80E IC DSP 80MHZ 64KB FLASH 144LQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DSP56857E 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
DSP56857PB 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:120 MIPS Hybrid Processor
DSP56858 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
DSP56858E 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
DSP56858EVM 制造商:Freescale Semiconductor 功能描述:Microprocessor Support IC For Use With:D