參數資料
型號： MSC8252SVT1000B
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 數字信號處理
英文描述： 0-BIT, OTHER DSP, PBGA783
封裝： 29 X 29 MM, LEAD FREE, PLASTIC, FCBGA-783
文件頁數： 46/68頁
文件大?。?/td> 912K
代理商： MSC8252SVT1000B
MSC8252 Dual-Core Digital Signal Processor Data Sheet, Rev. 5
Electrical Characteristics
Freescale Semiconductor
50
2.6.6
SPI Timing
Table 36 lists the SPI input and output AC timing specifications.
Figure 27 provides the AC test load for the SPI.
Figure 27. SPI AC Test Load
Figure 28 and Figure 29 represent the AC timings from Table 36. Note that although the specifications generally reference the
rising edge of the clock, these AC timing diagrams also apply when the falling edge is the active edge.
Figure 28 shows the SPI timings in slave mode (external clock).
Figure 28. SPI AC Timing in Slave Mode (External Clock)
Figure 29 shows the SPI timings in master mode (internal clock).
Table 36. SPI AC Timing Specifications
Parameter
Symbol 1
Min
Max
Unit
Note
SPI outputs valid—Master mode (internal clock) delay
tNIKHOV
—6
ns
2
SPI outputs hold—Master mode (internal clock) delay
tNIKHOX
0.5
—
ns
2
SPI outputs valid—Slave mode (external clock) delay
tNEKHOV
—12
ns
2
SPI outputs hold—Slave mode (external clock) delay
tNEKHOX
2—
ns
2
SPI inputs—Master mode (internal clock) input setup time
tNIIVKH
12
—
ns
—
SPI inputs—Master mode (internal clock) input hold time
tNIIXKH
0—
ns
—
SPI inputs—Slave mode (external clock) input setup time
tNEIVKH
4—
ns
—
SPI inputs—Slave mode (external clock) input hold time
tNEIXKH
2—
ns
—
Notes:
1.
The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)
(reference)(state) for inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example,
tNIKHOX symbolizes the internal timing (NI) for the time SPICLK clock reference (K) goes to the high state (H) until
outputs (O) are invalid (X).
2.
Output specifications are measured from the 50% level of the rising edge of SPICLK to the 50% level of the signal.
Timings are measured at the pin.
Output
Z0 = 50 Ω
VDDIO/2
RL = 50 Ω
SPICLK (input)
tNEIXKH
tNEKHOV
Input Signals:
SPIMOSI
(See note)
Output Signals:
SPIMISO
(See note)
tNEIVKH
tNEKHOX
Note: measured with SPMODE[CI] = 0, SPMODE[CP] = 0
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相關代理商/技術參數
參數描述
MSC8252TVT1000B 功能描述:數字信號處理器和控制器 - DSP, DSC DSPStarcore 2-core RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
MSC8254 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Quad-Core Digital Signal Processor
MSC8254_11 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Quad-Core Digital Signal Processor
MSC8254SVT1000B 功能描述:數字信號處理器和控制器 - DSP, DSC DSPStarcore4-core R2.1 RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
MSC8254SVT800B 功能描述:數字信號處理器和控制器 - DSP, DSC DSPStarcore 4-core RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
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