參數(shù)資料
型號(hào): DSP56857BUE
廠商: Freescale Semiconductor
文件頁數(shù): 28/53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(chǔ)器容量: 80KB(40K x 16)
程序存儲(chǔ)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
34
Freescale Semiconductor
4.8 Serial Peripheral Interface (SPI) Timing
1. Parameters listed are guaranteed by design.
Table 4-9 SPI Timing 1
Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz
Characteristic
Symbol
Min
Max
Unit
See
Figure
Cycle time
Master
Slave
tC
25
ns
Enable lead time
Master
Slave
tELD
12.5
ns
Enable lag time
Master
Slave
tELG
12.5
ns
Clock (SCLK) high time
Master
Slave
tCH
9
12.5
ns
Clock (SCLK) low time
Master
Slave
tCL
12
12.5
ns
Data set-up time required for inputs
Master
Slave
tDS
10
2
ns
Data hold time required for inputs
Master
Slave
tDH
0
2
ns
Access time (time to data active from high-impedance state)
Slave
tA
515
ns
Disable time (hold time to high-impedance state)
Slave
tD
29
ns
Data valid for outputs
Master
Slave (after enable edge)
tDV
2
14
ns
Data invalid
Master
Slave
tDI
0
ns
Rise time
Master
Slave
tR
11.5
10.0
ns
Fall time
Master
Slave
tF
9.7
9.0
ns
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