參數(shù)資料
型號: DSP56F803BU80
廠商: Freescale Semiconductor
文件頁數(shù): 24/52頁
文件大小: 0K
描述: IC DSP 80MHZ 64KB FLASH 100LQFP
標準包裝: 90
系列: 56F8xx
核心處理器: 56800
芯體尺寸: 16-位
速度: 80MHz
連通性: CAN,EBI/EMI,SCI,SPI
外圍設備: POR,PWM,WDT
輸入/輸出數(shù): 16
程序存儲器容量: 71KB(35.5K x 16)
程序存儲器類型: 閃存
RAM 容量: 2.5K x 16
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x12b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-LQFP
包裝: 托盤
56F803 Technical Data, Rev. 16
30
Freescale Semiconductor
3.5.4
Phase Locked Loop Timing
3.6 External Bus Asynchronous Timing
Table 3-9 PLL Timing
Operating Conditions: V
SS = VSSA = 0 V, VDD = VDDA = 3.0–3.6 V, TA = –40° to +85°C
Characteristic
Symbol
Min
Typ
Max
Unit
External reference crystal frequency for the PLL1
1.
An externally supplied reference clock should be as free as possible from any phase jitter for the PLL to work
correctly. The PLL is optimized for 8MHz input crystal.
2.
ZCLK may not exceed 80MHz. For additional information on ZCLK and fout/2, please refer to the OCCS chapter in the
User Manual. ZCLK = fop
3.
This is the minimum time required after the PLL set-up is changed to ensure reliable operation.
fosc
48
10
MHz
PLL output frequency 2
fout/2
40
110
MHz
PLL stabilization time 3 0o to +85oC
tplls
—1
10
ms
PLL stabilization time3 -40o to 0oC
tplls
100
200
ms
Table 3-10 External Bus Asynchronous Timing1, 2
Operating Conditions: V
SS = VSSA = 0 V, VDD = VDDA = 3.0–3.6 V, TA = –40° to +85°C, CL 50pF, fop = 80MHz
Characteristic
Symbol
Min
Max
Unit
Address Valid to WR Asserted
tAWR
6.5
ns
WR Width Asserted
Wait states = 0
Wait states > 0
tWR
7.5
(T*WS) + 7.5
ns
WR Asserted to D0–D15 Out Valid
tWRD
—4.2
ns
Data Out Hold Time from WR Deasserted
tDOH
4.8
ns
Data Out Set Up Time to WR Deasserted
Wait states = 0
Wait states > 0
tDOS
2.2
(T*WS) + 6.4
ns
RD Deasserted to Address Not Valid
tRDA
0—
ns
Address Valid to RD Deasserted
Wait states = 0
Wait states > 0
tARDD
18.7
(T*WS) + 18.7
ns
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