參數(shù)資料
型號: MC56F8123VFBE
廠商: Freescale Semiconductor
文件頁數(shù): 19/140頁
文件大?。?/td> 0K
描述: IC DSP 16BIT 40MHZ 64-LQFP
標準包裝: 160
系列: 56F8xxx
核心處理器: 56800E
芯體尺寸: 16-位
速度: 40MHz
連通性: SCI,SPI
外圍設備: POR,WDT
輸入/輸出數(shù): 27
程序存儲器容量: 32KB(16K x 16)
程序存儲器類型: 閃存
RAM 容量: 8K x 8
電壓 - 電源 (Vcc/Vdd): 2.25 V ~ 3.6 V
數(shù)據(jù)轉換器: A/D 8x12b
振蕩器型: 內部
工作溫度: -40°C ~ 105°C
封裝/外殼: 64-LQFP
包裝: 托盤
產品目錄頁面: 734 (CN2011-ZH PDF)
Phase Locked Loop Timing
56F8323 Technical Data, Rev. 17
Freescale Semiconductor
115
Preliminary
Figure 10-3 External Clock Timing
10.6 Phase Locked Loop Timing
10.7 Crystal Oscillator Parameters
Table 10-14 PLL Timing
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.
fosc
48
8.4
MHz
PLL output frequency2 (fOUT)—56F8323
2. ZCLK may not exceed 60MHz. For additional information on ZCLK and (fOUT/2), please refer to the OCCS chapter in
the 56F8300 Peripheral User Manual.
fop
160
260
MHz
PLL output frequency2 (fOUT)—56F8123
fop
160
160
MHz
PLL stabilization time3 -40
° to +125°C
3. This is the minimum time required after the PLL set up is changed to ensure reliable operation.
tplls
—1
10
ms
Table 10-15 Crystal Oscillator Parameters
Characteristic
Symbol
Min
Typ
Max
Unit
Crystal Start-up time
TCS
4510
ms
Resonator Start-up time
TRS
0.1
0.18
1
ms
Crystal ESR
RESR
——120
ohms
Crystal Peak-to-Peak Jitter
TD
70
250
ps
Crystal Min-Max Period Variation
TPV
0.12
1.5
ns
Resonator Peak-to-Peak Jitter
TRJ
——300
ps
External
Clock
VIH
VIL
Note: The midpoint is VIL + (VIH – VIL)/2.
90%
50%
10%
90%
50%
10%
tPW
tfall
trise
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