參數(shù)資料
型號: MCF5327
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Microprocessor Data Sheet
中文描述: 微處理器數(shù)據(jù)表
文件頁數(shù): 19/48頁
文件大?。?/td> 922K
代理商: MCF5327
Preliminary Electrical Characteristics
MCF5329 ColdFire
Microprocessor Data Sheet, Rev. 0.1
Preliminary
Freescale Semiconductor
19
Figure 6. USB V
DD
Power Filter
NOTE
In addition to the above filter circuitry, a 0.01 F capacitor is also
recommended in parallel with those shown.
5.4.3
Supply Voltage Sequencing and Separation Cautions
Figure 7
shows situations in sequencing the I/O V
DD
(EV
DD
), SDRAM V
DD
(SDV
DD
), PLL V
DD
(PLLV
DD
), and Core V
DD
(IV
DD
).
Figure 7. Supply Voltage Sequencing and Separation Cautions
The relationship between SDV
DD
and EV
DD
is non-critical during power-up and power-down sequences.
Both SDV
DD
(2.5V or 3.3V) and EV
DD
are specified relative to IV
DD
.
Board EV
DD
/IV
DD
0
0.1 μF
USB V
DD
Pin
10 μF
GND
SDV
DD
(2.5V/1.8V)
Supplies Stable
2
1
3.3V
2.5V
1.5V
0
Time
Notes:
1.
IVDD should not exceed EVDD, SDVDD or PLLVDD by more than
0.4 V at any time, including power-up.
Recommended that IVDD/PLLVDD should track EVDD/SDVDD up to
0.9 V, then separate for completion of ramps.
Input voltage must not be greater than the supply voltage (EVDD, SDVDD,
IVDD, or PLLVDD) by more than 0.5 V at any time, including during power-up.
Use 1 ms or slower rise time for all supplies.
2.
3.
4.
D
IV
DD
, PLLV
DD
EV
DD
, SDV
DD
, USBV
DD
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