參數(shù)資料
型號(hào): MPC8545EVTAQGB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 1000 MHz, MICROPROCESSOR, PBGA783
封裝: 29 X 29 MM, 1 MM PITCH, FLIP CHIP, LEAD FREE, PLASTIC, BGA-783
文件頁數(shù): 61/142頁
文件大?。?/td> 1504K
代理商: MPC8545EVTAQGB
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
25
DUART
7DUART
This section describes the DC and AC electrical specifications for the DUART interface of the
MPC8548E.
7.1
DUART DC Electrical Characteristics
Table 20 provides the DC electrical characteristics for the DUART interface.
7.2
DUART AC Electrical Specifications
Table 21 provides the AC timing parameters for the DUART interface.
Table 20. DUART DC Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
High-level input voltage
VIH
2OVDD + 0.3
V
Low-level input voltage
VIL
–0.3
0.8
V
Input current (VIN
1 = 0 V or V
IN = VDD)
IIN
—±5
μA
High-level output voltage (OVDD = min, IOH = –2 mA)
VOH
2.4
V
Low-level output voltage (OVDD = min, IOL = 2 mA)
VOL
—0.4
V
Note:
1. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.
Table 21. DUART AC Timing Specifications
Parameter
Value
Unit
Notes
Minimum baud rate
fCCB/1,048,576
baud
1, 2
Maximum baud rate
fCCB/16
baud
1, 2, 3
Oversample rate
16
1, 4
Notes:
1. Guaranteed by design.
2. fCCB refers to the internal platform clock.
3. Actual attainable baud rate will be limited by the latency of interrupt processing.
4. The middle of a start bit is detected as the 8th sampled 0 after the 1-to-0 transition of the start bit. Subsequent bit values are
sampled each 16th sample.
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