參數(shù)資料
型號(hào): MPC8540PXALDB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 667 MHz, MICROPROCESSOR, PBGA783
封裝: 29 X 29 MM, 3.75 MM HEIGHT, 1 MM PITCH, FLIP CHIP, PLASTIC, BGA-783
文件頁(yè)數(shù): 20/104頁(yè)
文件大?。?/td> 2133K
代理商: MPC8540PXALDB
MPC8540 Integrated Processor Hardware Specifications, Rev. 3.1
22
Freescale Semiconductor
DUART
7
DUART
This section describes the DC and AC electrical specifications for the DUART interface of the MPC8540.
7.1 DUART DC Electrical Characteristics
Table 18 provides the DC electrical characteristics for the DUART interface of the MPC8540.
7.2 DUART AC Electrical Specifications
Table 19 provides the AC timing parameters for the DUART interface of the MPC8540.
Table 18. DUART DC Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
High-level input voltage
VIH
2
OVDD + 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
A
High-level output voltage
(OVDD = min, IOH = –100 A)
VOH
OVDD – 0.2
V
Low-level output voltage
(OVDD = min, IOL = 100 A)
VOL
0.2
V
Note:
1.Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1
Table 19. DUART AC Timing Specifications
Parameter
Value
Unit
Notes
Minimum baud rate
256
baud
3
Maximum baud rate
> 1,000,000
baud
1, 3
Oversample rate
16
2, 3
Notes:
1.Actual attainable baud rate will be limited by the latency of interrupt processing.
2.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.
3.Guaranteed by design.
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