參數(shù)資料
型號(hào): MPC8540VTAQFC
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 19/104頁(yè)
文件大小: 0K
描述: MPU POWERQUICC III 783FCPBGA
標(biāo)準(zhǔn)包裝: 36
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 1.0GHz
電壓: 1.3V
安裝類型: 表面貼裝
封裝/外殼: 784-BBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 783-FCPBGA(29x29)
包裝: 托盤
MPC8540 Integrated Processor Hardware Specifications, Rev. 4.1
Freescale Semiconductor
21
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 19 provides the DC electrical characteristics for the DUART interface of the MPC8540.
7.2 DUART AC Electrical Specifications
Table 20 provides the AC timing parameters for the DUART interface of the MPC8540.
Table 19. 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 = –100 μA)
VOH
OVDD – 0.2
V
Low-level output voltage
(OVDD = min, IOL = 100 μA)
VOL
—0.2
V
Note:
1.Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1
Table 20. DUART AC Timing Specifications
Parameter
Value
Unit
Notes
Minimum baud rate
fCCB_CLK / 1048576
baud
3
Maximum baud rate
fCCB_CLK / 16
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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