参数资料
型号: MPC8308VMAGDA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: RISC MICROCONTROLLER, PBGA473
封装: 19 X 19 MM, 1.39 MM HEIGHT, 0.80 MM PITCH, LEAD FREE, PLASTIC, MABGA-473
文件页数: 7/90页
文件大小: 1123K
代理商: MPC8308VMAGDA
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 2
Freescale Semiconductor
15
DUART
Figure 7 provides the AC test load for the DDR2 bus.
Figure 7. DDR2 AC Test Load
7DUART
This section describes the DC and AC electrical specifications for the DUART interface.
7.1
DUART DC Electrical Characteristics
Table 19 provides the DC electrical characteristics for the DUART interface.
7.2
DUART AC Electrical Specifications
Table 20 provides the AC timing parameters for the DUART interface.
8
Ethernet: Three-Speed Ethernet, MII Management
This section provides the AC and DC electrical characteristics for three-speed, 10/100/1000, and MII
management. MPC8308 supports dual Ethernet controllers.
Table 19. DUART DC Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
High-level input voltage
VIH
2.1
NVDD + 0.3
V
Low-level input voltage NVDD
VIL
–0.3
0.8
V
High-level output voltage, IOH = –100 μAVOH
NVDD – 0.2
V
Low-level output voltage, IOL = 100 μAVOL
—0.2
V
Input current (0 V
≤VIN ≤ NVDD)IIN
—± 5
μA
Table 20. DUART AC Timing Specifications
Parameter
Value
Unit
Notes
Minimum baud rate
256
baud
Maximum baud rate
> 1,000,000
baud
1
Oversample rate
16
2
Notes:
1. Actual attainable baud rate is 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.
Output
Z0 = 50 Ω
RL = 50 Ω
GVDD/2
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