参数资料
型号: MPC8309VMADDCA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 266 MHz, RISC PROCESSOR, PBGA489
封装: 19 X 19 MM, 1.61 MM HEIGHT, 0.80 MM PITCH, LEAD FREE, PLASTIC, MAPBGA-489
文件页数: 32/81页
文件大小: 484K
代理商: MPC8309VMADDCA
MPC8309 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 1
38
Freescale Semiconductor
DUART
13 DUART
This section describes the DC and AC electrical specifications for the DUART interface of the MPC8309.
13.1
DUART DC Electrical Characteristics
The following table provides the DC electrical characteristics for the DUART interface of the MPC8309.
13.2
DUART AC Electrical Specifications
The following table provides the AC timing parameters for the DUART interface of the MPC8309.
Table 37. DUART DC Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
High-level input voltage
VIH
2OVDD +0.3
V
Low-level input voltage OVDD
VIL
–0.3
0.8
V
High-level output voltage, IOH = –100 AVOH
OVDD –0.2
V
Low-level output voltage, IOL = 100 AVOL
—0.2
V
Input current (0 V
VIN OVDD)1
IIN
—±5
A
Note:
1. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.
Table 38. DUART AC Timing Specifications
Parameter
Value
Unit
Note
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.
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