MPC8306SEC datasheet(33/70 Pages) FREESCALE

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MPC8306S PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 1

Freescale Semiconductor

DUART

12 DUART

This section describes the DC and AC electrical specifications for the DUART interface of the MPC8306S.

12.1

DUART DC Electrical Characteristics

The following table provides the DC electrical characteristics for the DUART interface of the MPC8306S.

12.2

DUART AC Electrical Specifications

The following table provides the AC timing parameters for the DUART interface of the MPC8306S.

Table 32. DUART DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

High-level input voltage

VIH

2OVDD +0.3

Low-level input voltage OVDD

VIL

–0.3

0.8

High-level output voltage, IOH = –100 AVOH

OVDD –0.2

—

Low-level output voltage, IOL = 100 AVOL

—0.2

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 33. DUART AC Timing Specifications

Parameter

Value

Unit

Note

Minimum baud rate

256

baud

—

Maximum baud rate

>1,000,000

baud

Oversample rate

—

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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