MPC8569E datasheet(98/127 Pages) FREESCALE

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MPC8569E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1

GPIO

Freescale Semiconductor

2.13

GPIO

This section describes the DC and AC electrical characteristics for the GPIO interface.

2.13.1

GPIO DC Electrical Characteristics

The following table provides the DC electrical characteristics for the GPIO interface when operating from a 3.3 V supply

2.13.2

GPIO AC Timing Specifications

The following table provides the GPIO input and output AC timing specifications.

The following figure provides the AC test load for the GPIO.

Figure 51. GPIO AC Test Load

Table 59. GPIO DC Electrical Characteristics (3.3 V)

For recommended operating conditions, see Table 3

Parameter

Symbol

Min

Max

Unit

Notes

Input high voltage

VIH

2—

Input low voltage

VIL

—0.8

Input current (OVIN = 0 V or OVIN = OVDD)

IIN

—±40

μA2

Output high voltage (OVDD = min, IOH = –2 mA)

VOH

2.4

—

Output low voltage (OVDD = min, IOL = 2 mA)

VOL

—0.4

—

Note:

1. The min VILand max VIH values are based on the min and max OVIN respective values found in Table 3.

2. The symbol OVIN represents the input voltage of the supply. It is referenced in Table 3.

Table 60. GPIO Input AC Timing Specifications

For recommended operating conditions, see Table 3

Parameter

Symbol

Min

Unit

Notes

GPIO inputs—minimum pulse width

tPIWID

Notes:

1. GPIO inputs and outputs are asynchronous to any visible clock. GPIO outputs must be synchronized before use by any

external synchronous logic. GPIO inputs are required to be valid for at least tPIWID to ensure proper operation.

Output

Z0 = 50 Ω

OVDD/2

RL = 50 Ω

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