MPC8347ECVRADDB datasheet(51/99 Pages) FREESCALE

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MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 12

Freescale Semiconductor

GPIO

14.2

Timer AC Timing Specifications

Table 48 provides the timer input and output AC timing specifications.

15 GPIO

This section describes the DC and AC electrical specifications for the GPIO.

15.1

GPIO DC Electrical Characteristics

Table 49 provides the DC electrical characteristics for the MPC8347EA GPIO.

15.2

GPIO AC Timing Specifications

Table 50 provides the GPIO input and output AC timing specifications.

Table 48. Timers Input AC Timing Specifications1

Parameter

Symbol2

Min

Unit

Timers inputs—minimum pulse width

tTIWID

Notes:

1. Input specifications are measured from the 50 percent level of the signal to the 50 percent level of the rising edge of CLKIN.

Timings are measured at the pin.

2. Timer inputs and outputs are asynchronous to any visible clock. Timer outputs should be synchronized before use by external

synchronous logic. Timer inputs are required to be valid for at least tTIWID ns to ensure proper operation.

Table 49. GPIO DC Electrical Characteristics

PArameter

Symbol

Condition

Min

Max

Unit

Input high voltage

VIH

—2.0

OVDD +0.3

Input low voltage

VIL

—–0.3

0.8

Input current

IIN

——

±5

μA

Output high voltage

VOH

IOH = –8.0 mA

2.4

—

Output low voltage

VOL

IOL = 8.0 mA

—

0.5

Output low voltage

VOL

IOL = 3.2 mA

—

0.4

Table 50. GPIO Input AC Timing Specifications1

Parameter

Symbol2

Min

Unit

GPIO inputs—minimum pulse width

tPIWID

Notes:

1. Input specifications are measured from the 50 percent level of the signal to the 50 percent level of the rising edge of CLKIN.

Timings are measured at the pin.

2. GPIO inputs and outputs are asynchronous to any visible clock. GPIO outputs should be synchronized before use by external

synchronous logic. GPIO inputs must be valid for at least tPIWID ns to ensure proper operation.

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