MPC8378E datasheet(76/128 Pages) FREESCALE

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MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 8

Freescale Semiconductor

17.2

GPIO AC Timing Specifications

This table provides the GPIO input and output AC timing specifications.

This figure provides the AC test load for the GPIO.

Figure 50. GPIO AC Test Load

18 IPIC

This section describes the DC and AC electrical specifications for the external interrupt pins of the chip.

18.1

IPIC DC Electrical Characteristics

This table provides the DC electrical characteristics for the external interrupt pins of the chip.

Table 62. GPIO Input AC Timing Specifications

Parameter

Symbol

Min

Unit

GPIO inputs—minimum pulse width

tPIWID

Notes:

1. Input specifications are measured from the 50% level of the signal to the 50% level of the rising edge of SYS_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 any

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

Table 63. IPIC DC Electrical Characteristics

Parameter

Condition

Symbol

Min

Max

Unit

Input high voltage

—

VIH

2.0

OVDD + 0.3

Input low voltage

—

VIL

–0.3

0.8

Input current

—

IIN

—±30

μA

Output low voltage

IOL = 6.0 mA

VOL

—0.5

Output low voltage

IOL = 3.2 mA

VOL

—0.4

Note:

1. This table applies for pins IRQ[0:7], IRQ_OUT, MCP_OUT.

2. IRQ_OUT and MCP_OUT are open drain pins, thus VOH is not relevant for those pins.

Output

Z0 = 50 Ω

OVDD/2

RL = 50 Ω

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