MPC8377E datasheet(72/124 Pages) FREESCALE

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MPC8377E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 2

Freescale Semiconductor

Timers

17 Timers

This section describes the DC and AC electrical specifications for the timers of the MPC8377E.

17.1

Timers DC Electrical Characteristics

Table 62 provides the DC electrical characteristics for the device timers pins, including TIN, TOUT,

TGATE, and RTC_CLK.

17.2

Timers AC Timing Specifications

Table 63 provides the timers input and output AC timing specifications.

Figure 46 provides the AC test load for the timers.

Figure 46. Timers AC Test Load

Table 62. Timers DC Electrical Characteristics

Parameter

Condition

Symbol

Min

Max

Unit

Output high voltage

IOH = –6.0 mA

VOH

2.4

—

Output low voltage

IOL = 6.0 mA

VOL

—0.5

Output low voltage

IOL = 3.2 mA

VOL

—0.4

Input high voltage

—

VIH

2.0

OVDD + 0.3

Input low voltage

—

VIL

–0.3

0.8

Input current

0 V

≤ VIN ≤ OVDD

IIN

—

± 30

μA

Table 63. Timers Input AC Timing Specifications 1

Parameter

Symbol 2

Min

Unit

Timers inputs—minimum pulse width

tTIWID

Note:

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

measured at the pin.

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

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

Output

Z0 = 50 Ω

OVDD/2

RL = 50 Ω

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