MPC8568E datasheet(89/139 Pages) FREESCALE

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MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

Timers

16 Timers

This section describes the DC and AC electrical specifications for the timers of the MPC8568E.

16.1

Timers DC Electrical Characteristics

Table 65 provides the DC electrical characteristics for the MPC8568E timers pins, including TIN, TOUT,

TGATE and RTC_CLK.

16.2

Timers AC Timing Specifications

Table 66 provides the timers input and output AC timing specifications.

Figure 56 provides the AC test load for the timers.

Figure 56. Timers AC Test Load

Table 65. Timers DC Electrical Characteristics

Characteristic

Symbol

Condition

Min

Max

Unit

Output high voltage

VOH

IOH = –6.0 mA

2.4

—

Output low voltage

VOL

IOL = 6.0 mA

—

0.5

Output low voltage

VOL

IOL = 3.2 mA

—

0.4

Input high voltage

VIH

—2.0

OVDD+0.3

Input low voltage

VIL

—-0.3

0.8

Input current

IIN

0 V

≤ VIN ≤ OVDD

—

± 10

μA

Table 66. Timers Input AC Timing Specifications 1

Characteristic

Symbol 2

Typ

Unit

Timers inputs—minimum pulse width

tTIWID

Notes:

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

MPC8568E Datenblatt(PDF) 89 Page - Freescale Semiconductor, Inc

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