MPC8308VMAFDA datasheet(58/88 Pages) FREESCALE

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MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 0

Freescale Semiconductor

Timers

16 Timers

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

16.1

Timers DC Electrical Characteristics

Table 45 provides the DC electrical characteristics for the MPC8308 timers pins, including TIN, TOUT,

and TGATE.

16.2

Timers AC Timing Specifications

Table 46 provides the Timers input and output AC timing specifications.

Figure 47 provides the AC test load for the Timers.

Figure 47. Timers AC Test Load

Table 45. Timers DC Electrical Characteristics

Characteristic

Symbol

Condition

Min

Max

Unit

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

Input high voltage

VIH

—2.1

NVDD +0.3

Input low voltage

VIL

—–0.3

0.8

Input current

IIN

0 V

≤ V

IN ≤ NVDD

—

± 5

μA

Table 46. Timers Input AC Timing Specifications

Characteristic

Symbol1

Min

Unit

Timers inputs—minimum pulse width

tTIWID

Notes:

1. 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

NVDD/2

RL = 50 Ω

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