TMS320LC2402APGS datasheet(79/134 Pages) TI1

79 / 134 page

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A

TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A

DSP CONTROLLERS

SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251−1443

Input transition times are specified as follows:

D For a high-to-low transition on an input signal, the level at which the input is said to be no longer high is 90%

of the total voltage range and lower and the level at which the input is said to be low is 10% of the total voltage

range and lower.

D For a low-to-high transition on an input signal, the level at which the input is said to be no longer low is 10%

of the total voltage range and higher and the level at which the input is said to be high is 90% of the total

voltage range and higher.

PARAMETER MEASUREMENT INFORMATION

timing parameter symbology

Timing parameter symbols used are created in accordance with JEDEC Standard 100. To shorten the symbols,

some of the pin names and other related terminology have been abbreviated as follows:

A[15:0]

Memory strobe pins IS, DS, or PS

XTAL1/CLKIN

READY

CLKOUT

Read cycle or RD

D[15:0]

RESET pin RS

INT

XINT1, XINT2

Write cycle or WE

Lowercase subscripts and their meanings:

Letters and symbols and their meanings:

access time

High

cycle time (period)

Low

delay time

Valid

fall time

Unknown, changing, or don’t care level

hold time

High impedance

rise time

setup time

transition time

valid time

pulse duration (width)

general notes on timing

All output signals from the 240xA devices (including CLKOUT) are derived from an internal clock such that all

output transitions for a given half-cycle occur with a minimum of skewing relative to each other.

The signal combinations shown in the following timing diagrams may not necessarily represent actual cycles.

For actual cycle examples, see the appropriate cycle description section of this data sheet.

TMS320LC2402APGS 데이터시트(PDF) 79 Page - Texas Instruments

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