TMS77C82 datasheet(46/60 Pages) TI

46 / 60 page

TMS370Cx2x

8-BIT MICROCONTROLLER

SPNS018C – FEBRUARY 1993 – REVISED FEBRUARY 1997

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

PARAMETER MEASUREMENT INFORMATION

timing parameter symbology

Timing parameter symbols have been created in accordance with JEDEC Standard 100. In order to shorten the

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

Array

Slave mode

Byte

SYSCLK

XTAL2/CLKIN

SIMO

SPISIMO

DATA

SOMI

SPISOMI

Master mode

SPC

SPICLK

PGM

Program

TXD

SCITXD

READ

WRITE

RXD

SCIRXD

Lowercase subscripts and their meanings are:

cycle time (period)

setup time

delay time

valid time

fall time

pulse duration (width)

rise time

The following additional letters are used with these meanings:

High

Low

Valid

All timings are measured between high and low measurement points as indicated in Figure 18 and Figure 19.

0.8 V (Low)

2 V (High)

0.8 V (Low)

0.8 VCC V (High)

Figure 18. XTAL2/CLKIN Measurement Points

Figure 19. General Measurement Points

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