TMS370CX4X Datasheet, PDF (52/66 Pages) Texas Instruments – 8-BIT MICROCONTROLLER

TMS370Cx4x
8-BIT MICROCONTROLLER
SPNS016C – NOVEMBER 1992 – REVISED FEBRUARY 1997
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:
A
AR
B
CI
D
PGM
Address
Array
Byte
XTAL2/CLKIN
Data
Program
R
RXD
SC
SCC
TXD
W
Read
SCIRXD
SYSCLK
SCICLK
SCITXD
Write
Lowercase subscripts and their meanings are:
c
cycle time (period)
r
d
delay time
su
f
fall time
v
h
hold time
w
The following additional letters are used with these meanings:
H
High
V
L
Low
Z
rise time
setup time
valid time
pulse duration (width)
Valid
High Impedance
All timings are measured between high and low measurement points as indicated in the figures below.
0.8 VCC V (High)
0.8 V (Low)
XTAL2/CLKIN Measurement Points
2 V (High)
0.8 V (Low)
General Measurement Points
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