UMA1017M Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
UMA1017M Datasheet PDF : 16 Pages
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Philips Semiconductors
Low-voltage frequency synthesizer
for radio telephones
Product specification
UMA1017M
SERIAL BUS TIMING CHARACTERISTICS
VDD = VCC = 3 V; Tamb = 25 °C unless otherwise specified.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
Serial programming clock; CLK
tr
input rise time
tf
input fall time
Tcy
clock period
Enable programming; E
tSTART
tEND
tW
tSU;E
delay to rising clock edge
delay from last falling clock edge
minimum inactive pulse width
enable set-up time to next clock edge
Register serial input data; DATA
tSU;DAT
tHD;DAT
input data to clock set-up time
input data to clock hold time
−
10
40
ns
−
10
40
ns
100
−
−
ns
40
−
−
ns
−20
−
−
ns
4 000(1)
−
−
ns
20
−
−
ns
20
−
−
ns
20
−
−
ns
Note
1. The minimum pulse width (tW) can be smaller than 4 µs provided all the following conditions are satisfied:
a) Main divider input frequency fVCO > 2--t--5W---6--
b) Reference divider input frequency fXTAL > t--3W---
1995 Jul 10
Fig.3 Serial bus timing diagram.
10
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