UMA1015AM Datasheet, PDF (10/24 Pages) NXP Semiconductors – Low-power dual frequency synthesizer for radio communications

Philips Semiconductors
Low-power dual frequency synthesizer
for radio communications
SERIAL TIMING CHARACTERISTICS
V_DD1 = 3 V; T_amb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
Serial programming clock; CLK
t_r, t_f
input rise and fall times
T_cy
clock period
Enable programming; E
t_START
t_END
t_W
t_SU;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
t_SU;DAT
t_HD;DAT
input data to clock set-up time
input data to clock hold time
Product specification
UMA1015AM
MIN.
TYP.
MAX.
UNIT
−
10
40
ns
100
−
−
ns
40
−
−
ns
−20
−
−
ns
4 000
−
−
ns
20
−
−
ns
20
−
−
ns
20
−
−
ns
handbook, full pagewidth
tSU;DAT
tHD;DAT
Tcy
CLK
DATA
MSB
E
tSTART
tf
tr
tEND
tSU;E
LSB
ADDRESS
MGG524
tW
Fig.3 Serial bus timing diagram.
1997 Sep 03
10