max9485 Maxim Integrated Products, Inc., max9485 Datasheet - Page 4

• Manufacturer Part Number: max9485
• Description: Max9485 Programmable Audio Clock Generator
• Manufacturer: Maxim Integrated Products, Inc.

Programmable Audio Clock Generator
I
(V
Figure 7.) (Note 1)
Note 1: All parameters tested at T
Note 2: When X1 is used as an external reference.
Note 3: Guaranteed by design and characterization; limits are set at ±6 sigma.
Note 4: Includes crystal accuracy.
Note 5: F
Note 6: See frequency selection paragraph in the Applications Information section.
Note 7: A master device must provide a hold time of at least 300ns for the SDA signal (referred to V
Note 8: C
Note 9: Bus sink current is less than 6mA. C
Note 10: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns.
4
2
Serial Clock
Bus Free Time Between a STOP and
a START Condition
Hold Time (Repeated) START
Condition
Repeated START Condition Setup
Time
STOP Condition Setup Time
Data Hold Time
Data Setup Time
SCL Clock Low Period
SCL Clock High Period
Ri se Ti m e of S D A and S C L, Recei vi ng
Fall Time of SDA and SCL, Receiving
Fall Time of SDA, Transmitting
Pulse Width of Spike Suppressed
Capacitive Load for Each Bus Line
DD
C TIMING CHARACTERISTICS
_______________________________________________________________________________________
= V
DD_P
bridge the undefined region of SCL’s falling edge.
0.7 V
XTL
b
PARAMETER
= total capacitance of one bus line in pF. t
= 3.0V to 3.6V, T
DD
= 27MHz. Nominal frequency.
.
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C. Specifications over temperature are guaranteed by design and characterization.
SYMBOL
t
t
t
t
t
HD, STA
SU, STO
SU, STA
HD,DAT
SU,DAT
t
t
t
f
HIGH
LOW
BUF
t
SCL
C
t
SP
b
t
t
R
F
F
b
= total capacitance of one bus line in pF. t
(Note 7)
(Notes 3, 8)
(Notes 3, 8)
(Notes 8, 9)
(Notes 3, 10)
R
and t
F
measured between 0.3 V
CONDITIONS
DD
R
and t
and 0.7 V
20 + 0.1Cb
20 + 0.1Cb
20 + 0.1Cb
F
MIN
0.05
100
1.3
0.6
0.6
0.6
1.3
0.6
measured between 0.3 V
0
A
IL
= +25°C, V
DD
of the SCL signal) in order to
.
TYP
DD
MAX
400
300
300
250
400
= V
0.9
50
DD
_
DD
P
UNITS
= 3.3V;
kHz
and
pF
µs
µs
µs
µs
µs
ns
µs
µs
ns
ns
ns
ns