DS1085Z-50 Maxim Integrated Products, DS1085Z-50 Datasheet - Page 18

• Manufacturer Part Number: DS1085Z-50
• Description: Timers & Support Products EconOscillator Frequ requency Synthesizer
• Manufacturer: Maxim Integrated Products

AC ELECTRICAL CHARACTERISTICS: 2-WIRE INTERFACE
SCL Clock Frequency
Bus Free Time Between
a STOP and START
Condition
Hold Time (Repeated)
START Condition
LOW Period of SCL
HIGH Period of SCL
Setup Time for a
Repeated START
Data Hold Time
Data Setup Time
Rise Time of Both SDA
and SCL Signals
Fall Time of Both SDA
and SCL Signals
Setup Time for STOP
Capacitive Load for
each Bus Line
NV Write-Cycle Time
NOTES:
1) All voltages are referenced to ground.
2) This is the absolute accuracy of the master oscillator frequency at the default settings.
3) This is the percent frequency change that is observed in output frequency with changes in voltage
4) This is the percentage frequency change from the +25°C frequency due to temperature at a nominal
5) The maximum temperature change varies with the master frequency setting. The minimum occurs at
6) The integral nonlinearity of the frequency adjust DAC is a measure of the deviation from a straight
7) DAC and OFFSET register settings must be configured to maintain the clock frequency within this
8) Frequency settles faster for small charges in value. During a change, the frequency changes smoothly
from nominal voltage at a temperature of T
voltage of 5V.
the default master frequency (f
frequency range (66MHz or 133MHz). (See Figure 5 below.)
line drawn between the two endpoints of a range.
range. Correct operation of the device is not guaranteed if these limits are exceeded.
from the original value to the new value.
PARAMETER
SYMBOL
t
t
t
t
t
HD:DAT
HD:STA
SU:DAT
SU:STA
SU:STO
t
t
f
t
HIGH
t
LOW
C
BUF
SCL
WR
t
t
R
F
B
default
). The maximums occur at the extremes of the master oscillator
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
CONDITION
A
= +25°C.
18 of 21
0.1C
0.1C
(V
MIN
20 +
20 +
100
250
1.3
4.7
0.6
4.0
1.3
4.7
0.6
4.0
0.6
4.7
0.6
4.0
0
0
CC
B
B
= 5V ±5%, T
TYP
MAX
1000
1000
400
100
300
300
400
0.9
10
A
= 0°C to +70°C.)
UNITS
kHz
ms
pF
ms
ms
ms
ms
ms
ms
ms
ns
ns
ns
NOTES
12, 13
14
11
14
15
15
15
16