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DS1075M-80

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
DS1075
13 of 18
READ/WRITE TIME SLOTS
The definitions of write and read time slots are illustrated below. All time slots are initiated by the master
driving the data line low. The falling edge of the data line synchronizes the DS1075 to the master by
triggering a delay circuit in the DS1075. During write time slots, the delay circuit determines when the
DS1075 will sample the data line. For a read data time slot, if a “0” is to be transmitted, the delay circuit
determines how long the DS1075 will hold the data line low overriding the 1 generated by the master. If
the data bit is a “1”, the DS1075 will leave the read data time slot unchanged.
WRITE “1” TIME SLOT Figure 14
WRITE “0” TIME SLOT Figure 15
DS1075
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READ DATA TIME SLOT Figure 16
RETURN TO NORMAL OPERATION
When programming is complete the DS1075 should be powered down. If the pullup resistor on the
IN/OUT pin is removed, normal device operation will be restored next time power is applied.
DEFAULT REGISTER VALUES
Unless ordered from the factory with specific register program values, the DS1075 is shipped with the
following default register values:
DIV = 0 0000 0000 (Programmable divider will divide by two)
MUX = 0 0011 0100
OUT0 Disabled
Power-Down Enabled, Select Disabled
M = 4 (Ignored, see MSEL )
MSEL = 1 (M prescaler bypassed)
DIV1 = 0 (N Dividers enabled)
E/ I = 0 (Internal oscillator selected)
DS1075
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ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground -1.0V to +7.0V
Operating Temperature 0°C to 70°C
Storage Temperature -55°C to +125°C
Soldering Temperature 260°C for 10 seconds
* This is a stress rating only and functional operation of the device at these or any other conditions above
those indicated in the operation sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect reliability.
DC ELECTRICAL CHARACTERISTICS (T
A
= 0°C to 70°C, V
CC
= 5V + 5%)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES
Supply Voltage V
CC
4.75 5 5.25 V
High-level Output
Voltage
(IN/OUT, OUT0)
V
OH
I
OH
= -4 mA,
V
CC
= MIN
2.4 V
Low-level Output
Voltage
(IN/OUT, OUT0)
V
OL
I
OL
= 4 mA 0.4 V
High-level Input Voltage
( PDN / SELX , OE,
IN/OUT)(OSCIN)
V
IH
V
IH
2
3
V
V
Low-level Input
Voltage( PDN / SELX ,
OE, IN/OUT)(OSCIN)
V
IL
V
IL
0.8
2
V
V
High-level Input Current
( PDN / SELX , OE,
IN/OUT)(OSCIN)
I
IH
I
IH
V
IH
=2.4V, V
CC
=
5.25V V
IH
=V
CC
=5.25V
125
uA
uA
Low-level Input Current
( PDN / SELX , OE,
IN/OUT)(OSCIN)
I
IL
I
IL
V
IL
=0,V
CC
=
5.25V V
IL
=0,V
CC
=5.25V
-1
-25
uA
uA
Supply Current (Active)
DS1075-100
DS1075-80
DS1075-66
DS1075-60
I
CC
C
L
= 15 pF
(both outputs)
35 50 mA
Standby Current
(power-down)
I
CCQ
Power-down
Mode
0.8 uA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

DS1075M-80

Mfr. #:
Buy DS1075M-80
Manufacturer:
Maxim Integrated
Description:
Programmable Oscillators
Lifecycle:
New from this manufacturer.
Delivery:
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