DS1075Z-801 Maxim Integrated Products, DS1075Z-801 Datasheet
DS1075Z-801
Specifications of DS1075Z-801
Related parts for DS1075Z-801
DS1075Z-801 Summary of contents
Page 1
... The DS1075 is available in 8-pin DIP or SOIC packages, allowing the generation of a clock signal easily, economically and using minimal board area. EconOscillator/Divider PIN ASSIGNMENT 1 I/O 2 OUT0 GND DS1075Z 150-MIL SOIC DS1075M 300-MIL DIP FREQUENCY OPTIONS Part No. DS1075-100 DS1075-80 DS1075-66 DS1075- DS1075 8 OSCIN 7 ...
Page 2
BLOCK DIAGRAM Figure 1 PART INTOSC NO. FREQUENCY SUFFIX -100 100.000 MHz 080 80.000 MHz -66 66.667 MHz -60 60.000 MHz ...
Page 3
PIN DESCRIPTIONS Input/Output Pin (IN/OUT): This pin is the main oscillator output, with a frequency determined by clock reference, M and N dividers. Except in programming mode this pin is always an output and will be referred to as “OUT”. ...
Page 4
The register settings are nonvolatile, the values being stored automatically in EEPROM when the registers are programmed. Note: The register bits cannot be used to make mode or frequency changes on the fly. ...
Page 5
Table 2 DIV1 E/ I MSEL BIT BIT* BIT *Assuming PDN bit = 1, otherwise internal/external selection will be controlled by the ...
Page 6
OPERATION OF OUTPUT ENABLE Since the output enable, internal master oscillator and/or external master oscillator are likely all asynchronous there is the possibility of timing difficulties in the application. difficulties the DS1075 features an “enabling sequencer” to produce predictable results ...
Page 7
Figure 5 Figure 6 SELECT TIMING If the PDN bit is set to “0”, the an externalor crystal reference. The “Enabling Sequencer” is again employed to ensure this transition occurs in a glitch-free fashion. Two asynchronous clock signals are involved, ...
Page 8
Figure 7 Depending on the relative timing of the cycle the output after the falling edge of I pulses will be dependent on the relative timing between t edge of and the first rising edge of the ...
Page 9
SELX and the first rising edge of the externally derived clock is t SIE . Approximate maximum and minimum values of these parameters are: t (min LOW I t (max ...
Page 10
Figure 9 POWER-ON RESET When power is initially applied to the device supply pin, a power-on reset sequence is executed, similar to that which occurs when the device is restored from a power-down condition. This sequence comprises two stages, first ...
Page 11
HARDWARE The hardware configuration is shown in the diagram. A bus master is used to read and write data to the DS1075’s internal registers. The bus master may have either an open-drain or TTL-type architecture. Figure 11 Programming mode is ...
Page 12
TRANSACTION SEQUENCE The sequence for accessing the DS1075 via the 1-Wire port is as follows: Initialization Function Command Transaction/Data INITIALIZATION All transactions on the 1-Wire bus begin with an initialization sequence. The initialization sequence consists of a reset pulse transmitted ...
Page 13
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 ...
Page 14
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 ...
Page 15
ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the ...
Page 16
AC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Output Frequency Tolerance Combined Freq. Variation Long Term Stability Maximum Input Frequency Minimum Output Frequency Power-Up Time Enable OUT from PDN ↑ Enable OUT0 from PDN ↑ OUT Hi-Z from PDN ↓ OUT0 Hi-Z from ...
Page 17
AC ELECTRICAL CHARACTERISTICS - CALCULATED PARAMETERS The following characteristic are derived from various device operating parameters (frequency, mode etc.). They are not specifically tested or guaranteed and may differ from the min and max limits shown by a small amount ...
Page 18
DATA SHEET REVISION SUMMARY The following represent the key differences between 11/16/97 and 05/01/97 version of the DS1075 data sheet. Please review this summary carefully. 1. Page 1, description, second paragraph. Word change 2. Page 14, AC electrical characteristic. Add ...