DS1077LZ-60+T&R Maxim Integrated Products, DS1077LZ-60+T&R Datasheet

IC ECONOSCILLATOR/DIV 8-SOIC

DS1077LZ-60+T&R

Manufacturer Part Number
DS1077LZ-60+T&R
Description
IC ECONOSCILLATOR/DIV 8-SOIC
Manufacturer
Maxim Integrated Products
Series
EconOscillator™r
Type
Oscillator, Fixed Frequency, Dualr
Datasheet

Specifications of DS1077LZ-60+T&R

Frequency
60MHz
Voltage - Supply
2.7 V ~ 3.6 V
Current - Supply
25mA
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Count
-
FEATURES
§ Processor-controlled or stand-alone solid-
§ Frequency changes on the fly
§ Dual, low-jitter, synchronous fixed-
§ 2-wire serial interface
§ Frequency outputs 4.87kHz to 66.666MHz
§ ±0.5% initial tolerance
§ Nonvolatile frequency settings
§ Single 2.7V to 3.6V supply
§ No external components
§ Power-down mode
§ Synchronous output gating
STANDARD FREQUENCY OPTION
Note: x denotes package option
DS1077Lx-40
DS1077Lx-50
DS1077Lx-60
DS1077Lx-66
Contact the factory for the availability of
additional frequencies.
DESCRIPTION
The DS1077L is a dual-output, programmable, fixed-frequency oscillator requiring no external
components for operation. The DS1077L can be used as a processor-controlled frequency synthesizer or
as a stand-alone oscillator. The two synchronous output operating frequencies are user-adjustable in
submultiples of the master frequency through the use of two on-chip programmable prescalers and
dividers. The specific output frequencies chosen are stored in nonvolatile (EEPROM) memory. The
DS1077L defaults to these values upon power-up.
The DS1077L features a 2-wire serial interface that allows in-circuit on-the-fly programming of the
programmable prescalers (P0 & P1) and divider (N) with the desired values being stored in nonvolatile
(EEPROM) memory. Design changes can be accommodated in-circuit, on-the-fly by simply programming
different values into the device (or reprogramming previously programmed devices). Alternatively, for
fixed-frequency applications previously programmed devices can be used and no connection to the serial
interface is required. Preprogrammed devices can be ordered in customer-requested frequencies.
The DS1077L is available in SO or µSOP packages, allowing the generation of a clock signal easily,
economically, and using minimal board area. Chip-scale packaging is also available on request.
www.maxim-ic.com
state oscillator
frequency outputs
±1.25% variation over temperature and
voltage
40.000MHz to 4.87kHz
50.000MHz to 6.09kHz
60.000MHz to 7.32kHz
66.666MHz to 8.13kHz
1 of 21
PIN ASSIGNMENTS
PIN DESCRIPTIONS
OUT1
OUT0
V
GND
CTRL1
CTRL0
SDA
SCL
ORDERING INFORMATION
Note: XXX denotes frequency option
DS1077LZ-XXX
DS1077LU-XXX
CC
3V EconOscillator/Divider
OUT1
OUT0
GND
V
CC
118mil µSOP
- Reference Output
- Power-Supply Voltage
- Ground
- Control Pin for OUT1
- Control Pin for OUT0
- 2-Wire Serial Data
- 2-Wire Serial Clock
- Main Oscillator Output
150mil SO
Input/Output
1
2
3
4
8-pin 150mil SO
8-pin 118mil µSOP
8
7
6
5
SCL
SDA
CTRL1
CTRL0
DS1077L
011006

Related parts for DS1077LZ-60+T&R

DS1077LZ-60+T&R Summary of contents

Page 1

... CC GND - Ground CTRL1 - Control Pin for OUT1 CTRL0 - Control Pin for OUT0 SDA - 2-Wire Serial Data Input/Output SCL - 2-Wire Serial Clock ORDERING INFORMATION Note: XXX denotes frequency option DS1077LZ-XXX 8-pin 150mil SO DS1077LU-XXX 8-pin 118mil µSOP DS1077L 8 SCL 7 SDA 6 CTRL1 5 CTRL0 011006 ...

Page 2

BLOCK DIAGRAM DS1077L Figure 1 INTERNAL OSCILLATOR DIV1 0M1 0M0 1M1 1M0 EN0 SEL0 PDN0 PDN1 CONTROL REGISTERS 2-WIRE INTERFACE SDA SCL MCLK MUX P0 PRESCALER (M DIVIDER) 0M1 0M0 P1 PRESCALER (M DIVIDER) Power-Down 1M1 1M0 PDN1 2 of ...

Page 3

OVERVIEW A block diagram of the DS1077L is shown in Figure 1. The DS1077L consists of four major components: 1) internal master oscillator, 2) prescalers, 3) programmable divider, and 4) control registers. The internal oscillator is factory trimmed to provide ...

Page 4

TABLE 1 EN0 SEL0 PDN0 (BIT) (BIT) (BIT *This mode is for applications where OUT0 is not used, but CTRL0 is used ...

Page 5

TABLE 3 PDN0 PDN1 (BIT) (BIT *CTRL0 performs a power-down if SEL0 and EN0 are both 0. (See Table 1.) Serial Data Input/Output (SDA) – Input/output pin for the 2-wire serial interface ...

Page 6

EN0 (bit) If EN0 = 1 and PDN0 = 0, the CTRL0 pin functions as an output enable for OUT0, the frequency of the output is determined by the SEL0 bit. If PDN0 = 1, the EN0 bit is ignored, ...

Page 7

TABLE 5 BIT VALUE DIVISOR ( 000 000 000 001 — — — — 1 111 111 111 *Default Condition BUS WORD NAME — Factory Default 0* *These bits are reserved and must ...

Page 8

Accordingly, the following bus conditions have been defined: Bus not busy: Both data and clock lines remain high. Start data transfer: A change in the state of the data line from high to low while the clock is high defines ...

Page 9

Figure 2 details how data transfer is accomplished on the 2-wire bus. Depending upon the state of the R/W bit, two types of data transfer are possible: 1) Data transfer from a master transmitter to a slave receiver. The first ...

Page 10

SERIAL COMMUNICATION WITH DS1077L Figure 3 Send a “Standalone” Command SCL SDA Start Address Byte DS1077L Write MSB of a Two-Byte Register SCL SDA ...

Page 11

SERIAL COMMUNICATION WITH DS1077L Figure 3 (cont.) Read Single Byte Register or MSB from a Two-Byte Register SCL SDA Start Control Byte DS1077L ACK Read from a Two-Byte ...

Page 12

COMMAND SET Data and control information is read from and written to the DS1077L in the format shown in Figure 3. To write to the DS1077L, the master will issue the slave address of the DS1077L and the R/ 0. ...

Page 13

ABSOLUTE MAXIMUM RATINGS Voltage on Any Pin Relative to Ground Operating Temperature Range Programming Temperature Range Storage Temperature Range Soldering Temperature DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Supply Voltage High-Level Output Voltage (OUT1, OUT0) Low-Level Output Voltage (OUT1, OUT0) High-Level Input ...

Page 14

AC ELECTRICAL CHARACTERISTICS PARAMETER Output Frequency Tolerance (from Nominal) Combined Freq. Variation (from Nominal) Output Frequency Min Output Frequency Max Power-Up Time Enable OUT1 from CTRL1 Enable OUT0 from CTRL0 OUT1 Hi-Z from CTRL1 OUT0 Hi-Z from CTRL0 Load Capacitance ...

Page 15

AC ELECTRICAL CHARACTERISTICS: 2-WIRE INTERFACE PARAMETER SYMBOL 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 ...

Page 16

NOTES: 1) All voltages are referenced to ground. 2) 4.87kHz is obtained from a -40MHz standard part. 3) Output voltage swings may be impaired at high frequencies combined with high output loading. 4) After this period, the first clock pulse ...

Page 17

TYPICAL OPERATING CHARACTERISTICS 2 3.3V SUPPLY CURRENT vs. TEMPERATURE TEMPERATURE (C) SUPPLY ...

Page 18

TYPICAL OPERATING CHARACTERISTICS (cont.) 3.4 3.2 3 2.8 2.6 2.4 2 4.5 4 3 3.3V +25ºC, unless otherwise specified SUPPLY CURRENT vs. DIVISOR (FREQUENCY) 100 200 300 400 ...

Page 19

...

Page 20

TYPICAL OPERATING CHARACTERISTICS (cont.) 0.880 0.860 0.840 0.820 0.800 0.780 0.760 0 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0 3.3V +25ºC, unless otherwise specified DS1077L SHUTDOWN CURRENT vs. TEMPERATURE ...

Page 21

TYPICAL OPERATING CHARACTERISTICS (cont.) 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0 3.3V +25ºC, unless otherwise specified DS1077L VOLTCO 2.8 2.9 3.0 3.1 SUPPLY VOLTAGE ( -66 ...

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