DS1077Z-66+ datasheet, PDF - EEWORLD Datasheet

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DS1077Z-66+: DescriptionProgrammable Oscillators EconOscillator/Dvdr 66MHz 118mil 2-Wire; CategoryThe embedded processor and controller Microcontrollers and processors; File Size306KB，21 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

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DS1077Z-66+ Overview

Programmable Oscillators EconOscillator/Dvdr 66MHz 118mil 2-Wire

DS1077Z-66+ Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Maxim
Parts packaging code	SOIC
package instruction	SOP,
Contacts	8
Reach Compliance Code	compliant
ECCN code	EAR99
JESD-30 code	R-PDSO-G8
JESD-609 code	e3
length	4.9 mm
Humidity sensitivity level	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output clock frequency	66.666 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply voltage	5.25 V
Minimum supply voltage	4.75 V
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3.9 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER
Base Number Matches	1

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DS1077

EconOscillator/Divider

www.maxim-ic.com

FEATURES

Processor-controlled or standalone solid-

state oscillator

Frequency changes on-the-fly

Dual low-jitter, synchronous fixed

frequency outputs

2-wire serial interface

Frequency outputs 8.1kHz to 133MHz

±0.5% variation over temp (+25°C to

+70°C)

±0.5% initial tolerance

Nonvolatile (NV) frequency settings

Single 5V supply

No external components

Power-down mode

Synchronous output gating

PIN ASSIGNMENT

OUT1

OUT0

GND

SCL

SDA

CTRL1

CTRL0

150mil SO

118mil µSOP Package

PIN DESCRIPTION

OUT1

OUT0

GND

CTRL1

CTRL0

SDA

SCL

STANDARD FREQUENCY OPTION

Note: x denotes package option

DS1077x-133 133.333MHz to

DS1077x-125 125.000MHz to

DS1077x-120 120.000MHz to

DS1077x-100 100.000MHz to

DS1077x-66

66.666MHz to

16.2kHz

15.2kHz

14.6kHz

12.2kHz

8.1kHz

- Main Oscillator Output

- Reference Output

- Power Supply Voltage

- Ground

- Control Pin for OUT1

- Control Pin for OUT0

- 2-Wire Serial Data

Input/Output

- 2-Wire Serial Clock

ORDERING INFORMATION

Note: XXX denotes frequency option

DS1077Z-XXX

8-Pin 150mil SO

DS1077U-XXX

8-Pin 118mil µSOP

DESCRIPTION

The DS1077 is a dual-output, programmable, fixed-frequency oscillator requiring no external

components for operation. The DS1077 can be used as a processor-controlled frequency synthesizer or

as a standalone 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 a

divider. The specific output frequencies chosen are stored in NV (EEPROM) memory. The DS1077

defaults to these values upon power-up.

The DS1077 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 NV

(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. Pre-programmed devices can be ordered in customer-

requested frequencies.

The DS1077 is available in 8-pin 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.

EconOscillator is a trademark of Dallas Semiconductor.

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011006

DS1077

OVERVIEW

A block diagram of the DS1077 is shown in Figure 1. The DS1077 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 a master frequency (Master CLK) that can be routed

directly to the outputs (OUT0 & OUT1) or through separate prescalers (P0 & P1). OUT1 can also be

routed through an additional divider (N).

The Prescaler (P0) divides the Master Clock by 1, 2, 4, or 8 to be routed directly to the OUT0 pin.

The Prescaler (P1) divides the Master Clock by 1, 2, 4, or 8, which can be routed directly to the OUT1 pin

or to the Divider (N) input, which is then routed to the OUT1 pin.

The Programmable Divider (N) divides the Prescaler Output (P1) by any number selected between 2 and

1025 to provide the Main Output (OUT1) or it can be bypassed altogether by use of the DIV1 register bit.

The value of N is stored in the DIV register.

The Control Registers are user-programmable through a 2-wire serial interface to determine operating

frequency (values of P0, P1, & N) and modes of operation. The register values are stored in EEPROM

and therefore only need to be programmed to alter frequencies and operating modes.

PIN DESCRIPTIONS

Output 1 (OUT1)—This

pin is the main oscillator output; its frequency is determined by the control

Output 0 (OUT0)—A

reference output, OUT0, is taken from the output of the reference select Mux. Its

frequency is determined by the control register settings for CTRL0 and values of Prescaler P0 (mode bits

0M1 & 0M0) (see Table 1).

Control Pin 0 (CTRL0)—A

multifunctional input pin that can be selected as a MUX SELECT,

OUTPUT ENABLE and/or a POWER-DOWN. Its function is determined by the user-programmable

control register values EN0, SEL0, and PDN0 (see Table 1).

Control Pin 1 (CTRL1)—A

multifunctional input pin that can be selected as a OUTPUT ENABLE

and/or a POWER-DOWN. Its function is determined by the user-programmable control register value of

PDN1 (see Table 2).

Serial Data Input/Output (SDA)—Input/Output

pin for the 2-wire serial interface used for data transfer.

Serial Clock Input (SCL)—Input

pin for the 2-wire serial interface used to synchronize data movement

on the serial interface.

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