Most silicon chips inside the iButton are also available in conventional plastic integrated circuit packages. This collection of devices is referred to as 1-Wire™ Chips. Some of the plastic packages make use of the additional leads to allow special functions such as addressable switches, counters, A/D converters, etc. that cannot be realized as iButtons.
Battery Management
Dallas Semiconductor's Battery Management products perform numerous vital tasks in managing intelligent battery pack data. Unique silicon labeling helps protect against third-party cloning, thus protecting OEM after-market revenue and promoting product safety. True nonvolatile EPROM/EEPROM memory is used to store critical battery data such as charging parameters, cell chemistry, lot codes, etc. The products in this family vary in the level of integrated instrumentation techniques. Integrated digital thermometers replace thermistors in battery packs used for charge termination, safety, and/or histograms for self-discharge approximation. Voltage monitoring allows for cell balancing, charge termination, or crude fuel gauging. More highly integrated products also offer current measurement integrated over time to facilitate more accurate coulomb-based fuel gauging. All data is transferred between the battery pack and host over a 1-Wire™ interface, reducing battery contacts to the minimum of three.
CPU Supervisors
Dallas Semiconductor manufactures a variety of CPU Supervisors which vary in complexity from simple 3-pin power fail resets to complex 16-pin system power managers capable of managing the power and functionality of a microprocessor-based system. Incorporating a number of general, designer-friendly features, all Dallas CPU Supervisors detect and send a reset when the power source is out of tolerance. Most products are designed to accept a pushbutton reset and many are available standard in the industrial temperature range.
Digital Audio
A new product line at Dallas Semiconductor addresses specific digital audio applications. Using our core expertise in digital, mixed-signal, and DSP technologies, we have developed additional technologies such as sigma-delta conversion and Universal Serial Bus (USB) communication processing. The PC industry is quickly migrating to USB as the high-speed bus of choice for external peripheral connection, including USB digital speakers. Our USB Audio devices are used to solve the USB interface and playback elements in these emerging digital audio applications.
Digital Potentiometers
Dallas Semiconductor manufactures a wide variety of digitally controlled, solid-state electronic potentiometers. These potentiometers offer the user advantages in device control, reliability, power consumption, accuracy, and available packaging options. Microprocessor-controlled, these digital potentiometers are available in a variety of versions, packages, numbers of positions and tap points, and temperature grades.
Line Interfaces
Dallas Semiconductor's Driver products meet the RS-232 industry standard, the most widely used serial communications standard in the world. Several types of ICs are available, including chips containing two drivers and receivers, a triple driver/receiver pair, and a single driver/receiver pair for battery-powered applications.
Memory Products
Dallas Semiconductor leads the world in Nonvolatile SRAM technology. Each module in this broad product family contains a low-power SRAM, a tiny lithium battery, and our own nonvolatile control chip. These components together form a nonvolatile memory capable of more than 10 years of data retention without an external power supply. NV SRAM modules feature 70ns access times for reads and writes, limitless endurance, and automatic data protection when system power is turned off. Dallas NV SRAMs can be read and written faster, more frequently and more safely than any other type of nonvolatile memory.
Microcontrollers
Dallas Semiconductor offers Secure and High-Speed Microcontrollers. The Secure Microcontroller family is a line of 8051-compatible microcontrollers based on nonvolatile RAM (NV RAM) rather than ROM for program and data storage. Using NV RAM in a microcontroller provides several features that system designers need that have never been available in an off-the-shelf product. High-Speed Microcontrollers are direct performance upgrades for the 8051, one of the most popular microcontrollers in the world. Featuring a streamlined design, they do in only 4 clock cycles what has traditionally taken 12 clock cycles. Designed to be drop-in upgrades, their redesigned core results in over 3x performance with the same external clock.
Nonvolatile Controllers
Nonvolatile Controllers switch power between a primary supply and a secondary supply to allow SRAMs to maintain memory even in the absence of primary power. These devices also control chip enable to protect the SRAM from spurious writes when power is out of tolerance.
Silicon Timed Circuits
Dallas Semiconductor's Silicon Timed Circuits (STCs) are the all-silicon, IC-reliable advance over traditional hybrid delay lines. STCs also bring the designer new ways to overcome timing problems and improve system performance. Applications include timing between ASICs and increasing performance in memory management, clock timing and distribution or bus management situations. Our Silicon Timed Circuits offer innovative circuit designs and factory laser or EPROM trimming for precision timing without the need for external components. Dallas STCs offer the added reliability of ICs and are compatible with TTL and CMOS designs. All devices are fabricated in our Class 1, CMOS 6-inch wafer fab in Dallas, Texas and feature sizes down to 0.8 microns. Packaging options include dual-in-line (DIP) in the standard hybrid lead configurations and small outline (SOIC) depending on the particular product. Chips are suitable for vapor phase, IR and wave soldering manufacturing processes. Services which meet designers' need for quick response include custom delays and a Late Package Program that shortens lead time for prototype and custom versions. Silicon Timed Circuits are divided into two subsets: Hybrid Replacement Solutions and System Enhancement Solutions.
EconOscillators
EconOscillators feature a programmable oscillator with frequencies that range from 30 kHz to 110 MHz. EconOscillators generates clock frequencies simply and easily without external timing components. Onboard, programmable EEPROM registers provide the designer the flexibility of selecting the device mode of operation and the divider values for sub-multiples of the master reference frequency. Standard frequencies of 60, 66, 80 and 100 MHz are available, factory-programmed to divide by 2 when the Reference Output is turned off. Simple custom parts have a standard master frequency, but non-standard values are programmed into the dividers and function bits. Complex custom parts have a non-standard master frequency programmed into the internal oscillator (factory programmable only). Also available is the DS1075K Development Kit with board, software and sample parts for prototyping and breadboarding. The kit allows a customer to make simple custom parts on-site, saving time and cost when design changes require frequency changes.
System Extension
This product family provides complete solutions to common problems facing many system designers.
T1/E1 and HDLC Solutions
Dallas Semiconductor offers a comprehensive product family addressing the requirements of digital voice and data transmission. New 3.3-volt and 5-volt T1 and E1 transceivers are offered in single- and four-channel packages, reducing power and PCB space requirements. For T1 and E1 applications not requiring a line interface, 12- and 16- channel framers are offered in a single package. Advanced feature-set HDLC controllers tailored for high channel count and high bandwidth applications simplify Frame Relay and IP designs. ADPCM processors double or quadruple the capacity of voice communication channels through DSP compression techniques with our line of Voice Compression Products.
Termination Products
Dallas Semiconductor's Bus Termination product family consists of integrated terminator solutions for single-ended SCSI, differential SCSI and BTL systems. SCSI (Small Computer Systems Interface) is an industry standard parallel interface for connecting peripheral devices to a computer. Dallas Semiconductor Bus Termination products support SCSI standards including SCSI-1, Fast SCSI, Ultra SCSI and Plug and Play SCSI.
Thermal Sensors
Dallas Semiconductor makes Thermal Management easy with its line of direct-to-digital temperature sensors. These sensors provide a digital reading of temperature directly, eliminating the need for A/D converters dedicated to temperature measurement. Factory-calibrated to relieve the user of linearity corrections and other compensation, Dallas Semiconductor's sensors provide a measurement range and accuracy unparalleled in the solid-state industry. This growing product family features accuracy/cost tradeoffs and numerous value-added options including on-chip EEPROM, standalone thermostat comparators, multipoint sensing capability, and monitoring of voltage supplies and fan speed.
Timekeeping
Dallas Semiconductor has been the leader in providing Real Time Clocks for a broad range of applications since 1985. The Company's proprietary timekeeping CMOS circuits consume current at the nano-ampere level during periods of inactivity. As a result, they can be powered by a small lithium cell for more than 10 years, longer than the useful life of most equipment. Because of this longevity, equipment manufacturers do not have to design provisions for battery replacement into their products. Dallas Semiconductor offers timekeeping chips and Year 2000-compliant clocks as well as modules that combine circuits with lithium and quartz.