Dallas Semiconductor Manuals

The DS1330 256k NV SRAM has a minimum data retention of 10 years in the absence of external power.

This document describes the characteristics of the DS1207 TimeKey in detail, including non-reversible decryption, time allocation, partitioned storage, user-insertable packaging, etc.

The DS1780 CPU Peripheral Monitor monitors CPU temperature, voltage, and fan speed. It also features chassis intrusion detection and remote system reset.

DS1345 1024k Nonvolatile SRAMs are 1,048,576-bit, fully static, nonvolatile SRAMs organized as 131,072 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry which constantly monitors VCC for an out-of-range condition and resets the processor when the condition is detected.

The DS1245Y/AB 1024k Nonvolatile SRAM features 10 years minimum data retention in the absence of external power and is automatically protected during power loss. It replaces 128k x 8 volatile static RAM, EEPROM or Flash memory, has unlimited write cycles, and is low-power CMOS. Read and write access times are as fast as 70 ns. The lithium energy source is electrically disconnected to retain freshness until power is applied for the first time.

The DS1073M/Z series is a frequency generator produced by Texas Instruments. It uses a single chip programmable prescaler and a programmable divider to achieve a frequency range of 27.3kHz to 100MHz, and no external components are required.

The DS1065 is a fixed frequency oscillator that requires no external components for operation. Numerous operating frequencies are possible in the range of approximately 30 kHz to 100 MHz through the use of an on-chip programmable prescaler and divider. The DS1065 features a master oscillator followed by a prescaler and then a programmable divider. The prescaler and programmable divider are user-programmable with the desired values being stored in nonvolatile memory. This allows the user to buy an off the shelf component and program it on site prior to board production. Design changes can be accommodated easily by simply programming different values into the device (or reprogramming previously programmed devices). The DS1065 is shipped from the factory configured for half the maximum operating frequency. Contact the factory for specially programmed devices. The DS1065 features a dual-purpose Input/Output pin. If the device is powered up in Program mode this pin can be used to input or output voltage.

The DS1065 is a fixed-frequency oscillator that requires no external components for operation. Numerous operating frequencies are possible in the range of approximately 30 kHz to 100 MHz through the use of an on-chip programmable prescaler and divider. The DS1065 features a master oscillator followed by a prescaler and then a programmable divider. The prescaler and programmable divider are user-programmable with the desired values being stored in nonvolatile memory. This allows the user to buy an off the shelf component and program it on site prior to board production. Design changes can be accommodated easily by simply programming different values into the device (or reprogramming previously programmed devices). The DS1065 is shipped from the factory configured for half the maximum operating frequency. Contact the factory for specially programmed devices. The DS1065 features a dual-purpose Input/Output pin. If the device is powered up in Program mode this pin can be used to input programming commands or read output status.

The DS1052 is a programmable, 5-bit, pulse-width modulator featuring a 2-wire addressable controlled interface. The DS1052 operates from power supplies ranging from 2.7V up to 5.5V. The PWM output provides a signal that swings from 0V to VCC. The DS1052-100 requires a typical operating current of 100µA and a programmable shutdown supply current of 1µA. One standard PWM output frequency is offered: 100kHz. The 2-wire addressable interface allows operation of multiple devices on a single 2-wire bus and provides compatibility with other Dallas Semiconductor 2-wire devices such as real-time clocks (RTCs), digital thermometers, and digital potentiometers. The device is ideal for low-cost LCD contrast and/or brightness control, power supply voltage adjustment, and battery charging or current adjustment. The DS1052 is offered in standard integrated circuit packaging, including the 8-pin (150-mil) SOIC and spac

The DS1052 is a programmable 5-bit pulse-width modulator with adjustable duty cycle, operating voltage range of 2.7V to 5.5V, standard frequency value of 100kHz, and a 2-wire addressable interface.

The DS1050 is a programmable, 5-bit pulse-width modulator featuring a 2-wire addressable controlled interface. The DS1050 operates from power supplies ranging from 2.7V up to 5.5V. The PWM output provides a signal that swings from 0V to VCC. The DS1050 requires a typical operating current of 50mA and a programmable shutdown supply current of 1mA. Four standard PWM output frequencies are offered and include 1kHz, 5kHz, 10kHz, and 25kHz. The 2-wire addressable interface allows operation of multiple devices on a single 2-wire bus and provides compatibility with other Dallas Semiconductor 2-wire devices such as real-time clocks (RTCs), digital thermometers, and digital potentiometers.

The DS1045 is a programmable silicon delay line with one input and two 4-bit programmable delay outputs. Each 4-bit programmable output offers the user 16 possible delay values to select from, starting with a minimum inherent DS1045 delay of 9ns and a maximum achievable delay in the standard DS1045 family of 84ns. The standard DS1045 product line provides the user with three devices having uniform delay increments of 3, 4 and 5ns, depending on the device. Table 1 presents standard device family and delay capability. Additionally, custom delay increments are available for special order through Dallas Semiconductor. The DS1045 is TTL and CMOS-compatible and capable of driving ten 74LS-type loads. The output produced by the DS1045 is both leading and trailing edge accurate.

DS1044 is Dallas Semiconductor's fastest 4-in-1 delay line, with four independent logic buffered delays in a single package. The device is available in a standard 14-pin DIP and 14-pin SOIC package. The device features precise leading and trailing edge accuracies. It has the inherent reliability of an all-silicon delay line solution. The DS1044's nominal tolerance is ±1.5ns and an additional tolerance over temperature and voltage of ±1.0ns for the faster delays. Each output is capable of driving up to 10 LS loads. Standard delay values are indicated in Table 1.

The DS1040 Pulse Generator is a user-programmable one-shot with a choice of five precise pulse widths. Maximum widths range from 50 ns to 500 ns; increments range from 2.5 ns to 100 ns. For maximum flexibility in applications such as magneto-optical read/write disk laser power control, varieties are offered with equal and unequal increments. The DS1040 is offered in standard 8-pin DIPs and 8-pin mini-SOICs. Low cost and superior reliability over hybrid technology are achieved by the combination of a 100% CMOS silicon design and industry standard packaging. The DS1040 series of pulse generators provide a nominal width accuracy of ±5% or ±2 ns, whichever is greater. In response to the rising edge of the input (trigger) pulse, the DS1040 produces an output pulse with a width determined by the logic states of the three programming pins.

The document introduces the characteristics of the DS1035 series products, including three independent logic buffered delays and accurate pin descriptions.