The M48T08/18/08Y TIMEKEEPER® RAM is an 8 K x 8 non-volatile static RAM and real-time clock that is pin and function compatible with the DS1643.

This monolithic chip is offered in two specialized packages, delivering a highly integrated solution for battery-backed memory and real-time clock functionality.

The M48T08/18/08Y serves as a non-volatile equivalent in pin and function to any JEDEC standard 8 K x 8 SRAM.

It seamlessly fits into various ROM, EPROM, and EEPROM sockets, offering the non-volatility of PROMs without necessitating special WRITE timing or imposing limitations on the number of WRITEs that can be executed.

The 28-pin, 600 mil DIP CAPHAT encapsulates the M48T08/18/08Y silicon along with a quartz crystal and a long-lasting lithium button cell within a single package.

The 28-pin, 330 mil SOIC features sockets with gold-plated contacts at both ends, allowing for direct connection to a separate SNAPHAT® housing that contains the battery and crystal.

This innovative design permits the SNAPHAT® battery package to be mounted atop the SOIC package following the completion of the surface mount process.

Inserting the SNAPHAT® housing after reflow mitigates the risk of potential damage to the battery and crystal due to the elevated temperatures required for surface-mounting the device.

The SNAPHAT® housing is designed with a key to prevent reverse insertion.

The SOIC and battery/crystal packages are supplied separately in plastic anti-static tubes or in tape & reel format.

For the 28-lead SOIC, the part number for the battery/crystal package (e.g., SNAPHAT®) is “M4T28-BR12SH” or “M4T32-BR12SH.”

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Features:

• Guaranteed Zero Reading for 0V Input on All Scales
• True Polarity at Zero for Precise Null Detection
• 1pA Typical Input Current
• True Differential Input and Reference, Direct Display Drive- LCD ICL7106, LED lCL7107
• Low Noise – Less Than 15μVP-P
• On Chip Clock and Reference
• Low Power Dissipation – Typically Less Than 10mW
• No Additional Active Circuits Required
• Enhanced Display Stability
• Pb-Free Plus Anneal Available (RoHS Compliant.

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SAR ADC

• 12-Bit (C8051F020/1)
• 10-Bit (C8051F022/3)
• ± 1 LSB INL
• Programmable Throughput reaching up to 100 ksps
• Supports up to 8 External Inputs; Configurable as Single-Ended or Differential
• Programmable Amplifier Gain options: 16, 8, 4, 2, 1, 0.5
• Data-Dependent Windowed Interrupt Generator
• Integrated Temperature Sensor (± 3°C) – 8-bit ADC
• Programmable Throughput reaching up to 500 ksps
• 8 External Inputs
• Programmable Amplifier Gain options: 4, 2, 1, 0.5 – Two 12-bit DACs
• Capable of Synchronizing Outputs to Timers for Jitter-Free Waveform Generation – Two Analog Comparators – Voltage Reference – Precision VDD Monitor/Brown-Out Detector

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The AT89C2051 is a high-performance, low-voltage CMOS 8-bit microcomputer featuring 2K bytes of Flash programmable and erasable read-only memory (PEROM). This device is produced using Atmel’s advanced nonvolatile memory technology and is compatible with the widely-used MCS-51 instruction set. By integrating a flexible 8-bit CPU with Flash memory on a single chip, the Atmel AT89C2051 offers a robust microcomputer that delivers a highly adaptable and economical solution for numerous embedded control applications.

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Analog Peripherals – 24 or 16-Bit ADC

• No missing codes
• 0.0015% nonlinearity
• Programmable conversion rates up to 1 ksps
• 8-Input multiplexer
• 1x to 128x PGA
• Built-in temperature sensor
  – Two 8-Bit Current Output DACs
  – Comparator
• Programmable hysteresis and response time
• Configurable as interrupt or reset source
• Low current (0.4 µA)

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Schneider Electric’s PowerPacT represents a premier range of multi-standard-compliant MCCBs, renowned for their exceptional reliability. These solutions are ideal for highly demanding applications and are engineered to safeguard electrical distribution systems against damage resulting from overloads and short circuits. The series provides a rating range from 15 A to 3,000 A.

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The ADS1231 is a high-precision, 24-bit analog-to-digital converter (ADC) designed specifically for bridge sensor applications. It features an integrated low-noise internal amplifier with a gain of 128, an onboard oscillator, and a precision third-order delta-sigma (ΔΣ) modulator, along with a low-side power switch for bridge sensors.

This comprehensive front-end solution is suitable for various applications, including weigh scales, strain gauges, and load cells. The device supports selectable data rates of 10SPS or 80SPS. The low-noise amplifier, with a gain of 128, is capable of handling a full-scale differential input of ±19.5mV while providing simultaneous rejection of both 50Hz and 60Hz signals.

The ΔΣ ADC operates at 10SPS with a resolution of 24 bits and includes a third-order modulator and a fourth-order digital filter. It supports two data rates: 10SPS (with rejection for both 50Hz and 60Hz) and 80SPS. The ADS1231 can be placed in a low-power standby mode or completely powered down. Control of the ADS1231 is achieved through dedicated pins, eliminating the need for digital register programming. Data output is facilitated via a simple, isolated serial interface that connects directly to the MSP430 and other microcontrollers.

The supply voltage range for the ADS1231 is from 3V to 5.3V, and it is packaged in an SOIC-16 format. The operating temperature range is specified from –40°C to +85°C. APPLICATIONS

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The XTR111 functions as a precision voltage-to-current converter, specifically engineered for standard analog signals ranging from 0mA to 20mA or 4mA to 20mA, and can source currents up to 32mA.

The relationship between the input voltage and output current is determined by a single resistor, RSET. Additionally, the circuit can be adapted for voltage-output operation.

A high output resistance and an extensive compliance voltage range, which spans from 2V below the supply voltage, VVSP, to voltages significantly lower than ground, are provided by an external P-MOSFET transistor.

Furthermore, the adjustable subregulator output, which ranges from 3V to 15V, supplies power to additional circuitry.

The XTR111 is offered in 10-pin HVSSOP and VSON surface-mount packages.

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The AS6C4008 is a low power CMOS static random access memory with a capacity of 4,194,304 bits, organized into 524,288 words of 8 bits each.

It is manufactured using high-performance, highly reliable CMOS technology.

The standby current remains stable across the operating temperature range.

The AS6C4008 is specifically designed for very low power system applications and is particularly ideal for battery backup non-volatile memory applications.

This memory operates from a single power supply ranging from 2.7V to 5.5V, and all inputs and outputs are fully compatible with TTL standards.

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The TJA1050 serves as the interface between the Controller Area Network (CAN) protocol controller and the physical bus. The device offers differential transmission capabilities to the bus and differential reception capabilities to the CAN controller. The TJA1050 is the third high-speed CAN transceiver developed by Philips, following the PCA82C250 and the PCA82C251.

The key differences include:

• Significantly reduced electromagnetic emissions due to optimal signal matching of CANH and CANL

• Enhanced performance in the event of an unpowered node

• Absence of a standby mode.

These features render the TJA1050 particularly well-suited for use in nodes that are in a power-down state within partially powered networks.

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