Electronics Technology


Subsecond elapsed time counter

11 February 2004 Electronics Technology

Dallas Semiconductor's DS1318, a 44-bit, binary, elapsed time counter with 244 µs resolution, combines a 32-bit 'seconds' counter, a 12-bit 'subseconds' counter, periodic interrupt/alarm, and programmable square-wave output in a 24-pin TSSOP package. The elapsed time counter's 44-bit binary counter increments once every 244 µs. By using a software algorithm, the device can derive time of day, week, month, and year, thereby serving as a realtime clock. The square-wave output can be selected from 32,768 kHz, 8,192 kHz, 4,096 kHz, or 1 Hz. The DS1318 monitors Vcc, and when a power-fail occurs, it write-protects the internal registers, and switches to backup power to prevent data corruption. In low-power mode, the oscillator maintains timekeeping down to 1,3 V, consuming less than 1 µA of current. Address and data are transferred using a standard parallel-address bus.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Full sensor to cloud solution
CST Electronics Telecoms, Datacoms, Wireless, IoT
NeoCortec has demonstrated the seamless and rapid development of full sensor-to-cloud solutions using NeoMesh Click boards from MikroE and the IoTConnect cloud solution from Avnet.

Read more...
Banana Pi with NPU
CST Electronics AI & ML
The latest Banana Pi SBC, the BPI-M7, is powered by Rockchip’s latest flagship RK3588 octa-core 64-bit processor, with a maximum frequency of 2,4 GHz.

Read more...
Hardened-grade network switches
CST Electronics Computer/Embedded Technology
Lantronix’s hardened switches provide Layer 2 or Layer 3 networking, and are available as Power-over-Ethernet (PoE) or Power-over-Ethernet Plus (PoE+).

Read more...
Energy measurement IC
CST Electronics Power Electronics / Power Management
The SY7T501 and SY7T502 are Silergy’s newest energy measurement ICs for cost-sensitive IoT applications such as smart-plugs, dimmers, power-strips, intelligent lighting, and other points of load.

Read more...
Easy wireless mesh networking
CST Electronics Telecoms, Datacoms, Wireless, IoT
NeoCortec has announced three new NeoMesh Click boards that are ideal for wireless mesh networking, eliminating the need for engineers to create any development PCB hardware themselves.

Read more...
LoRa transceiver module
CST Electronics Telecoms, Datacoms, Wireless, IoT
The RYLR896 transceiver module from REYAX features the LoRa long range modem that provides ultra-long range spread spectrum communication.

Read more...
High-performance antenna solution
CST Electronics Telecoms, Datacoms, Wireless, IoT
The Spitfire Series of antennas delivers exceptional performance with its dipole design, ground plane independence, and easy wall-mount versatility for both indoor and outdoor environments.

Read more...
SMD antenna for GNSS L1 band
CST Electronics Telecoms, Datacoms, Wireless, IoT
Antenova has recently launched the Admotus SMD antenna, a ceramic antenna suitable for all GNSS positioning applications in the L1 band covering 1559 to 1609 MHz.

Read more...
New NeoMesh protocol stack version
CST Electronics Circuit & System Protection
NeoCortec has released an updated NeoMesh protocol stack version 1.6 firmware for its NC2400 and NC1000 module series, which now supports the new Sensirion SHT4xA temperature and humidity sensor series.

Read more...
Nanometre-precision piezo actuators
RS South Africa Electronics Technology
TDK Corporation has announced two new piezo actuators that are characterised by a wide dynamic range, a high force-to-volume ratio, but with precision in the nanometre range.

Read more...