Pico Communications E-14 manual RS‐232 Serial Transceiver, Max Connections

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*Please refer to the Analog Interface Selection Guide in Appendix E for compatible 8‐12‐bit converters

RS‐232 Serial Transceiver

The Pico E‐14 contains one asynchronous RS‐232 serial transceiver that also meets EIA/TIA‐232 and V.28/V.24 specifications at a maximum data rate of 250kBps. Because the serial transceiver is directly connected to the FPGA any bit high‐level protocol can be implemented in logic. Pico Computing supports various asynchronous, synchronous and military serial protocols.

RS‐232 is the most common physical layer protocol for serial data. It is the standard used on serial mice for computers, modems, consumer GPS receivers and even some military radios. Only one wire is needed to send a signal on an RS‐232 link. A total of two devices are allowed on a single RS‐232 link.

In addition, there are two possible logic states on an RS‐232 line (high and low). The high voltage is positive and the low voltage is negative.

Physical Layer Specifications:

Standard

Noise

Max

Max

 

Immunity

Distance

Speed

RS‐232

Satisfactory

50ft

250 kBps*

Max

Connections

1 Tx / 1 Rx

*Maximum speed decreases with increased cable length.

*The old RS‐232, 422 and 485 standards are now obsolete and have been replaced by EIA/TIA‐232, 422 and 485.

Serial Transceiver Specifications:

Maximum Continuous Positive Input Voltage

Maximum Continuous Negative Input Voltage

ESD Protection Limit

Maximum Short Circuit Duration on Output

Typical RS‐232 Output Voltage

RS‐232 Maximum Low Input Threshold*

RS‐232 Minimum High Input Threshold

*RS‐232 Receivers can accept digital inputs

+25 VDC

‐25 VDC +/‐15,000V Infinite

+/‐ 5.4 V

1.2V

1.5V

E‐14 Hardware Reference Manual

www.picocomputing.com

Pico Computing, Inc.

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Contents ‐14 Interfaces ContentsFeatures AppendicesProduct Overview Pico E-14 EP Quick Reference Datasheet Power W Pico E‐14 Electrical SpecificationsPower Consumption Minimum Nominal MaximumSystem Architecture RAMFpga Fabric Field Programmable Gate ArrayFpga Resources DSP SlicePowerPC Processor PPC405x3 Processor IntroductionCpld TurboLoader Cpld ResourcesTri‐Mode Ethernet Interface Ethernet ResourcesFlash Memory Byte addresses Description Flash SectorsDDR2 Memory ‐Bit, 165 Msps Digital‐to‐Analog Converter DAC Analog Interface Optional‐Bit, 80 Msps Analog‐to‐Digital Converter ADC Max Connections Serial Transceiver SpecificationsRS‐232 Serial Transceiver Diagen State Electrical Specifications Minimum Nominal MaximumDigital Peripheral Interface CardBus Interface Pcmcia Interface ResourcesElectrical Specifications DC Minimum Nominal Maximum Digital Bus InterfaceJtag Debug Interface Device Instruction register bit lengthPeripheral I/O Connector Pinout Appendix a Peripheral I/O Connector InformationConnector Information Description Brand Part NumberName Pin Description Dir Appendix B CardBus Connector InformationCardBus Connector Pinout CardBus Connector Pull Up and Pull Down Information Name Pin Description Value‐14 Hardware Reference Manual Appendix C Fpga Pinout Fpga PinoutCBCAD15 DACD0 Ethertxer FLASHD12 RAMA7 SSTL18IIDCI Ramloopback Net Pin Description Direction Appendix D Cpld PinoutCpld Pinout C10 Sleep Mode Request Pico E‐14 EP Appendix E Standard Part Number ListingStandard Part Number Listing Appendix F Errata All versionsAppendix G Fpga Performance Enhancements Part Resolution bits Speed Msps Low Power Appendix E Analog Interface Selection Guide14.1.8.12 Revision History14.1.8.11 Legal Notices

E-14 specifications

Pico Communications E-14 is an advanced wireless communication device designed to meet the demands of modern connectivity. As a versatile solution, it serves various applications in sectors such as telecommunications, IoT, and smart cities. The E-14 stands out for its compact design, exceptional performance, and robust feature set that cater to both individual users and enterprises.

One of the primary features of the Pico E-14 is its support for multiple communication protocols, including LTE, NB-IoT, and LoRaWAN. This multi-protocol capability ensures that users can select the most suitable option for their specific use case, whether it be high-speed data transfer or low-power wide-area networking. With seamless integration into existing infrastructure, the E-14 facilitates hassle-free deployments.

Power efficiency is another hallmark of the Pico E-14. Designed for longevity, the device includes intelligent power management features that drastically reduce energy consumption, making it an ideal choice for battery-operated devices and remote monitoring applications. This capability is particularly valuable in settings where maintenance access is limited, and downtime must be minimized.

The E-14’s built-in security features provide enhanced data protection, making it suitable for applications that require confidentiality and integrity. With end-to-end encryption, secure boot, and trusted platform modules, users can rest assured that their data remains protected against unauthorized access and cyber threats.

Moreover, the Pico E-14 boasts a user-friendly interface, which simplifies setup and operation. Its intuitive configuration tools allow users to quickly adjust settings and monitor performance metrics, reducing the need for specialized technical knowledge. This ease of use is a significant advantage in environments where teams may vary in technical expertise.

The device is also rugged and built to withstand harsh environmental conditions. Its robust casing protects against dust, moisture, and extreme temperatures, allowing it to function reliably in a variety of settings, from urban installations to remote field deployments.

With its array of features, the Pico Communications E-14 is well-positioned to play a pivotal role in the evolution of connectivity solutions. By offering flexible communication methods, energy efficiency, enhanced security, and user-friendly functionality, it addresses the complexities of modern communication needs while paving the way for innovative applications in the future.
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