Telecoms, Datacoms, Wireless, IoT


Dual UARTs with full 2,25 V-5,5 V power supply range

30 January 2002 Telecoms, Datacoms, Wireless, IoT

Dual UART (universal asynchronous receiver/transmitter) ICs with wide power supply range (2,25 V - 5,5 V) and on-chip transmit (TX) and receive (RX) FIFO (first-in, first-out) of 64-byte depth with FIFO counters are now available from Exar. Applications include portable computer systems, point-of-sales handheld terminals, PDAs among others. The 64-byte FIFO depth in the XR16L275x product family lengthens intervals between CPU interrupt, and the TX and RX FIFO counters shorten the time for each interrupt service; both features minimise CPU bandwidth requirements and increase system throughput, according to the company.

The XR16L275x (dual UARTs) support data rates up to 6,125 Mbps at 5,0 V, 4 Mbps at 3,3 V, and 3 Mbps at 2,5 V at an eight times (8x) sampling rate. These 64-byte FIFO depth devices provide an easy migration path to Exar's 128-byte FIFO products.

The XR16L2750, XR16L2751 and XR16L2752 have automatic hardware (RTS/CTS) flow control and hysteresis, plus automatic software (Xon/Xoff) flow control to eliminate RX data overflow. In addition, these devices support automatic RS485 half-duplex direction control output - enabling and speeding up two-wire polling operation.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Converter power modules for 48 V networks
Altron Arrow Power Electronics / Power Management
The economic and quality-of-life benefits of electrification is driving the adoption of HV to 48 V DC-DC conversion across many markets with 48 V power modules becoming more common.

Read more...
How a vision AI platform and the STM32N6 can turn around an 80% failure rate for AI projects
Altron Arrow AI & ML
he vision AI platform, PerCV.ai, could be the secret weapon that enables a company to deploy an AI application when so many others fail.

Read more...
What does Wi-Fi 7 mean for South African networks?
Telecoms, Datacoms, Wireless, IoT
With Wi-Fi 7 (802.11be), we are finally looking at a standard that was built, not just for more devices, but for the new way networks are used.

Read more...
Memory for asset tracking
Altron Arrow DSP, Micros & Memory
The Page EEPROM, ST’s latest memory, has been designed for efficient datalogging and fast firmware upload/download in battery-operated devices.

Read more...
Multiprotocol wireless SoC
RF Design Telecoms, Datacoms, Wireless, IoT
The nRF54LM20A from Nordic Semiconductor is a multiprotocol wireless System-on-Chip designed for demanding designs in Bluetooth devices.

Read more...
High performance communication
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
Quectel’s FCS950R is a high-performance Wi-Fi 5 and Bluetooth 4.2 module that can deliver a maximum data rate up to 433,3 Mbps in 802.11ac mode.

Read more...
Microchip and AVIVA Links collaboration
Altron Arrow News
Microchip and AVIVA Links have achieved groundbreaking ASA-ML interoperability, accelerating the shift to open standards for automotive connectivity.

Read more...
Expanded STM32WL3x line for IoT sensors
Altron Arrow Telecoms, Datacoms, Wireless, IoT
The STM32WL31x and STM32WL30x are more tailored versions of the STM32WL33x for designers who wish to focus on specific features, while lowering their bill of materials.

Read more...
Full-band GNSS helical antenna
RF Design Telecoms, Datacoms, Wireless, IoT
A key feature of Calian’s HC3990XF antenna design is that it does not require a ground plane, making it ideal for size-constrained applications.

Read more...
BLE and BT Mesh module
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
The HM-BT4531 from HOPERF is a BLE data transmission module that features an ARM Cortex-M0 32-bit processor.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved