![]() |
|
![]() |
|
![]() |
![]() |
|
![]() |
1999-10-04
,
S/IC-2086/27
On-chip communications peripherals and memory support offer solution for high-speed applications
Philips Semiconductors today announced two new additions to its popular 16-bit XA microcontroller family, coined the "Philips Semiconductors is reinforcing its commitment to the growth and continued innovation of the XA microcontroller family with the introduction of these new devices",said Geoff Lees, director of marketing, Microcontroller Business Line at Philips Semiconductors. "The XA-H3 and XA-H4 devices fill a need in the industrial control and communications market for extremely cost-effective solutions with high-performance memory and multi-tasking capabilities." The XA-H3 and XA-H4 boast an impressive list of features including four "85C30-style" UARTs with direct memory access (DMA) and 230.4 Kilobits per second (Kbps) data transmission capability. The devices have a de-multiplexed memory interface for SRAM, Flash or EPROM. Six fully configurable chip-selects and a de-multiplexed address/data bus allow external memory to be interfaced with no external glue logic. As is the case with many other Philips Semiconductors microcontrollers, these devices support in-system programming (ISP) to enable designers to easily download and upgrade code in the field, or remotely via a modem or network connection. Additionally, these devices support the Harvard Architecture, allowing for separate code and data memory, or the option of a user-configurable Unified Memory Space, enabling the user to map the memory as code, data, or both. The XA-H4 has all of the features of the XA-H3, plus a DRAM controller and four enhanced Universal Synchronous/Asynchronous Receiver/Transmitters (USARTs). The DRAM controller handles up to 5 banks of memory, operating at various speeds, without external glue logic. Each of the 5 banks supports from 256 bytes to 8 MB of DRAM. The USARTs support High-level Data Link Control/Synchronous Data Link Control (HDLC/SDLC) and communications at data rates up to 1 Mbps. An autobaud function eliminates the need for external baud-rate selection software, or hardware. Furthermore, each USART features up to 4 user-programmable match characters that can be used for XON/XOFF and escape sequence detection, or multi-processor communication protocol support.
Philips Semiconductors is the world's leading supplier of the most popular 8-bit architecture, the Philips Semiconductors, a division of Royal Philips Electronics, headquartered in Eindhoven, The Netherlands, is the eighth largest semiconductor supplier based on Dataquest's 1998 report*2). Philips Semiconductors' innovations in digital audio, video, and mobile technology position the company as a leader in the consumer, multimedia and wireless communications markets. Sales offices are located in all major markets around the world and are supported by systems labs. Additional information on Philips Semiconductors can be obtained by accessing its home page at http://www.semiconductors.philips.com *1) Source: Dataquest. Based on Vendor Revenue by Architecture of Microcontroller Market Share and Unit Shipments. Reprinted with permission. *2) Based on Vendor Revenue from Shipments of Total Semiconductors Worldwide according to Dataquest's 1998 Worldwide Semiconductor Market Share report published in May, 1999. |
![]() |
![]() |
Copyright © 2000 Royal Philips Electronics All rights reserved. Terms and conditions. |
|