Lancaster, PA--May 23, 1996--A series of Internet-readymodems based on the new 33.6 Kbits International Standard (ITU V.34annex 12) has been announced by Amquest Corp. Amquest will beginshipping these modems, which use a chip set made by RockwellInternational, this month to Amquest's authorized distributorsand dealers. In addition, any Amquest modem customer may upgradeto the new standard at a nominal charge.
The new 33.6 Kbits standard permits a higher transmission speed of33,600 bits per second over ordinary telephone lines - a 16o percentimprovement over existing 28.8 Kbits modems and a 133percent improvementover 14.4 Kbits modems. In addition, future Amquest 33.6 KbitsHyperModem versions will permit a theoretical maximum throughputrate of up to 268,800 bits per second with optimized 8-to-1 compression.
Many other modems using the Rockwell chipset operate with amicroprocessor running at only 14 MHz, instead of thehigher performance architecture available under the HyperModem,which uses a 20 MHz microprocessor.
Upgrading an existing Amquest modems and 28.8Kb products involvesinstalling a replacement programmable read-only memory. The replacementis a one-time programmable device, instead of FlashROM memory,since currently available FlashROM components cannot keep up withthe faster capabilities of the HyperModem. Amquest anticipateschanging to a FlashROM as soon as faster parts are available.
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Austin, TX--May 28, 1996--A 16-bit microcontrollerarchitecture, called 68HC12 which is compatible with the standard 8-bit version (68HC11), has been announced by Motorola's AdvancedMicrocontroller Division (Austin, TX). The general-purpose architecture offers low-voltage operation, optimization for wireless communication, and applications in automotive, consumer electronics, and industrial control markets.
The HC12 architecture offers a direct migration path to HC11users. It also implements a modular design, as do the earlier 16-bit HC16 and 32-bit 68300 families, so that the central processor can work with existing peripheral modules.
The central processor (CPU12) and the Lite Integration Module(LIM) are the core elements of the HC12. Sixty-four newinstructions are incorporated in the central processor, alongwith a 20-bit arithmetic unit, an instruction queue, and enhancedindexed addressing that gives access to more than 4 Mbytesof program space and 1 Mbyte of data space. The LIMincludes either a multiplexed or non-multiplexed bus, runtimemonitors, and an in-circuit debug feature.
Two members of the new family and a set of development tools touse with them were also announced: the 68HC812A4 and the68HC912B32 (previewed only -- available in the fourth quarter,1996). The A4 includes 4 kbytes of byte-erasable EEPROM, 1kbyte of static RAM, an 8-channel, 8-bit analog-to-digitalconverter, an 8-channel, 16-bit timer, and 3 serialcommunication interfaces (two asynchronous, one synchronous). The B32 includes 32 kbytes of flash EEPROM and 768 bytes ofbyte-erasable EEPROM, and other features similar to the A4.
Advanced Microcontroller Division
(800)765-7795 or (512)328-2268
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