The Intel 8284 is a clock oscillator chip developed primarily for supplying clock signals for the Intel-8086/8087/8088/8089 series of processors. The commercial variant of the chip comes in 18-pin DIL and 20-pin PLCC packages, and originally was priced at $4.90 USD.[1][2][3] The industrial version, rated for the temperatures range of -40 °C to +85 °C was priced at $13.50 USD.[4] The available 82C84A CMOS version was outsourced to Oki Electronic Industry Co., Ltd.[5] The available packaged Intel 82C84A version of 20-pin PLCC in sampling at first quarter of 1986.[6]
The Intel 8284A situated on a motherboard next to a crystal oscillator.
Pinout 8284
Function
The 8284 contains a clock generator capable of a third the frequency of the input clock (5 or 8MHz with the 8284A, and 10MHz with the 8284A-1), with sources selectable between an external crystal and clock input. The main clock output consists of a 4.5V (Vcc @ 5V) pulse wave at a 33.3% duty cycle, with an additional peripheral clock running at half of the main clock and a 50% duty cycle. Additional logic is provided to accommodate delays to allow for proper system start-up. It has been used in the IBM PC, IBM PC XT and IBM PCjr. It is also the main chip for the SimplicityG computer.
References
^Intel Corporation, "The 8086 Family: Concepts and realities", Intel Preview Special Issue: 16-Bit Solutions, May/June 1980, Page 19
^Intel Corporation, "8086 Available for industrial environment", Intel Preview Special Issue: 16-Bit Solutions, May/June 1980, Page 29
^Intel Corporation, "NewsBit: Intel Licenses Oki on CMOS Version of Several Products", Solutions, July/August 1984, Page 1.
^Ashborn, Jim; "Advanced Packaging: A Little Goes A Long Way", Intel Corporation, Solutions, January/February 1986, Page 2
March 30, 2023
intel, 8284, clock, oscillator, chip, developed, primarily, supplying, clock, signals, intel, 8086, 8087, 8088, 8089, series, processors, commercial, variant, chip, comes, plcc, packages, originally, priced, industrial, version, rated, temperatures, range, pri. The Intel 8284 is a clock oscillator chip developed primarily for supplying clock signals for the Intel 8086 8087 8088 8089 series of processors The commercial variant of the chip comes in 18 pin DIL and 20 pin PLCC packages and originally was priced at 4 90 USD 1 2 3 The industrial version rated for the temperatures range of 40 C to 85 C was priced at 13 50 USD 4 The available 82C84A CMOS version was outsourced to Oki Electronic Industry Co Ltd 5 The available packaged Intel 82C84A version of 20 pin PLCC in sampling at first quarter of 1986 6 The Intel 8284A situated on a motherboard next to a crystal oscillator Pinout 8284Function EditThe 8284 contains a clock generator capable of a third the frequency of the input clock 5 or 8MHz with the 8284A and 10MHz with the 8284A 1 with sources selectable between an external crystal and clock input The main clock output consists of a 4 5V Vcc 5V pulse wave at a 33 3 duty cycle with an additional peripheral clock running at half of the main clock and a 50 duty cycle Additional logic is provided to accommodate delays to allow for proper system start up It has been used in the IBM PC IBM PC XT and IBM PCjr It is also the main chip for the SimplicityG computer References Edit Intel Corporation The 8086 Family Concepts and realities Intel Preview Special Issue 16 Bit Solutions May June 1980 Page 19 alldatasheet com 8284 Datasheet pdf1 alldatasheet com Retrieved 2016 11 26 alldatasheet com UPB8284AD Datasheet pdf1 alldatasheet com Retrieved 2016 11 26 Intel Corporation 8086 Available for industrial environment Intel Preview Special Issue 16 Bit Solutions May June 1980 Page 29 Intel Corporation NewsBit Intel Licenses Oki on CMOS Version of Several Products Solutions July August 1984 Page 1 Ashborn Jim Advanced Packaging A Little Goes A Long Way Intel Corporation Solutions January February 1986 Page 2 Retrieved from https en wikipedia org w index php title Intel 8284 amp oldid 1141241559, wikipedia, wiki, book, books, library,
