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P82C54-2
82C54 CHMOS PROGRAMMABLE INTERVAL TIMER Compatible with all Intel and most other microprocessors High Speed ‘‘Zero Wait State’’ Operation with 8 MHz 8086 88 and 80186 188 Y Handles Inputs from DC 10 MHz for 82C54-2 Y Available in EXPRESS Standard Temperature Range Extended Temperature Range Three independent 16-bit counters Y Low Power CHMOS ICC e 10 mA 8 MHz Count frequency Y Completely TTL Compatible Y Y Y Six Programmable Counter Modes Y Y Binary or BCD counting Y Status Read Back Command Y Available in 24-Pin DIP and 28-Pin PLCC The Intel 82C54 is a high-performance CHMOS version of the industry standard 8254 counter timer which is designed to solve the timing control problems common in microcomputer system design It provides three independent 16-bit counters each capable of handling clock inputs up to 10 MHz All modes are software programmable The 82C54 is pin compatible with the HMOS 8254 and is a superset of the 8253 Six programmable timer modes allow the 82C54 to be used as an event counter elapsed time indicator programmable one-shot and in many other applications The 82C54 is fabricated on Intel’s advanced CHMOS III technology which provides low power consumption with performance equal to or greater than the equivalent HMOS product The 82C54 is available in 24-pin DIP and 28-pin plastic leaded chip carrier (PLCC) packages 231244 – 3 PLASTIC LEADED CHIP CARRIER 231244 – 1 Figure 1 82C54 Block Diagram 231244 – 2 Diagrams are for pin reference only Package sizes are not to scale Figure 2 82C54 Pinout October 1994 Order Number 231244-006
INTEL
Intel Corporation
U.S.A
マイクロプロセッサ・チップセット・フラッシュメモリなどの開発・製造・販売 世界CPU市場ではここ数年80%近いシェアを維持している。
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