データシートサーチシステム |
|
MC68340 データシート(PDF) 27 Page - Freescale Semiconductor, Inc |
|
MC68340 データシート(HTML) 27 Page - Freescale Semiconductor, Inc |
27 / 441 page MOTOROLA MC68340 USER’S MANUAL 1- 3 1.1.1 Organization The M68300 family of integrated processors and controllers is built on an M68000 core processor, an on-chip bus, and a selection of intelligent peripherals appropriate for a set of applications. The CPU32 is a powerful central processor with nearly the performance of the MC68020. A system integration module incorporates the external bus interface and many of the smaller circuits that typically surround a microprocessor for address decoding, wait-state insertion, interrupt prioritization, clock generation, arbitration, watchdog timing, and power-on reset timing. Each member of the M68300 family is distinguished by its selection of peripherals. Peripherals are chosen to address specific applications but are often useful in a wide variety of applications. The peripherals may be highly sophisticated timing or protocol engines that have their own processors, or they may be more traditional peripheral functions, such as UARTs and timers. Since each major function is designed in a standalone module, each module might be found in many different M68300 family parts. Driver software written for a module on one M68300 part can be used to run the same module that appears on another part. 1.1.2 Advantages By incorporating so many major features into a single M68300 family chip, a system designer can realize significant savings in design time, power consumption, cost, board space, pin count, and programming. The equivalent functionality can easily require 20 separate components. Each component might have 16–64 pins, totaling over 350 connections. Most of these connections require interconnects or are duplications. Each connection is a candidate for a bad solder joint or misrouted trace. Each component is another part to qualify, purchase, inventory, and maintain. Each component requires a share of the printed circuit board. Each component draws power—often to drive large buffers to get the signal to another chip. The cumulative power consumption of all the components must be available from the power supply. The signals between the CPU and a peripheral might not be compatible nor run from the same clock, requiring time delays or other special design considerations. In a M68300 family component, the major functions and glue logic are all properly connected internally, timed with the same clock, fully tested, and uniformly documented. Power consumption stays well under a watt, and a special standby mode drops current well under a milliamp during idle periods. Only essential signals are brought out to pins. The primary package is the surface-mount quad flat pack for the smallest possible footprint; pin grid arrays are also available. 1.2 CENTRAL PROCESSOR UNIT The CPU32 is a powerful central processor that supervises system functions, makes decisions, manipulates data, and directs I/O. A special debugging mode simplifies processor emulation during system debug. Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
同様の部品番号 - MC68340 |
|
同様の説明 - MC68340 |
|
|
リンク URL |
プライバシーポリシー |
ALLDATASHEET.JP |
ALLDATASHEETはお客様のビジネスに役立ちますか? [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | リンク交換 | メーカーリスト All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |