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CDP68HC68S1M датащи(PDF) 1 Page - Intersil Corporation |
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CDP68HC68S1M датащи(HTML) 1 Page - Intersil Corporation |
1 / 14 page 6-84 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 407-727-9207 | Copyright © Intersil Corporation 1999 CDP68HC68S1 Serial Multiplexed Bus Interface Description The CDP68HC6SS1 Serial Bus Interface Chip (SBlC) provides a means of interfacing in a Small Area Network configuration, various microcomputers (MCU’s) containing serial ports. Such MCU’s include the family of 68HC05 microcontrollers. The SBlC provides a connection from an MCU’s Serial Communication Interface (asynchronous UART type interface) or Serial Periph- eral Interface (synchronous) to a medium speed asynchronous two wire differential signal bus designed to minimize electro- magnetic interference. This two wire bus forms the network bus to which all MCU’s are connected (through SBI chips). See Fig- ure 1. Each MCU operates independently and may be added or deleted from the bus with little or no impact on bus operation. Such a bus is ideal for inter-microcomputer communication in hazardous electrical environments such as automobiles, aircraft or industrial control systems. In addition to acting as bus arbitor and interface for microcom- puter SCI port to differential bus communication, the CDP68HC68S1 contains all the circuitry required to convert and synchronize Non-Return-to-Zero (NRZ) 8-bit data received on the differential bus and clock the data into a microcomputer’s SPl port. Likewise, data to be sent by a microcomputer’s SPI port is converted to asynchronous format by appending start and stop bits before transmitting to other microcomputers. Refer to the data sheet for the CDP68HCO5C4 for additional information regarding CDP68HCO5 microcomputers and their Serial Communications and Serial Peripheral Interfaces. The CDP68HC68S1 is supplied in a 14 lead dual-in-line plastic package (E suffix), and in a 20 lead small outline plastic pack- age (M suffix). Operating voltage ranges from 4V to 7V and operating temper- ature ranges from -40oC to +105oC. Features • Differential Bus for Minimal EMl • High Common Mode Noise Rejection • Ideal for Twisted Pair Wiring • Data Collision Detection • Bus Arbitration • Idle Detection • Programmable Clock Divider • Power-On Reset Ordering Information PART NUMBER TEMPERATURE RANGE PACKAGE CDP68HC68S1E -40oC to +105oC 14 Lead PDIP CDP68HC68S1M -40oC to +105oC 20 Lead SOIC (W) April 1994 File Number 1918.3 Pinouts CD68HC68S1 (PDIP) TOP VIEW CD68HC68S1 (SOIC) TOP VIEW CLK A B MODE BUS+ BUS- VSS VDD CONTROL IDLE CS SCK REC XMIT 1 2 3 4 5 6 7 14 13 12 11 10 9 8 11 12 13 14 15 16 17 18 20 19 10 9 8 7 6 5 4 3 2 1 CLK A B MODE NC NC NC BUS+ BUS- VSS VDD NC IDLE CS CONTROL SCK NC NC REC XMIT |
Аналогичный номер детали - CDP68HC68S1M |
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Аналогичное описание - CDP68HC68S1M |
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