Connecting C166 architecture (II) Thanks their high performance,

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Connecting C166 architecture (II) Thanks their high performance,

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Axel Wolf
Connecting C166 architecture (II)
Thanks their high performance, controller area networks (CANs) being used growing scale real-time applications industrial automotive electronics. following descriptions connecting C165 CAN, development tools Siemens C166 family demonstration model designed trade fairs workshops illustrate versatility benefits networked microcontrollers. Part this article appeared Components XXIX (1994)
Connecting C165
level applied timing (TIM) controller decides whether data output rising edge (TIM Fig. falling edge (TIM signal pin. P4.7 C165 controls power-down transceiver, where this present. controller side, inactive level applied pins WR#, RD#, ALE, pins AD7, which required when serial connection between C165 81C91 used. Development tools C166 family
81C90/91 obvious choice tried tested development tools using C165 CAN, just C166 architecture used 80C166. contrast with first generate programs verify system. ample shown Fig. however, 81C91 (without 8-bit ports) C165 81C91 selected circuit shown 40.000 CLKOUT XTAL Fig. connected C165 MTSR MRST synchronous serial channel SCLK CAN_L n.c. (SSC) synchronous serial transceiver P4.5 Transmit interface (SSI), which selected CAN_H Px.x Receive Connection applying high level pin. CAN_L application Power this example, should Py.y down configured follows: single mas18 P2.0 INT# (EX0IN) ter/full duplex mode, master mode, RSTOUT# RES# first, transfer data width P4.6 bits, clock idle level low, first P4.7 edge clock data shift, second edge data latch. diversity these setting options impressively Fig. Connection C165 demonstrates flexibility 81C91 (serial) C165/C167's SSC. Every access 81C91 starts activating module external address decoder logic needed, this function performed port (e.g. P4.6). P4.5 C165 then selects read write operation input controller. address first data byte subsequently written controller connecting master transfer/slave receive (MTSR) data input (DI) pin. Depending operation, more additional data bytes written 81C91, more data bytes read from module line between master receive/slave transmit (MRST) data output (DO) pin. Finally, 81C91 deactivated again (CS# controllers synchronized SCLK-CLK connection. They contain only compiler support also, course, emulation facility, even modules with integrated module C167CR. Software drivers available CAN-specific aids simple implementation communication under control respective microcontroller. Interfaces integration have already been implemented operating system debugger level. Beyond this, evaluation boards available that users assess high performance C166 solutions start developing their applications. demonstration model circuits shown Figs. (published Part were developed author connection with thesis
CAN_H
rocessor features take pride place C165. represents C167 with pared-down peripherals undiminished computer power. C165 therefore used implement high-end embedded control applications telecommunications data processing (e.g. mass storage units laser printers) even lower cost. contrast with C167, C165 contains converter capture/compare units. However, serial interfaces, complex timers chip-select signals still available. C165 also retains 2K-byte internal fast interrupt system sources).
Components (1995)
telecommunications degree college Stuttgart. develop programmable demonstration model trade fairs workshops which would illustrate networking Siemens microcontrollers with (Fig. This application made three microcontrollers: C167CR, 81C90 88C166-5M flash EPROM derivative 80C166). hardware used model comprises three user boards. Communication represented visually with automotive module containing lighting equipment, small electric motor with rotating disk display, acoustically with loudspeaker.
NODE_166_1 board acts second node. contains 88C166-5M controller used control processor, whose flash EPROM node's control program stored. controller 81C90 enables 88C166-5M communicate bus. Coupling again provided transceiver 82C250. quartz oscillator supplies controllers with clock. simple circuit allows 88C166-5M reset. chipselect signal controller generated 74HC138 decoder.
Software demonstration model complete software demonstration model written high-level programming language function keys used send various instructions (e.g. "dip headlights") messages from node other nodes bus. These messages then trigger appropriate operations, which indicated display control relevant key. potentiometer connected node allows speed engine rotating disk node altered; this option requires continuous transmission relevant information bus. function keys allows user change baud rate CAN. function node designed simulate mode malfunction subsystem controlled, which then reported node indicated display. ST10F166 flash programming board from SGS-Thomson used write software nodes flash EPROM 88C166-5M. After final tests, software node stored EPROMs, which were then exchanged RAMs EVA167. demonstration model presented 1994 Hanover Fair, Japan Electronics Show electronica `94. currently being used Siemens Microelectronics Training Center instructional system courses. More detailed information this application components presented here available request.
Check #2-95-6 (HL) Reader Service Card
Hardware hardware demonstration model comprises three nodes EVA167+NODE_167, NODE_166_1 NODE_166_2 well demonstration vehicle. node EVA167+NODE_167 (bus node consists EVA167 evaluation board made Ertec supplementary board NODE_167. Ertec evaluation board low-cost entry-level development tool projects based C167 controller. complete processor module mounted board. standard version contains following major components well C167 controller: modules application programs, quartz oscillator 9-contact subminiature-D female connector matching standard port. controller pins 160-contact male connector. C167, which does contain module, replaced C167CR this application, RAMs were replaced EPROMs containing software this node. supplementary board NODE_167 contains eight bounce-free function keys with integrated control LEDs, transceiver 82C250 (from Philips), display, 9-contact subminiature-D female connector 9-contact subminiature-D male connector which plugs into bus. potentiometer included allow "speed simulation". 160-contact female connector provides connection between boards EVA167 NODE_167.
Fig. This demonstration model representing automotive electronics applications illustrates benefits networked microcontrollers. specially developed mobile presentations trade fairs workshops
this point, NODE_166_1 (bus node NODE_166_2 (bus node boards completely identical. They differ only components circuits required various functions representative subsystems controlled demonstration model. node controls lighting demonstration vehicle, contains eight transistors acting drivers this purpose. contrast, node designed simulate engine management module demonstration vehicle; contains electric motor driving rotating disk, function key. This node board also controls loudspeaker. nodes interconnected cables Connectors with terminating resistors located nodes
Note Part Fig. specification 81C90/91 been changed. CLKOUT should connected (not 11), i.e. (not X1).
Components (1995)

Connecting C166 architecture (II) Thanks their high performance,

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