Calendar Clock for Your LSI-11 System You Need the Q
Contents
1. T E 4 nP 19 NI CAD BATTERIES Rechargeable batteries provide 60 day minimum back up power for the calendar clock and CMOS memory hh 8201 M tn ww LJ fir LE ON ah ANA AL eem TE LM f Cast X EM EN gK u M gt oom Jamm MA ram 2 ar Cra f ey p s fe 3 J 1 Cade a 4 3 ILL LF 7 ws kr Root M TuSSIAN 2217 TI me e z sad cad unk on an oe a 1 P AAR M PANGIL PT D ES N 8 VICUS fff Tw Aem X Lon TM Aare eet O Ve ER w wm w wwe c y aA Nan te E iT OS af off Taw Gt C CRYSTAL OSCILLATOR A stable 32 768 Hz crystal oscillator serves as a refer ence for both the calendar clock and the 60 Hz LTC AUXILIARY CONNECTOR PARALLEL PORT This connector provides a 8 bit buffered input and buffered oscillator output 8 bit latched output are Provision is also made for provided Control signals external oscillator battery and 4 address lines allow and LTC inputs user expansion to 16 input and 16 output ports Input data lines are terminated CODAR ji TECHNOLOGY d INC For those real time applications where a CMOS calendar clock is absolutely essential such as data acquisition process control automated testing medical systems and a variety of unattended operations there are no gray areas when it comes to performance and reliability You will fin2. prepared by CTI can show you some of the ways the Q Timer will give your system a competitive advantage And be sure to let us know when you find an interesting job for your Q Timer to perform we ll add it to the Q Notes LSI 11 and FALCON are trademarks of Digital Equipment Corporation Q Timer is a trademark of Codar Technology Inc Codar Technology Inc E E E Mdh 8A d 1428 Florida Avenue ublication No 1984 Codar Technology Inc Longmont Colorado 80501 Printed in U S A 303 776 0472
3. MP CODAR TECHNOLOGY INC mo 2900 00 1 Bl A a AANS 1 uu S vv O z Ld t SURO tte E 9 i encor Y n PLLL EPL IOUS qal Tn S SUR Oe SETA V t riie A 2 E X ES 4 STF Pepee Taj L Vu gt a gt foe TS Witt tix al L ET T amp 9444 V Z A y MTM g L i ud When You Need More Than Just a Calendar Clock for Your LSI 11 System Qer You Need the Q Timer LINE TERMINATORS Removable 180 390 ohm resistor DIP pacs provide proper termination for the LSI 11 bus HARDWARE BOOT The 4K x 16 bit EPROM memory is organized as sixteen 256 word pages Boot codes for popular devices are included as well as calendar clock routines and Q Timer diagnostics CALENDAR CLOCK This function provides tenths of second seconds minutes hours days day of week month and year with automatic leap day insertion CMOS MEMORY The 2K x 16 bit CMOS RAM organized as eight 256 word pages is used to store critical information during power failures and fluctuations Mereere f Y DILTTYYY VC TERM i JALTI LJ 60 HZLTC This circuitry generates a stable 60 Hz Line Time Clock interrupt BEVNT thus eliminating depen dence on the power line frequency DEC compatible grece wit bx x p Se ied m mtm mmm AM town E Ew Rw M o9 mat uos m ta tA op ites E B gt
4. d some extra reassurance from selecting the Q Timer from Codar s Computer Products Division because the people who developed and build it also use it in their own scientific systems where there is no compromise on quality Codar s user background also introduces a valuable systems orientation to designing a multi function board to enhance DEC LSI 11 systems _ There is no wasted board space The calendar clock is just one element of the Q Timer s capability and the integration and application flexibility is unparalleled in the DEC system environment There s a non volatile random access memory on board There s all the software in EPROM you need to put the calendar clock to work immediately plus leftover room for user defined functions There s a line time clock LTC There are parallel I O ports In fact some application specialists have replaced up to four dual wide modules with the Q Timer There simply isn t another product like it anywhere in the world The calendar clock chip itself contains 16 registers to provide tenths of seconds seconds minutes hours days day of week month and year with automatic leap day insertion Additional circuitry creates a 60 Hz LTC to generate a stable interrupt that eliminates dependency on the power line frequency Both the calendar clock and LTC use a 32 768 KHz crystal oscillator for reference A byte addressable 2K x 16 bits CMOS RAM memory divided into eight pages of 256 wor
5. ds each referenced via the I O page may be used for data and or parameter storage The feature is particularly important to users of RSX 11S and other systems without disk storage Both the calendar clock and RAM are backed up by an on board Ni Cad battery pack with recharging circuit that will maintain the CMOS devices in an operational state for a minimum of 60 days typical 75 days These are not the flat button cells frequently used in CMOS applications but are special high temperature devices designed specifically for long life low current float charge applications Separate 8 bit parallel input port and 8 bit latched parallel output port provide a path by which the Q Timer can perform a variety of I O functions in addition to routine calendar clock tasks Ports are expandable by the user to eight 8 bit input and eight 8 bit output The Codar Q Timer was developed by systems specialists to be a multi dimensional problem solver not just another hardware component As an example the majority of software required for integration is contained in on board EPROM thereby eliminating expensive and time consuming program development In addition to a self diagnostic routine that provides a go no go verification of RAM calendar clock and LTC the EPROM software monitor has bootstrap routines for RLO1 02 RKO5 RX01 02 RMO2 TU58 and TM11 storage devices The monitor provides an interactive user friendly environment for selec
6. ic display subsystems using true vector generation techniques and specialized data acquisition systems with supporting software The parent company Codar Technology Inc is the original developer of the Coastal Ocean Dynamics Radar system which is used by commercial and governmental oceanographic interests to measure ocean surface conditions with high frequency radar The experience of developing integrating and field supporting a highly sophisticated end user system incorporating an LSI 11 processor necessitates the design of components and subsystems that are not available from commercial sources These products are now available to other DEC users through the Computer Products Division TECHNICAL SPECIFICATIONS Module Size Operating Power Operating Temperature Relative Humidity Bus Loading Batteries Battery Back up Battery Life Clock Accuracy Address EPROM Boot EPROM CMOS Memory I O Response Time 60 Hz LTC Phase Jitter Parallel I O 5 2 x 8 9 dual wide 5V 5 1 2 Amp with bus terminators 0 7 Amp without bus terminators 0 C 50 C 5 95 noncondensing 1 LSI 11 bus load per I O line 3 x 1 2 Volt Ni Cad 180 ma hours 60 days minimum 75 days typical 3 5 years typical 8 seconds month typical error 15 C to 40 C 4096 x 8 bit one 2732 450 ns maximum access time 4096 x 16 bit two 2732s 450 ns maximum access time 2048 x 16 bit static CMOS RAM 9 ps maximum 0 2 maximum 33 ws no
7. n accumulating TTL compatible 120 O input termination STANDARD REGISTER ADDRESS ASSIGNMENTS REGISTER LTC Control Calendar Clock EPROM Memory EPROM Page Select Register CMOS Memory CMOS Page Select Register Parallel Inputs Parallel Outputs 1 O ADDRESS ATTRIBUTE 777546 Write Only 777300 777336 Read Write 773000 773777 Read Only 777340 Write Only 766000 766777 Read Write 777342 Write Only 777240 777276 Read Only 777200 777236 Write Only LSI 11 RLO1 02 RK05 RX01 02 RSX 11M RT 11 RMO2 TU58 and TM11 are trademarks of Digital Equipment Corporation Q Timer is a trademark of Codar Technology Inc Publication No 130 0100 01 1983 Codar Technology Inc Printed in U S A Codar Technology Inc 1428 Florida Avenue Longmont Colorado 80501 303 776 0473 TIMER es MI TECHNICAL UPDATE WATCHDOG TIMER Your hung system problems are over The Q Timer now has a unique watchdog timer which will automically re boot your LSI 11 system in the event a hardware or software problem prevents normal code execution Various time delaysfromless than one second to over 18 minutes can be selected for the re boot interval using on board jumpers The watchdog circuit is prevented from performing a re boot by simply reading address 777340 at least once during each selected time interval The required read operation is easily implemented without modification or patching of your operating system If desired the wa
8. tchdog can be disabled with a single jumper Almost any application from data acquisition to dial up time share can benefit from this new feature It provides great protection against soft memory errors static discharge or peripheral problems and may save you an emergency service call at 3 00 A M MEMORY DIAGNOSTICS We have added a memory diagnostic to the Q Timer s interactive software monitor This diagnostic provides automatic memory sizing and completed pass reporting on up to 4 million bytes of main memory while performing worst case testing On unmapped systems memory will be tested up to the limit of 56 KB If the processor has memory management hardware it will be employed to test memory up to the limit of 248 KB on 18 bit systems or 4088 KB on 22 bit systems This feature is a great time saver as it eliminates the requirement for stand alone DEC diagnostics distribution media and documentation The memory diagnostic is selected for execution from the Q Timer monitor as the MD device SBC 11 21 SUPPORT The Q Timer monitor now provides an enhanced version of Digita s MACRO ODT for use with the SBC 11 21 FALCON The Q Timer lets you build 11 21 systems that include ODT while allowing you to use the 11 21 s memory sockets making them unavailable for other uses If you re considering using a Falcon in your application please give us a Call APPLICATION NOTES Q Notes a series of short technical articles
9. ting various boot devices JJ diagnostics and user generated routines while automatically printing date and time on powerup The free Q Timer documentation contains simple program listings that allow integrating calendar clock functions into RSX 11M or RT 11 operating systems Absolutely no SYSGEN or patching of your operating system is required Flexibility in configuration planning is another added dimension of the Q Timer Q Timer devices can be disabled or their I O address locations changed to fit specific configurations Three modes of LTC operation may be selected by on board jumpers You get 16 18 and 22 bit compatibility with source code listings available to simplify customized applications Need more convincing How about a 50 page user s manual written by system integrators for system integrators How about a six month warranty How about direct telephone counsel on special application problems Still have questions Great We have factory experts and sales representatives who can t wait to hear from you We look forward to being challenged by your application CODAR pi TECHNOLOGY INC COMPUTER PRODUCTS DIVISION Codar Technology s Computer Products Division develops manufactures and markets enhancement products for LSI 11 data acquisition systems Representative of the product line are the Q Timer a HI REL system chassis designed to function under difficult environmental and power conditions graph
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