av9154a Holt Integrated Circuits, Inc., av9154a Datasheet
av9154a
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av9154a Summary of contents
Page 1
... Pentium systems. The AV9154A-42 and AV9154A-43 devices offer features specifically for green PCs. The AV9154A-42 and -43 have a single pin that, when pulled low, will smoothly slow the 2XCPU clock to 8 MHz. This is ideal for dynamic DX microprocessors. The AV9154A-43 not only has the slow clock feature, but also offers a glitch-free stop clock for static SX microprocessors ...
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... Description of new pin: SLOWCLK# forces 2XCPUCLK output to ramp smoothly to 8MHz and CPUCLK output to 4 MHz when pulled low. 16-Pin PDIP or SOIC 2 16-Pin PDIP or SOIC AV9154A-43 Description of new pis: SLOWCLK# forces 2XCPUCLK output to ramp smoothly to 8MHz when pulled STOPCLK# provides gilitch- free stop of the 2XCPUCLK output when pulled low ...
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... When STOPCLK again goes high, 2XCPUCLK resumes on the next rising edge of the internal clock. This feature enables fast, glitch-free starts and stops of the 2XCPUCLK and is guaranteed that the CPU does not receive any short period clocks. 3 AV9154A ...
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... AV9154A Pin Descriptions Frequencies based upon 14.318 MHz input) PIN NUMBER -4 -10 -26 -27 - ...
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... AV9154A -42 2XCPUCLK CPUCLK 33.33 16.67 33.33 25 12. 66.66 33.33 66. -42 CPUCLK 2XCPUCLK 16.00 8.00 16.00 40.09 20.05 40.09 33.41 16.71 33.41 25.06 12.55 25.06 60.14 30.07 60.14 20.05 10.03 20.05 66.48 33.24 66.48 50.11 25.06 50.11 Clock Table for AV9154A-26 (using 14.318 MHz input all frequencies in MHz) FS(2:0) 2XCPU CPUCLK (MHz) (MHz) 0 100.23* 1 80.18* 2 66.48* 3 50.11 4 40.09 5 32.22 6 24.23 7 15.75 - -43 50.11 40.09 33.24 25.06 20.05 16.11 12.12 7.88 ...
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... AV9154A Absolute Maximum Ratings V referenced to GND ........................................................................... 7 Voltage on I/O pins referenced to GND ..... GND - 0 VDD + 0.5 V Operating Temperature under bias .............................................. 0 to +70 ºC Power Dissipation ................................................................................... 0.5 W Storage Temperature ............................................................... -40 to +150 ºC Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stess specifications only and functional operation of the device at these or any other conditions above those listed in the operational sections of the specifications is not implied ...
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... Parameter is guaranteed by design and characterization. Not subject to production testing. AC Characteristics TEST CONDITIONS MIN 15pF load 15pF load 15pF load 40/60 15pF load 50/65 10,000 cycles 10,000 cycles 10,000 cycles -350 10,000 cycles 2 70 AV9154A-42 off to 50 MHz from MHz 7 AV9154A TYP MAX - - 2.2 3.5 - 1.2 2.5 48/52 60/40 43/57 65/50 - 100 ...
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... AV9154A Electrical Characteristics at 5 ± 10 unless otherwise stated DD A PARAMETER SYMBOL Input Low Voltage V Input High Voltage V Input Low Current Input High Current Output Low Voltage V 1 Output High Voltage V 1 Output Low Current I 1 Output High Current ...
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... V = 5V±5% 45/ load 40/65 10,000 cycles - 10,000 cycles - 10,000 cycles -250 10,000 cycles - 2 140 AV9154A- MHz - from 8 to 66.66 MHz - 9 AV9154A TYP MAX UNITS - 1 2 0.5 1.5 ns 2.0 3.0 ns 48/52 55/45 % 43/57 65/ 140 ps 0.8 2.0 ...
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... SOIC Package AV9154A-04CS16 AV9154A-10CS16 AV9154A-26CS16 Lead Count & Package Width Lead Count=1, digits W=0.3" SOIC or 0.6" DIP; None=Standard Width Package Type N=DIP (Plastic), S=SOIC Pattern Number (2 or 3-digit number for parts with ROM-code patterns) ...