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TC520A 数据表(PDF) 1 Page - Microchip Technology |
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TC520A 数据表(HTML) 1 Page - Microchip Technology |
1 / 16 page © 2002 Microchip Technology Inc. DS21431B-page 1 TC520A Features • Converts TC500/TC500A/TC510/TC514 to Serial Operation • Programmable Conversion Rate and Resolution for Maximum Flexibility • Supports up to 17-Bits of Accuracy Plus Polarity Bit • Low Power Operation: Typically 7.5m Ω • 14-Pin PDIP or 16-Pin SOIC Packages • Polled or Interrupt Mode Operation Applications • Computer Peripheral Interface • Portable Instruments • Data Acquisition System Interface Device Selection Table Package Type General Description The TC520A serial interface adapter provides logic control for Microchip's TC500/TC500A/TC510/TC514 family of dual slope, integrating A/D converters. It directly manages TC500 converter phase control sig- nals A, B and CMPTR, thereby reducing host processor task loading and software complexity. Com- munication with the TC520A is accomplished over a 3 wire serial port. Key converter operating parameters are programmable for complete user flexibility. Data conversion is initiated when the CE input is brought low. The converted data (plus overrange and polarity bits) are held in an 18-bit shift register until read by the processor or until the next conversion is completed. Data may be clocked out of the TC520A at any time, and at any rate, the user prefers. A Data Valid (DV)out- put is driven active at the start of each conversion cycle, indicating the 18-bit shift register update has just been completed. This signal may be polled by the pro- cessor or can be used as data ready interrupt. The TC520A timebase can be derived from an external fre- quency source of up to 6MHz or can operate from its own external crystal. It requires a single 5V logic supply and dissipates less than 7.5m Ω. Part Number Package Temperature Range TC520ACOE 16-Pin SOIC (Wide) 0 °Cto +70°C TC520ACPD 14-Pin PDIP 0 °Cto +70°C B CMPTR DGND VDD A DIN OSCOUT DCLK OSCIN DOUT 114 213 312 411 510 69 78 TC520A CE DV LOAD READ 14-Pin PDIP 16-Pin SOIC 8 1 2 3 4 5 6 7 TC520A DIN B 14 13 12 11 10 9 15 16 LOAD DV CE DCLK A DOUT READ N/C CMPTR DGND VDD OSCOUT OSCIN N/C Serial Interface Adapter for TC500 A/D Converter Family |
类似零件编号 - TC520A |
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类似说明 - TC520A |
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