QT300-IS Atmel, QT300-IS Datasheet
QT300-IS
Specifications of QT300-IS
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QT300-IS Summary of contents
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... The device operates on demand, and can be synchronized to allow several QT300’s to operate near each other without cross-interference APACITANCE TO AVAILABLE OPTIONS T SOIC + - +85 C QT300-IS Copyright © 2002 QRG Ltd QT300 D C IGITAL ONVERTER DRDY 1 8 SCK 2 7 SNS1 3 6 Vss 4 5 APPLICATIONS ...
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... SPI bus, while the1W UART requires that the controller have one dedicated pin for each QT300. There are two types of SPI mode, master and slave. The type of serial port and its mode can be selected via the cloning process using a QTM300CA programming adapter ...
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... While waiting for a new request the part low power mode SPI Port 3.1 SPI Specifications The QT300 can operate in master or slave mode, and thus is compatible with virtually all SPI-capable microcontrollers. The SPI interface has the following specifications: Max clock rate, Fckm ...
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... Vcc 1 4) Host detects /DRDY is low. DRDY 2 3 SENSOR SCK SNS 1 5) Host clocks out the high byte of data from the QT300 REQ SNS Host waits for ≥12µs. 7 SDO GND 7) Host clocks out the low byte of data from the QT300. ...
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... The host device triggers the QT300 to acquire by means of a pulse sent to the QT300 over the wire. The Baud rate is established by the width of this pulse; the pulse width establishes the bit rate of the UART transmission to follow ...
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... Baud rate. The QT300 measure this pulse and uses its length to set the Baud bit (shift out) rate. 30µs (or more) of logic-low must follow this pulse. The host must then float the 1W line to allow the QT300 to start the signal acquisition. 5 Circuit Guidelines 5 ...
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... Cx value 100pF 7.3 AC SPECIFICATIONS Vdd = 3. recommended operating range, Cs=100nF unless noted Parameter Description PC BL RQP 7.4 DC specifications Vdd = 3.0V 10nF 5pF recommended range, unless otherwise noted Parameter Description Min Typ Max Min Typ Max +125 Units Notes Units Notes QT300 R1.01 21/09/ ...
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... SCK Low Duration 12.5 SCK High To SDO Ready 4 Setup Time SDO Hold Time 12.5 MSB-LSB Spacing 8.3 DRDY Low To SCK High 12.5 Delay Table 7-2 Master SPI Timing QT300 R1.01 21/09/03 Thso Thso max Units µs 1,725 µs 862.5 µs 862.5 µ µ ...
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... Table 7-4 Setups summary chart 9 Tmls 8bits LSB Tstop Notes - 210 - - - 2 - 400 Depends on Cs and 850 - 8 bits data, LSB first Calculation / Notes - Tscd = (30 + (SCD x 8))/1.2 Tmls = (10 + (MLS x 4))/1.2 QT300 R1.01 21/09/03 Units µs µs µ µs µs µs Unit - µs µs ...
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... Temperature, °C Figure 7-7 Typical Signal Vs. Cs & Temp Vdd = 5.0 Volts 10pF, PPS film capacitors 10 150 Cs 125 43nF 74nF 100 124nF 200nF Load Figure 7-5 Typical resolution vs Cx & Cs; Vdd = 3.0 Volts 200nF PPS 100nF PPS 4.7nF PPS QT300 R1.01 21/09/ ...
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... H φ h Inches Min Max 0.205 0.213 0.3 0.33 0.203 0.212 0.05 0.012 0.02 0.004 0.013 0.07 0.08 0.007 0.01 0.02 0.035 QT300 R1.01 21/09/ Notes Typical BSC e E Notes BSC ...
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Tel: +44 (0)23 8056 5600 Fax: +44 (0)23 8045 3939 The specifications set out in this document are subject to change without notice. All products sold and services supplied by QRG are subject to our Terms and Conditions of ...