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ALD523D Fiches technique(PDF) 8 Page - Advanced Linear Devices |
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ALD523D Fiches technique(HTML) 8 Page - Advanced Linear Devices |
8 / 20 page © © © © 2001 Advanced Linear Devices, Inc., 415 Tasman Drive, Sunnyvale, California 94089-1706, Tel: (408) 747-1155, Fax: (408) 747-1286 ALD523D 12/01 http://www.aldinc.com 8 of 20 SELECTING AND CONFIGURING DISPLAY SETTINGS The ALD523D uses SEL0 and SEL1 control-input pins for selecting different display sets “DGS0”, “DGS1”, “DGS2”, and “DGS3”. Each display set “DGSx” has an associated mode of operation “Mx”, unit display “UNTx”, decimal point placement “LxDEC”, and multiplier scale factors “ ±CALx”, where x=0, 1, 2 or 3. The SEL0 and SEL1 switches have 4 logical states of operations as described in Table 3. Each logical state combination selects different measurement labels/units, scale factors, decimal point location, and mode selections. In all modes of operation, the SEL0 and SEL1 software switch setting selections override the hardware jumper functions of the DEC1 and DEC2 or M and Z switches when either SEL0 or SEL1 are set to logical “1”. When SEL0=0 and SEL1=0, the ALD523D selects display set “DGS0”, which consists of a combination of “M1”, “UNT1”, “+CAL1” and “ −CAL1” parameters from addresses 00H, 18H to 1FH, 30H to 37H, and 38H to 3FH of the EEPROM memory, respectively. In the calibrated reference mode (mode-A) and the display only mode (mode-C), DEC1 and DEC2 hardware jumper switches are used to place decimal point. In mode-B operation, no decimal point is displayed. When SEL0=1 and SEL1=0, the ALD523D selects display set “DGS1”, which consists of a combination of “M1”, “L1DEC”, “UNT1”, “+CAL1” and “ −CAL1” parameters from addresses 00H, 05H, 18H to 1FH, 30H to 37H, and 38H to 3FH of the EEPROM memory, respectively. The decimal point is placed according to the content of the “L1DEC” parameter. When SEL0=0 and SEL1=1, the ALD523D selects display set “DGS2”, which consists of a combination of “M2”, “L2DEC”, “UNT2”, “+CAL2” and “ −CAL2” parameters from addresses 01H, 06H, 20H to 27H, 40H to 47H, and 48H to 4FH of the EEPROM memory, respectively. The decimal point is placed according to the content of the “L2DEC” parameter. When SEL0=1 and SEL1=1, the ALD523D selects display set “DGS3”, which consists of a combination of “M3”, “L3DEC”, “UNT3”, “+CAL3” and “ −CAL3” parameters from addresses 01H, 07H, 28H to 2FH, 50H to 57H, and 58H to 5FH of the EEPROM memory, respectively. The decimal point is placed according to the content of the “L3DEC” parameter. Each of the “M1”, “M2”, and “M3” parameters is a 4-bit hexadecimal number located on the first line of the .CDS file (see Table 1 of the ALD523D Setup and Calibration Software User Guide for the data sheet layout). Each of these “M1”, “M2”, and “M3” parameters can have content data of “A”, “B”, “C” or “D” which corresponds to mode- A, mode-B, mode-C default mode, or mode-C clock and sign bit inverted polarity mode, respectively. Each of the “L1DEC”, “L2DEC”, and “L3DEC” parameters is an 8-bit hexadecimal number at addresses 05H, 06H, and 07H of the first line location of the .CDS file, respectively. Table 3. Display setting switch configurations and operations . GROUP J1 FUNCTION DISPLAY SETTING PIN 19 20 DISPLAY SET OPERATION SWITCHES SEL0 SEL1 UNIT MULTIPLIER DECIMAL MODE SELECTION 0 0 DGS0 UNT1 ±CAL1 J2/NoDec M1 1 0 DGS1 UNT1 ±CAL1 L1DEC M1 0 1 DGS2 UNT2 ±CAL2 L2DEC M2 1 1 DGS3 UNT3 ±CAL3 L3DEC M3 |
Numéro de pièce similaire - ALD523D |
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Description similaire - ALD523D |
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