ald523d Advanced Linear Devices Inc (ALD), ald523d Datasheet
ald523d
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ald523d Summary of contents
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... DUAL SLOPE A/D 4-PHASE CONTROLLER SERIAL BINARY TO 6½ -DIGIT DECIMAL CONVERTER EEPROM MEMORY SERIAL I/O CONTROLLER INTERFACE LOGIC ALD523D BLOCK DIAGRAM digit decimal converter http://www.aldinc.com FUNCTIONS CONTROL SELECTORS LOGIC CHARACTER DISPLAY DISPLAY MODULE MODULE CONTROLLER EEPROM Crystal oscillator frequency MHz ...
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... High precision DC voltage meters Dedicated precision monitors High resolution A/D converter with display High accuracy and low noise weigh scale systems Multifunction precision measurement instruments Serial binary input to decimal/character display converter Portable battery operated display systems ALD523D PIN CONFIGURATIONS CALIBRATED REFERENCE (MODE-A) ALD523D 1 COUT 2 SDA ...
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... The internal system clock of the ALD523D runs at a frequency which can be selected at divide- 64) rate of the crystal (or external) clock frequency. The ALD523D offers display settings, known as display sets, namely “DGS1”, “DGS2” and “DGS3”. “DGS1” also has an optional hardware decimal point setting mode, known as “ ...
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... The display only mode (mode-C) is primarily intended for receiving a ready external serial binary data, converting and processing the data, and showing the processed data on the CDM. In this mode, the ALD523D runs its internal display controller to manage, process, and display the CHARACTER ...
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... After an external instrument or processor sets the DVCS to logic 0, the DATIN terminal of the ALD523D is ready for serial input data stream. The ALD523D reads the first bit of the serial input data stream on DATIN and sends a serial clock pulse on the SCLK as an acknowledge signal to the external instrument or processor ...
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... The serial clock now becomes SCLK, and the sign bit polarity is defined as logic “1” for a positive sign, and logic “0” for a negative sign (see Table 1 of the ALD523D Setup and Calibration Software User Guide). SELECTING AND CONFIGURING DISPLAY LINE ...
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... The first line of the 1-line x 16-character or the second line of the 2-line x 16-character CDM is divided into a DATA field and a UNIT field, as illustrated in figure 5. The ALD523D converts a 24-bit plus sign bit serial data stream to a 7-digit decimal number with +/- sign. The 7-digit number, when displayed with +/- sign and a decimal point, takes up a total of 9 characters ...
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... 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 “ ...
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... Table 1 and Table 3 of the ALD523D Setup and Calibration Software User Guide for the data sheet layout and the hexadecimal codes, respectively). When “DGS0” or “DGS1” display ...
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... When B1=1 and B2=0, the ALD523D instructs the display module to blank the last display digit, and the display now displays a 6-digit number. ALD523D blanks the last two digits of the display, and the display now show only a 5-digit number. Likewise at B1=1 and B2=1, the ALD523D sets the display to show only the first 4 digits of the number ...
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... Table 7. Averaging selection switch combination for mode mode-B, and mode-C When DSA1=0 and DSA2=0, the ALD523D is set to non- averaging mode. At DSA1=1 and DSA2=0, the ALD523D utilizes the “AVG1” parameter set at address 02H of the EEPROM memory. At DSA1=0 and DSA2=1, the ALD523D utilizes “AVG2” at address 03H of the EEPROM. At DSA1=1 and DSA2=1, the ALD523D utilizes “ ...
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... ALD523D 12/01 Upon entering reference calibration mode, measurement data on the ALD523D is transmitted serially to the PC via SCLK and DATOUT pins. The ALD523D sets the SCLK pin to logic “0” state with the first bit of the serial data transmitted simultaneously via DATOUT pin. The PC reads the first bit on DATOUT and sends a serial clock pulse on the DVCS line as the acknowledge signal ...
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... CAL, respectively for the setup and calibration mode. A logical “0” state on DVCS pin with a logical “0” on CAL pin set by the PC put the ALD523D in the Data Transfer from PC mode. © © © © 2001 Advanced Linear Devices, Inc., 415 Tasman Drive, Sunnyvale, California 94089-1706, Tel: (408) 747-1155, Fax: (408) 747-1286 ...
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... Advanced Linear Devices, Inc., 415 Tasman Drive, Sunnyvale, California 94089-1706, Tel: (408) 747-1155, Fax: (408) 747-1286 ALD523D 12/01 CHARACTER DISPLAY MODULE The ALD523D controller is designed for easy setting of industry standard Character Display Modules (CDM) such as 1 line by 16-character or 2-line by 16-character LCD or VFD display modules. These Character Display Modules consist of high contrast liquid crystal or vacuum fluorescence panels ...
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... Low Input Voltage High Input Voltage Input Leakage Current Output Characteristics Low Output Voltage High Output Voltage © © © © 2001 Advanced Linear Devices, Inc., 415 Tasman Drive, Sunnyvale, California 94089-1706, Tel: (408) 747-1155, Fax: (408) 747-1286 ALD523D 12/01 3 Symbol Min Typ Max ...
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... ESD Sensitive Device. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to device, and may affect device reliability and performance ALD523D handshake using page write mode. 5 Calibration delay time (t ) may be as short as 7 µs, if start of auto zero phase cycle time could be determined. For asynchronous ...
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... NOT VALID IN FROM PC ________________________________________ • the number of serial data bits, and m is the integer …, n. © © © © 2001 Advanced Linear Devices, Inc., 415 Tasman Drive, Sunnyvale, California 94089-1706, Tel: (408) 747-1155, Fax: (408) 747-1286 ALD523D 12/ SCL SCH ...
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... ALD523D TO PC MODE-A REFERENCE CALIBRATION TIMING OUT TO ALD500 OUT TO t ALD500 AZ CAL IN FROM COUT IN FROM ALD500 SCLK OUT TO PC DVCS IN FROM PC DATOUT NOT VALID OUT TO PC EXPANDED VIEW SCLK OUT DVCS IN FROM DATOUT BIT 22 NOT VALID ...
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... ALD523D PIN IDENTIFICATION FOR CALIBRATED REFERENCE MODE (MODE-A) PIN # SYMBOL 1 COUT 2 SDA 3 S1, SCL DSA1 DSA2 XTAL2 10 XTAL1 11 COUT 12 CAL 13 PWRCS DVCS 19 SEL0 SEL1 DEC1 DGND 23 DEC2 ...
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... ALD523D PIN IDENTIFICATION FOR DISPLAY ONLY MODE (MODE-C) PIN # SYMBOL SDA 3 SCL DSA1 DSA2 XTAL2 10 XTAL1 CAL 13 PWRCS DVCS 19 SEL0 SEL1 DEC1 DGND 23 DEC2 DATIN 25 SCLK ...