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AS1116-BQFT Datasheet(PDF) 10 Page - ams AG |
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AS1116-BQFT Datasheet(HTML) 10 Page - ams AG |
10 / 20 page www.austriamicrosystems.com Revision 1.04 10 - 20 AS1116 Datasheet - D e t a i l e d D e s c r i p t i o n Note: Write operation: D14=0; Read operation: D14=1. The Shutdown Register controls AS1116 shutdown mode. Decode Enable Register (0x09) The Decode Enable Register sets the decode mode. BCD/HEX decoding (either BCD code – characters 0:9, E, H, L, P, and -, or HEX code – characters 0:9 and A:F) is selected by bit D2 (page 14) of the Feature Register. The Decode Enable Register is used to select the decode mode or no-decode for each digit. Each bit in the Decode Enable Regis- ter corresponds to its respective display digit (i.e., bit D0 corresponds to digit 0, bit D1 corresponds to digit 1 and so on). Table 10 lists some examples of the possible settings for the Decode Enable Register bits. Note: A logic high enables decoding and a logic low bypasses the decoder altogether. When decode mode is used, the decoder looks only at the lower-nibble (bits D3:D0) of the data in the Digit-Registers, disregarding bits D6:D4. Bit D7 sets the decimal point (SEG DP) independent of the decoder and is positive logic (bit D7 = 1 turns the decimal point on). Table 10 lists the code-B font; Table 11 lists the HEX font. When no-decode mode is selected, data bits D7:D0 of the Digit-Registers correspond to the segment lines of the AS1116. Table 12 shows the 1:1 pairing of each data bit to the appropriate segment line. Diagnostic Digit 0 X 1 0 1 0 1 0 0 N/A Diagnostic Digit 1 X 1 0 1 0 1 0 1 N/A Diagnostic Digit 2 X 1 0 1 0 1 1 0 N/A Diagnostic Digit 3 X 1 0 1 1 0 1 1 N/A Diagnostic Digit 4 X 1 0 1 1 0 0 0 N/A Diagnostic Digit 5 X 1 0 1 1 0 0 1 N/A Diagnostic Digit 6 X 1 0 1 1 0 1 0 N/A Diagnostic Digit 7 X 1 0 1 1 0 1 1 N/A Table 8. Shutdown Register Format (Address (HEX) = 0x0C)) Mode HEX Code Register Data D7 D6 D5 D4 D3 D2 D1 D0 Shutdown Mode, Reset Feature Register to Default Settings 0x00 0 XXXX XX 0 Shutdown Mode, Feature Register Unchanged 0x80 1 XXXX XX 0 Normal Operation, Reset Feature Register to Default Settings 0x01 0 XXXX XX 1 Normal Operation, Feature Register Unchanged 0x81 1 XXXX XX 1 Table 9. Decode Enable Register Format Examples Decode Mode HEX Code Register Data D7 D6 D5 D4 D3 D2 D1 D0 No decode for digits 7:0 0x00 0000000 0 Code-B/HEX decode for digit 0. No decode for digits 7:1 0x01 00000001 Code-B/HEX decode for digit 0:2. No decode for digits 7:3 0x07 00000111 Code-B/HEX decode for digits 0:5. No decode for digits 7:6 0x3F 00111111 Code-B/HEX decode for digits 0,2,5. No decode for digits 1, 3, 4, 6, 7 0x25 00100101 Table 7. Register Address Map Register Address Page D15 D14 D13 D12 D11 D10 D9 D8 D7:D0 |
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