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ADC574ATH bảng dữ liệu(PDF) 10 Page - Burr-Brown (TI) |
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ADC574ATH bảng dữ liệu(HTML) 10 Page - Burr-Brown (TI) |
10 / 10 page 10 ® ADC574A When AO is low, the byte addressed contains the 8MSBs. When AO is high, the byte addressed contains the 4LSBs from the conversion followed by four logic zeros which have been forced by the control logic. The left-justified formats of the two 8-bit bytes are shown in Figure 8. The design of the ADC574A guarantees that the AO input may be toggled at any time with no damage to the converter; the outputs which are tied together as illustrated in Figure 9 cannot be enabled at the same time. In the majority of applications the read operation will be attempted only after the conversion is complete and the STATUS output has gone low. In those situations requiring the earliest possible access to the data, the read may be started as much as 1.15 µs (t DD max + tHS min) before STATUS goes low. Refer to Figure 7 for these timing relationships. FIGURE 8. 12-Bit Data Format for 8-Bit Systems. Processor DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Converter DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 Word 1 Word 2 FIGURE 9. Connection to an 8-Bit Bus. 12/8 A STATUS DB11 (MSB) DB0 (LSB) Digital Common O ADC574A 28 27 26 25 24 23 22 21 20 19 18 17 16 15 2 4 Data Bus Address Bus A O |
Số phần tương tự - ADC574ATH |
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Mô tả tương tự - ADC574ATH |
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