DS1481S Maxim Integrated Products, DS1481S Datasheet
DS1481S
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DS1481S Summary of contents
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... BUSY and SELECT OUT signals (pins 11 and 13 respectively). The next DS1481 connects its O1/BSY1 and O2/BSY2 to the first device’s I1 and I2 respectively. ENO of the first device connects to ENI of the second device. More DS1481s can be stacked in a similar manner. The last device’s I1 and I2 connect to BUSY and SELECT of the attached printer. ...
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The DS1481’s 3V operation insures compatibility with most low power parallel ports (i.e., portable computers). DEVICE OPERATION 1-Wire communication is executed in “time slots”. The DS1481 generates either a read/write bit “time slot” reset on the I/O pin. ...
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If after 480μs of low time the I/O line did not return high, either the I/O line has been shorted to ground or there is at least one 1-Wire device connected to the I/O line which is issuing an alarm ...
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EPP/ECP TRANSPARENT MODE When the DS1481 first powers transparent mode in which the three signal lines (auto line feed, busy and select) that pass through the part are directly connected by transmission gates. This allows ...
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Figure 2. CONNECTION TO PC TYPE PARALLEL PORTS +5 P14 Auto Feed P11 Busy P13 Select P2 Data 1 P3 Data 2 TO HOST Figure 3. CONNECTION TO MICROCONTROLLERS +5 DS80C320 P1.0 P1.1 P1.2 P1.3 The logic states of D/CLK ...
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Figure 4. TIMING DIAGRAM: HOST INTERFACE ENI VALID D/CLK VALID RES O1/BSY1 O2/BSY2 READ 0 (I/O) READ 1 (I/O) WRITE 1 (I/O) t SIO Figure 5. TIMING DIAGRAM: HOST INTERFACE ENI D/CLK VALID VALID RES O1/BSY1 O2/BSY2 WRITE 0 (I/O) ...
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Figure 6. TIMING DIAGRAM: HOST INTERFACE ENI VALID D/CLK RES VALID O1/BSY1 O2/BSY2 RESET (I/O) Figure 7. TIMING DIAGRAM: HOST INTERFACE ENI D/CLK VALID RES VALID O1/BSY1 O2/BSY2 t BLR t = 960 μs (MINIMUM) ( BLR t ...
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DETAILED PIN DESCRIPTION PIN TYPE V DC supply voltage. CC ENI I Chip enable, driven low to begin 1-Wire I/O. Driven low during time slot (to indicate a DS1481 busy condition). Set to state of I1 after time slot has ...
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ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Range Storage Temperature Range Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated ...
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AC ELECTRICAL CHARACTERISTICS: HOST INTERFACE PARAMETER Sample Time (For Bit Time Slot (For Bit Time Slot Recovery Time Data to Enable Hold Reset to Enable Hold Clock Low Time Clock Low to O1, O2 ...