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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LTPH245 데이터시트(PDF) 48 Page - Seiko Instruments Inc |
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LTPH245 데이터시트(HTML) 48 Page - Seiko Instruments Inc |
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48 / 64 page  5-1 5 DRIVE METHOD 5.1 THERMAL HEAD DRIVE TIMING Input of print data Input of DAT and CLK transfer the print data to the shift register in the serial input. “High” means printing and “Low” means no-printing in DAT. DAT data is read in at the rising edge of the CLK inputs. The transferred line of data is stored in the latch register by turning LATCH to “Low”. Input of the head activation pulse Setting the DST on "High" drives the heat elements of the thermal head. Select the block to be activated and drive for the time calculated using the formula shown in "3.6 CONTROLLING THE HEAD ACTIVATION (DST) PULSE WIDTH", then set the DST to "Low". Figure 5-1 shows the example of timing chart of the thermal head driving. 1: The print data for next dot line can be transferred immediately after storing the print data into the latch register. Figure 5-1 Example of Timing Chart of the Thermal Head Driving CHAPTER CLK DAT DST Latching data Data transfer 1 LATCH Data transfer |
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