KF2002-GF84A Datasheet | ROHM

Features 1) Both the circuit voltage and the voltage required during printing are 3.3V ; this allows the design of plete printer assemblies with energy-saving low power consumption. 2) KF2002-GF84A has a resistance value of 176Ω and can take a maximum current of 8.5V for printing. This is useful in applications where the peak voltage is restricted. 3) Because the connectors accept 1.25-mm pitch FFC (full flat cables) it is possible to reduce the size of printer mechanism control boards. 4) 2-inch, 3-inch and 4-inch series are available. !External dimensions (Units : mm) MAX.16.5 2.1±0.3 54 48 (Effective Print Width) Dot #384 Dot #1 Max.1.7 (14) (11.35) (1.1) Exposed Conductor Side ax . φ1 4. Connector No.28 No.1 Insert Direction 1/4 Printheads !Equivalent circuit VH L-GND P-GND 1,2,3,26,27,28 18 13,14,15,16,17 6 23 22 21 10 9 8 5 4 3 2 1 DOT #384 DOT #1 STB6 STB5 STB4 STB3 STB2 STB1 LATCH REGISTER DI CLK DO VDD NC TM TM 25 6 4 7 19, 20, 24 11 12 SHIFT REGISTER THERMISTOR 30kΩ B:3950 Fig.1 2/4 Printheads !Pin assignments No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Circuit VH VH VH DO LAT CLK VDD STB1 STB2 STB3 TM TM P-GND P-GND No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Circuit P-GND P-GND P-GND L-GND NC NC STB4 STB5 STB6 NC DI VH VH VH L-GND : LOGIC GROUND P-GND : POWER GROUND !Timing chart tw CLK CLOCK (CLK) t setup DI DATA IN (DI) "High":BLACK "Low" :WHITE DATA OUT (DO) "High":BLACK "Low" :WHITE t hold DI td DO t setup LAT LATCH (LAT) "High":HOLD "Low" :THROUGH tw LAT STROBE (STB) t hold LAT t setup STB tdo DRIVER OUT tdo Fig.2 3/4 Printheads !Characteristics Parameter Effective printing width Dot pitch Total dot number Average resistance value Applied voltage Applied power Print cycle Pulse width Maximum number of dots energized simultaneously Maximum clock frequency Maximum roller diameter Running life / pulse life Operating temperature Symbol - - - Rave VH PO SLT...