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LC74730M Arkusz danych(PDF) 8 Page - Sanyo Semicon Device |
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LC74730M Arkusz danych(HTML) 8 Page - Sanyo Semicon Device |
8 / 14 page Second byte Note: All these registers are set to 0 by a reset due to the RST pin. { COMMAND 3 (Horizontal display start position and horizontal size setup command) First byte Second byte Note: All these registers are set to 0 by a reset due to the RST pin. No. 4247-8/14 LC74730M Register content DA0 to DA7 Register name State Function Note 7 — 0 Second byte identification bit 6 — 0 5 HP5 0 (MSB) 1 4 HP4 0 1 3 HP3 0 1 2 HP2 0 1 1 HP1 0 1 0 HP0 0 (LSB) 1 The horizontal display start position is specified by the 6 bits HP0 to HP5. The weight of the low-order bit is 2 Tc. If HS is the horizontal start position then: 5 HS = Tc × (2Σ 2nHP n) n = 0 Where Tc is a single period of the LC oscillator connected the OSCIN and OSCOUT pins. Register content DA0 to DA7 Register name State Function Note 7 — 0 Second byte identification bit 6 — 0 5 VP5 0 (MSB) 1 4 VP4 0 1 3 VP3 0 1 2 VP2 0 1 1 VP1 0 1 0 VP0 0 (LSB) 1 The vertical display start position is specified by the 6 bits VP0 to VP5. The weight of the low-order bit is 2 H. If VS is the vertical display start position then: 5 VS = H × (2Σ 2nVP n) n = 0 Where H is horizontal period pulse period. Register content DA0 to DA7 Register name State Function Note 7 — 1 6 — 0 Command 3 identification code 5 — 1 Sets up the horizontal display position and the character size 4 — 1 in the horizontal direction. 3 HS21 0 1 Horizontal character size for the 2 HS20 0 second line 1 1 HS11 0 1 Horizontal character size for the first line 0 HS10 0 1 HS21 HS20 0 1 0 1 Tc per dot 2 Tc per dot 1 3 Tc per dot 1 Tc per dot HS11 HS10 0 1 0 1 Tc per dot 2 Tc per dot 1 3 Tc per dot 1 Tc per dot |
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