UPD6464A Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD6464A

ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR

NEC => Renesas Technology 

CONTENTS

µPD6464A,6465

1. COMMANDS .................................................................................................................................... 7

1.1 Command Format ................................................................................................................. 7

1.2 Command List ....................................................................................................................... 7

1.3 Power-ON Clear Function .................................................................................................... 8

2. COMMAND DETAILS ..................................................................................................................... 8

2.1 Video RAM Batch Clear Command ..................................................................................... 8

2.2 Display Control Command ................................................................................................... 9

2.3 Internal Video Signal Color Control Command .................................................................. 10

2.4 Background Control Command ........................................................................................... 10

2.5 Internal/external Mode Control, Crystal Oscillation Control Command .......................... 14

2.6 Video Signal Method Control Command ............................................................................ 15

2.7 Oscillation Method Control Command ............................................................................... 16

2.8 Display Position Control Command .................................................................................... 17

2.9 Write Address Control Command ....................................................................................... 19

2.10 Output Level Control Command .......................................................................................... 20

2.11 Character Size Control Command ....................................................................................... 21

2.12 Test Mode Command ............................................................................................................ 22

2.13 Display Character Control Command (2-byte contiguous command) ............................ 22

3. TRANSFERRING COMMANDS ..................................................................................................... 23

3.1 1-Byte Command .................................................................................................................. 23

3.2 2-Byte Command .................................................................................................................. 23

3.3 2-Byte Contiguous Command ............................................................................................. 23

3.4 Successive Command Input ................................................................................................ 24

3.4.1 When 2-byte contiguous command end code is not used ..................................... 24

3.4.2 When 2-byte contiguous command end code is used ............................................ 24

3.5 BUSY Period for Command Input ........................................................................................ 25

3.5.1 When inputting 1-byte or 2-byte command .............................................................. 25

3.5.2 When inputting 2-byte contiguous command .......................................................... 25

4. ADJUSTING ..................................................................................................................................... 27

4.1 Adjusting Oscillation Frequency ......................................................................................... 27

4.1.1 Adjusting ×4 multiplier and crystal oscillation frequency ...................................... 27

4.1.2 Adjusting LC oscillation frequency (dot clock) ....................................................... 27

4.2 Test Mode Clear Command .................................................................................................. 28

4.3 Clamp Level of Video Signal ................................................................................................ 28

5. COMPOSITE SYNC. SIGNAL SEPARATION CIRCUIT ................................................................. 30

6. CHARACTER PATTERN DATA .................................................................................................... 32

6.1 Standard Character Patterns of the µPD6464A .................................................................. 33

6.2 Standard Character Patterns of the µPD6465 .................................................................... 36

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