UPD6464A Просмотр технического описания (PDF) - NEC => Renesas Technology
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UPD6464A
NEC => Renesas Technology
UPD6464A Datasheet PDF : 52 Pages
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µPD6464A,6465
1. COMMANDS
1.1 Command Format
Control commands are of variable length in 8-bit units and are input in serial.
Three types of commands are available: 1-byte commands consisting of 8 bits of instruction and data in
combination, 2-byte commands of 16 bits of instruction and data in combination, and a 2-byte contiguous
command that can be abbreviated for input.
Input command data from the MSB first.
1.2 Command List
1-byte commands
Function
Video RAM batch clear
Display control
Internal video signal color control
Background control
Internal/external mode control, crystal
oscillation control
Video signal method control
Oscillation method control
(MSB)
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
0
0
0
0
0
0
1
D0
LC
BL1
BL0
0
0
1
0
R
G
B
0
0
0
1
1
0
BS1
BS0
0
0
1
0
0
0
E/I
0
XOSC
0
1
0
0
1
N/P2 N/P1 N/P0
0
1
0
1
0
0
Xfc
0
2-byte commands
Function
(MSB)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Display position control 1 0 0 0 0 0 V4 V3 V2 V1 V0 H4 H3 H2 H1 H0
Write address control 1 0 0 0 1 0 0 AR3 AR2 AR1 AR0 AC4 AC3 AC2 AC1 AC0
Output level control 1 0 0 1 0 0 0 VPD 0 0 0 0 0 1 VC1 VC0
Character size control 1 0 0 1 1 0 0 0 0 S0 0 0 AR3 AR2 AR1 AR0
Test mode Note
1 0 1 1 0 0 0 0 T7 T6 T5 T4 T3 T2 T1 T0
Note Must not be used.
2-byte contiguous command
(MSB)
Function
Display character
control
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
1
1
0
0
0
0
BL
0
Note
C7
C6
C5
C4
C3
C2
C1
C0
Note Fixed to "0" (µPD6464A)
7
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