UPD6462 NEC, UPD6462 Datasheet - Page 38

• Manufacturer Part Number: UPD6462
• Description: CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY 12 ROWS x 24 COLUMNS
• Manufacturer: NEC

38
4. COMMAND TRANSFER
4.1 1-BYTE COMMANDS
4.2 2-BYTE COMMANDS
4.3 2-BYTE CONTINUOUS COMMAND
which the specifications for the color, blinking, reversing, and V
command then continuously transfer only the second bytes (character pattern addresses) of the commands.
code for second-byte continuous input) then transfer the newly modified first byte.
When inputting a 2-byte command, keep the CS signal low between the first and second bytes of the command.
The 2-byte continuous command is used to write characters to video RAM. When continuously writing characters for
When changing any part of the first byte, end continuous input (by setting the CS signal to high or transferring the end
DATA
DATA
CLK
CS
DATA
DATA
CLK
CS
DATA
DATA
CLK
CS
D7 - D0
D0 - D7
First byte
First byte
First byte
First byte
D15 - D8
D15 - D8
D0 - D7
D0 - D7
MSB first: Input starting from bit D7
LSB first: Input starting from bit D0
Second byte
Second byte
Second byte
Second byte
D8 - D15
D8 - D15
D7 - D0
D7 - D0
C2
channel are the same, transfer the first byte of the first
Second byte
Second byte
MSB first
First byte: D15 to D8
Second byte: D7 to D0
LSB first
First byte: D0 to D7
Second byte: D8 to D15
D8 - D15
D7 - D0
MSB first
LSB first
PD6461, 6462