UPD6462GS datasheet(19/60 Pages) NEC

19 / 60 page

µPD6461, 6462

2. COMMANDS

2.1 COMMAND FORMAT

Control commands are serially input in 8-bit units with a variable word length. There are three types of commands: 1-

byte commands consisting of eight bits including an instruction and data, 2-byte commands consisting of sixteen bits

including an instruction and data, and a 2-byte continuous command which can be input in an abbreviated format.

Commands are input with the MSB first or LSB first according to the specified mask option.

2.2 COMMANDS AND THEIR BITS

(1) For MSB first

1-byte commands

2-byte commands

Note

Not to be used

2-byte continuous command

Note

C7 bit is “don’t care” at the

µPD6462. However, this data sheet explains the µPD6462 with “0” in the C7 bit.

(MSB)

Function

Video RAM batch clear

00000000

Character display control

0001

BL1

BL0

Background/rim color control

0010

BFC

3-channel independent display on/off

01110

DOA

DOB

DOC

Character reverse on/off

0011100

BCRE

(MSB)

Function

D15 D14 D13 D12 D11 D10 D9

Character display position control

Write address control

AR3 AR2 AR1 AR0 AC4 AC3 AC2 AC1 AC0

Output pin control

VC2

VC1

AR3 AR2 AR1 AR0

Character size control

AR3 AR2 AR1 AR0

3-channel independent background control

BA1 BA0 BFA BB1 BB0 BFB BC1 BC0 BFC

Test modeNote

(MSB)

Function

D15 D14 D13 D12 D11 D10 D9

Displayed character control

VC2

Note

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