NJU6624C データシートの表示（PDF） - Japan Radio Corporation

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NJU6624C

14-CHARACTER 1-LINE DOT MATRIX LCD CONTROLLER DRIVER with SMOOTH SCROLL FUNCTION

Japan Radio Corporation  

NJU6624C

(1-6)Icon Display RAM (MK RAM)

The NJU6624C can display maximum 70 Icons.

The Icon Display can be controlled by writing the Data in MK RAM corresponds to the Icon.

The relation between MK RAM address and Icon Display position is shown below:

COM1

COM2

COM3

COM4

COM5

COM6

COM7

COMMK

1

SEG 1 2 3 4 5 6 7 8 910

----

----

----

----

----

----

----

----

70

- - - - 6667686970

Table 4. Correspondence among Icon Position, MK RAM Address and Data

MK RAM Address

( 1 0H - 1 D H)

D7

1 0000

10H 0

1 0001

11H 0

1 0010

12H 0

1 0011

13H 0

:

:

1 1101

1DH 0

Bits for Icon Display Position

D6

D5

D4

D3

D2

D1

D0

0 0 "1" "2" "3" "4" "5"

0 0 "5" "7" "8" "9" "10"

0 0 "11" "12" "13" "14" "15"

0 0 "16" "17" "18" "19" "20"

:

0 0 "66" "67" "68" "69" "70"

(1-7)Timing Generator

The timing generator generates a timing signals for the DD RAM, CG RAM and MK RAM and other internal

circuits.

RAM read timing for the display and internal operation timing for MPU access are separately generated, so that

they may not interfere with each other.

Therefore, when the data write to the DD RAM for example, there will be no undesirable influence, such as flicker-

ing, in areas other than the display area.

(1-8)LCD Driver

LCD Driver consists of 8-common driver and 70-segment driver.

The character pattern data are latched to the addressed Segment-register respectively. This latched data controls

display driver to output LCD driving waveform.

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