FD2000 Ver la hoja de datos (PDF) - Unspecified

Número de pieza

componentes Descripción

Fabricante

FD2000

LCD Display Driver

Unspecified 

FD2000

Rev1.0

6.3. ADRAM (ADDITIONAL DATA RAM)

ADRAM is RAM used to store the ADATA display data. ADRAM has a capacity of 12 x 5 bits, and the stored

display data is displayed directly without the use of CGROM or CGRAM. The table below lists the correspondence

between the 4-bit ADRAM address loaded into AC and the display position on the LCD panel.

− When the ADRAM address loaded into AC is 0H. (Number of digit displayed: 12)

Display digit

1 2 3 4 5 6 7 8 9 10 11 12

ADRAM address(HEX) 0 1 2 3 4 5 6 7 8 9 A B

However, when the display shift is performed by specifying ADATA, the ADRAM address shifts as shown below.

Display digit

1 2 3 4 5 6 7 8 9 10 11 12

ADRAM address(HEX) 1 2 3 4 5 6 7 8 9 A B 0 (Left shift)

Display digit

1 2 3 4 5 6 7 8 9 10 11 12

ADRAM address(HEX) B 0 1 2 3 4 5 6 7 8 9 A (Right shift)

NOTE: The ADRAM addresses are expressed in hexadecimal.

ADRAM address

LSB

RA0

←

RA1 RA2

HEX

MSB

RA3

→

− Example: When the ADRAM address is AH.

LSB

MSB

RA0 RA1 RA2 RA3

0

1

0

1

NOTE: 5 x 7 dots ... 12-digit display 5 dots

5 x 8 dots ... 12-digit display 4 dots

5 x 9 dots ... 12-digit display 3 dots

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