PC0801ARS-F datasheet(43/65 Pages) POWERTIP

43 / 65 page

ST7066U

V2.0

2001/03/01

20/42

$" DL : Interface data length control bit

When DL = "High", it means 8-bit bus mode with MPU.

When DL = "Low", it means 4-bit bus mode with MPU. So to speak, DL is a signal to select

8-bit or 4-bit bus mode.

When 4-bit bus mode, it needs to transfer 4-bit data by two times.

$" N : Display line number control bit

When N = "Low", it means 1-line display mode.

When N = "High", 2-line display mode is set.

$" F : Display font type control bit

When F = "Low", it means 5 x 8 dots format display mode

When F = "High", 5 x11 dots format display mode.

No. of Display Lines Character Font

Duty Factor

5x8

1/8

5x11

1/11

5x8

1/16

" Set CGRAM Address

Set CGRAM address to AC.

This instruction makes CGRAM data available from MPU.

" Set DDRAM Address

Set DDRAM address to AC.

This instruction makes DDRAM data available from MPU.

When 1-line display mode (N = 0), DDRAM address is from "00H" to "4FH".

In 2-line display mode (N = 1), DDRAM address in the 1st line is from "00H" to "27H", and

DDRAM address in the 2nd line is from "40H" to "67H".

AC6 AC5 AC4 AC3 AC2

Code

DB7

DB6

DB5

DB4

DB1

DB2

DB3

AC1 AC0

DB0

AC5 AC4 AC3 AC2

Code

DB7

DB6

DB5

DB4

DB1

DB2

DB3

AC1 AC0

DB0

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