NJU6635CH 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU6635CH

16-CHARACTER 2-LINE DOT MATRIX LCD CONTROLLER DRIVER

Japan Radio Corporation  

NJU6635

g) Function Set

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 1 DL A ∗ M1 M0

∗=Don’t Care

Function set instruction which sets the interface data length, the addressing mode for the DD

RAM, 1-line or 2-line display, and Pin configuration mode, is executed when the code ”1” is written

into DB5 and the codes of (DL), (A), (M1) and (M0) are written into DB4 (DL), DB3 (A), DB1 (M1),

and DB0 (M0) as shown below (character font is fixed 5 x 8 dots).

Note) This function set instruction must be performed at the head of the program prior to all other instructions

(except Busy flag/Address read). This function set instruction can not be executed afterwards unless

the interface data length change.

DL

FUNCTION

1

Set the interface data length to 8 bits (DB7 to DB0)

0

Set the interface data length to 4 bits (DB7 to DB4)

A couple of data must be sent or received.

A

FUNCTION

0

Set the Addressing Mode 1 for the DD RAM

1

Set the Addressing Mode 2 for the DD RAM

M1

FUNCTION

0

Set the 32-Character 1-Line Display

1

Set the 16-Character 2-Line Display

M0

FUNCTION

0

Set the Pin configuration mode A for Common and Segment Driver (Refer to cord.)

1

Set the Pin configuration mode B for Common and Segment Driver (Refer to cord.)

h) Set CG RAM Address

RS R/W DB7 DB6 DB5 DB4

Code 0 0 0 1 ∗ A

← Higher order bit →

DB3 DB2 DB1 DB0

AAAA

← Lower order bit →

Set CG RAM address instruction is executed when the code “1” is written into DB6 and the

address is written into DB4 to DB0 as shown above.

The address data mentioned by binary code “AAAAA “ is written into the address counter (AC)

together with the CG RAM addressing condition. After this instruction, the data writing/reading is

performed into/from the CG RAM.

CG RAM

CG RAM address

: (00)H – (1F)H

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