PCF2104CUSLASH2 datasheet(44/56 Pages) MOTOROLA

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Table 10 Initialization by instruction, 8-bit interface (note 1)

Note

1. X = don’t care.

STEP

DESCRIPTION

Power-on or unknown state

Wait 2 ms after VDD rises above VPOR

RS = 0; R/W = 0; DB7 = 0; DB6 = 0; DB5 = 1; DB4 = 1;

DB3 = X; DB2 = X; DB1 = X; DB0 = X

BF cannot be checked before this instruction. ‘Function set’

(interface is 8-bits long).

Wait 2 ms

RS = 0; R/W = 0; DB7 = 0; DB6 = 0; DB5 = 1; DB4 = 1;

DB3 = X; DB2 = X; DB1 = X; DB0 = X

BF cannot be checked before this instruction.‘Function set’

(interface is 8-bits long).

Wait more than 40

µs

RS = 0; R/W = 0; DB7 = 0; DB6 = 0; DB5 = 1; DB4 = 1;

DB3 = X; DB2 = X; DB1 = X; DB0 = X

BF cannot be checked before this instruction. ‘Function set’

(interface is 8-bits long).

BF can be checked after the following instructions. When BF is not checked, the

waiting time between instructions is the speciﬁed instruction time (see Table 3).

RS = 0; R/W = 0; DB7 = 0; DB6 = 0; DB5 = 1; DB4 = 1;

DB3 = N; DB2 = M; DB1 = X; DB0 = 0

‘Function set’ (interface is 8-bits long). Specify the number of display lines.

RS = 0; R/W = 0; DB7 = 0; DB6 = 0; DB5 = 0; DB4 = 0;

DB3 = 1; DB2 = 0; DB1 = 0; DB0 = 0

‘Display off’.

RS = 0; R/W = 0; DB7 = 0; DB6 = 0; DB5 = 0; DB4 = 0;

DB3 = 0; DB2 = 0; DB1 = 0; DB0 = 1

‘Clear display’.

RS = 0; R/W = 0; DB7 = 0; DB6 = 0; DB5 = 0; DB4 = 0;

DB3 = 0; DB2 = 1; DB1 = I/D; DB0 = S

‘Entry mode set’.

Initialization ends

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