PCF2104CUSLASH2 datasheet(45/56 Pages) MOTOROLA

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Table 11 Initialization by instruction, 4-bit interface. Not applicable for I2C-bus operation

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

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

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

(interface is 8-bits long).

Wait 40

µs

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

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 = 0

‘Function set’ (set interface to 4-bits long). Interface is 8-bits long.

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

‘Function set’ (interface is 4-bits long).

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

Specify number of display lines and voltage generator characteristic.

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

‘Display off’.

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

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

‘Clear display’.

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

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

‘Entry mode set’.

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

Initialization ends

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