PCF2113EU2 datasheet(59/72 Pages) PHILIPS

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Table 18 Initialization by instruction, 4-bit interface; not applicable for I2C-bus operation

STEP

DESCRIPTION

power-on or unknown state

Wait 2 ms after internal reset has been applied

R/W

DB7

DB6

DB5

DB4

BF cannot be checked before this instruction

000011

function set (interface is 8 bits long)

Wait 2 ms

R/W

DB7

DB6

DB5

DB4

BF cannot be checked before this instruction

000011

function set (interface is 8 bits long)

Wait 40

µs

R/W

DB7

DB6

DB5

DB4

BF cannot be checked before this instruction

000011

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)

R/W

DB7

DB6

DB5

DB4

function set (set interface to 4 bits long)

000010

interface is 8 bits long

000010

function set (interface is 4 bits long)

specify number of display lines

000000

001000

display off

000000

clear display

000001

000000

entry mode set

I/D

Initialization ends

PCF2113EU2 数据表(PDF) 59 Page - NXP Semiconductors

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