PCF2113DUSLASH2SLASHF4 datasheet(55/65 Pages) NXP

55 / 65 page

PCF2113_FAM_4

Product data sheet

Rev. 04 — 4 March 2008

55 of 65

NXP Semiconductors

PCF2113x

LCD controllers/drivers

[1]

X = not relevant.

[2]

SDA is left at high-impedance by the microcontroller during the read acknowledge.

‘read data’: 8

× SCL + master acknowledge [2]

× SCL; content loaded into interface

during previous acknowledge cycle is

shifted out over SDA; MSB is DB7;

during master acknowledge content

of DDRAM address 01 is loaded into

the I2C-bus interface

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

Ack

PHILIPS

XXXXXXXX0

‘read data’: 8

× SCL + master acknowledge [2]

× SCL; code of letter ‘H’ is read ﬁrst;

during master acknowledge, code of

‘I’ is loaded into the I2C-bus interface

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

Ack

PHILIPS

010010000

‘read data’: 8

× SCL + master acknowledge [2]

no master acknowledge;

-after the content of the I2C-bus

interface register is shifted out no

internal action is performed;

-no new data is loaded into the

interface register;

-data register is not updated;

-address counter is not incremented

and cursor is not shifted

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

Ack

PHILIPS

010010011

I2C-bus stop

PHILIPS

Table 25.

Example of I2C-bus operation; 1-line display (using internal reset, assuming SA0 = VSS) [1] …continued

Step

I2C-bus byte

Display

Operation

Table 26.

Initialization by instruction, 8-bit interface [1]

Step

Instruction

Description

R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

internal reset

starting from power-on or unknown state

wait 2 ms

000011

XXXX

function set (interface is 8 bit long). Busy Flag (BF)

cannot be checked before this instruction

wait 2 ms

000011

XXXX

function set (interface is 8 bit long). BF cannot be

checked before this instruction

wait more than 40

µs:

000011

XXXX

function set (interface is 8 bit long). BF cannot be

checked before this instruction

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 10)

0000110M

function set (interface is 8 bit long); specify the

number of display lines

0000001000

display off

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