PCF2114 查看數據表（PDF） - NXP Semiconductors.

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PCF2114

LCD controller/drivers

NXP Semiconductors. 

STEP

24

25

I2C BYTE

read data: 8 × SCL + master acknowledge; note 2

DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack

010010000

read data: 8 × SCL + no master acknowledge; note 2

DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack

010010011

DISPLAY

PHILIPS

PHILIPS

26 I2C STOP

PHILIPS

OPERATION

8 × SCL; code of letter ‘H’ is read first. During master

acknowledge code of ‘I’ is loaded into the I2C interface.

No master acknowledge; After the content of the I2C interface

register is shifted out no internal action is performed. No new

data is loaded to the interface register, Data Register (DR) is not

updated, Address Counter (AC) is not incremented and cursor is

not shifted.

Notes

1. X = don’t care.

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

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