pcf2119x-2 NXP Semiconductors, pcf2119x-2 Datasheet - Page 53

• Manufacturer Part Number: pcf2119x-2
• Description: Controllers/drivers
• Manufacturer: NXP Semiconductors

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Notes
1. X = don’t care.
2. SDA is left at high-impedance by the microcontroller during the read acknowledge.
STEP
24
25
26
‘read data’: 8
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack
0
‘read data’: 8
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack
0
I
2
C stop
1
1
0
0
SCL + master acknowledge; note 2
SCL + no master acknowledge; note 2
0
0
I
2
C BYTE
1
1
0
0
0
0
0
1
0
1
PHILIPS
PHILIPS
PHILIPS
DISPLAY
8
acknowledge code of ‘I’ is loaded into the I
no master acknowledge; after the content of the I
interface register is shifted out no internal action is performed;
no new data is loaded to the interface register, data register is
not updated, address counter is not incremented and cursor is
not shifted
SCL; code of letter ‘H’ is read first; during master
OPERATION
2
C interface
2
C-bus