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PCF2113DU/2/F4 数据表(PDF) 54 Page - NXP Semiconductors |
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PCF2113DU/2/F4 数据表(HTML) 54 Page - NXP Semiconductors |
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54 / 65 page  PCF2113_FAM_4 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 04 — 4 March 2008 54 of 65 NXP Semiconductors PCF2113x LCD controllers/drivers 7I2C-bus start to write data to DDRAM, RS must be set to 1 so a control byte is needed 8 slave address for write SA6 SA5 SA4 SA3 SA2 SA1 SA0 R/WAck 011101001 9 send a control byte for ‘write data’ Co RS 0 0 0 0 0 0 Ack 010000001 10 ‘write data’ to DDRAM writes ‘P’; the DDRAM is selected at power-up; the cursor is incremented by 1 and shifted to the right DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack P 010100001 11 ‘write data’ to DDRAM writes ‘H’ DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack PH 010010001 12 to 15 : writes ‘ILIP’ : 16 ‘write data’ to DDRAM writes ‘S’ DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack PHILIPS 010100111 17 (optional I2C-bus stop) I2C-bus start + slave address for write (as step 8) PHILIPS 18 control byte Co RS 0 0 0 0 0 0 Ack PHILIPS 100000001 19 return home sets DDRAM address 0 in address counter (also returns shifted display to original position; DDRAM contents unchanged); this instruction does not update the Data Register (DR) DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack PHILIPS 000000101 20 I2C-bus start PHILIPS 21 slave address for read during the acknowledge cycle the content of DR is loaded into the internal I2C-bus interface to be shifted out; in the previous instruction neither a ‘set address’ nor a ‘read data’ has been performed, so the content of the DR was unknown; the R/W has to be set to 1 while still in the I2C-bus write mode SA6 SA5 SA4 SA3 SA2 SA1 SA0 R/WAck PHILIPS 011101011 22 control byte for read DDRAM content is read from the following instructions Co RS 0 0 0 0 0 0 Ack PHILIPS 011000001 Table 25. Example of I2C-bus operation; 1-line display (using internal reset, assuming SA0 = VSS) [1] …continued Step I2C-bus byte Display Operation |
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