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PCF2113DU/2/F4 数据表(PDF) 53 Page - NXP Semiconductors |
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PCF2113DU/2/F4 数据表(HTML) 53 Page - NXP Semiconductors |
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53 / 65 page  PCF2113_FAM_4 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 04 — 4 March 2008 53 of 65 NXP Semiconductors PCF2113x LCD controllers/drivers 16.6 I2C-bus operation, 1-line display A control byte is required with most commands (see Table 25). 13 ‘write data’ to CGRAM/DDRAM writes ‘M’ 1 0 01001101 PHILIPS M 14 to 18 : writes ‘ICROC’ : 19 ‘write data’ to CGRAM/DDRAM writes ‘O’ 1 0 01001111 PHILIPS MICROCO 20 entry mode set sets mode for display shift at the time of write 0 0 00000111 PHILIPS MICROCO 21 ‘write data’ to CGRAM/DDRAM writes ‘M’; display is shifted to the left; the 1st and 2nd lines shift together 1 0 01001101 HILIPS ICROCOM 22 return home returns both the display and cursor to the original position (address 0) 0 0 00000010 PHILIPS MICROCOM Table 24. 8-bit operation, 2-line display example; using internal reset …continued Step Instruction Display Operation RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Table 25. Example of I2C-bus operation; 1-line display (using internal reset, assuming SA0 = VSS) [1] Step I2C-bus byte Display Operation 1I2C-bus start initialized; no display appears 2 slave address for write during the acknowledge cycle SDA is pulled down by the PCF2113x SA6 SA5 SA4 SA3 SA2 SA1 SA0 R/WAck 011101000 3 send a control byte for ‘function set’ control byte sets RS for the following data bytes Co RS 0 0 0 0 0 0 Ack 000000001 4 function set selects 1-line display and VLCD = VA; SCL pulse during acknowledge cycle starts execution of instruction DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack 001X 00001 5 display control turns on display and cursor; entire display shows character 20h (blank in ASCII-like character sets) DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack 000011101 6 entry mode set sets mode to increment the address by 1 and to shift the cursor to the right at the time of write to the DDRAM or CGRAM; display is not shifted DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack 000001101 |
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