PCF2119VU-2-F2 Ver la hoja de datos (PDF) - NXP Semiconductors.
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PCF2119VU-2-F2 Datasheet PDF : 79 Pages
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NXP Semiconductors
PCF2119x
LCD controllers/drivers
Table 41. 8-bit operation, 2-line display example; using external reset (character set ‘A’) …continued
Instruction
Step RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Display
Operation
22
:
:
23
Return_home
returns both display and cursor to the
0 0 0 0 0 0 0 0 1 0 PHILIPS
original position (address 0)
MICROCOM
16.12 I2C-bus operation, 1-line display
A control byte is required with most commands (see Table 42).
Table 42. Example of I2C-bus operation; 1-line display (using external reset, assuming pin SA0 = VSS)[1]
Step I2C-bus byte
Display
Operation
1
I2C-bus start
initialized; no display appears
2
slave address for write
SA6 SA5 SA4 SA3 SA2 SA1 SA0 R/W Ack
during the acknowledge cycle SDA will be
pulled-down by the PCF2119x
011101001
3
send a control byte for Function_set
control byte sets RS for following data bytes
CO RS 0 0 0 0 0 0 Ack
000000001
4
Function_set
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack
0 0 1 X0 0 0 0 1
selects 1-line display and VLCD = V0; SCL
pulse during acknowledge cycle starts
execution of instruction
5
Display_ctl
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack
000011101
turns on display and cursor; entire display
shows character code 20h (blank in
ASCII-like character sets)
6
Entry_mode_set
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack
000001101
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
7
I2C-bus start
for writing data to DDRAM, RS must be set
to 1; therefore a control byte is needed
8
slave address for write
SA6 SA5 SA4 SA3 SA2 SA1 SA0 R/W Ack
011101001
9
send a control byte for Write_data
CO RS 0 0 0 0 0 0 Ack
010000001
10
Write_data to DDRAM
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack P
010100001
writes ‘P’; the DDRAM has been selected at
power-on; the cursor is incremented by 1
and shifted to the right
11
Write_data to DDRAM
writes ‘H’
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Ack PH
010010001
12 to 15
:
PHILIP
writes ‘ILIP’
PCF2119X_5
Product data sheet
Rev. 05 — 13 August 2009
© NXP B.V. 2009. All rights reserved.
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