pcf8549 NXP Semiconductors, pcf8549 Datasheet - Page 24

• Manufacturer Part Number: pcf8549
• Description: 65 X 102 Pixels Matrix Lcd Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
APPLICATION INFORMATION
Table 9 programming example for PCF8549
1997 Nov 21
STEP
65
10
12
13
14
11
1
2
3
4
5
6
7
8
9
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
I
I
2
2
102 pixels matrix LCD driver
C start
C start
0
0
0
0
1
0
0
0
0
1
1
1
1
0
0
0
1
0
0
1
1
1
0
1
1
0
1
0
1
1
0
1
0
1
1
1
1
0
0
1
0
0
0
1
0
1
0
0
1
0
0
0
1
0
1
1
0
1
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
24
DISPLAY
Slave address for write
Control byte with cleared C
and D/C set to 0.
Function Set
PD = 0; V = 0; select extended
instruction set (H = 1 mode)
Set Bias System 2. This is the
recommended Bias System for a
multiplex rate 1:65
set V
V
Please note: The required
voltage is depending on the
liquid.
Function Set
PD = 0; V = 0; select normal
instruction set (H = 0 mode)
Display Control
set normal mode
(D = 1 and E = 0)
Restart: To write into the Display
RAM the D/C must be set to 1;
therefore a control byte is
needed.
Slave address for write
Control byte with cleared C
and D/C set to 1.
Data Write
Y and X are initialized to 0 by
default, so they aren’t set here
Data Write
Data Write
OP
is set to a +16
OP
OPERATION
Product specification
b [V].
PCF8549
O
O
bit
bit