pcf8833 NXP Semiconductors, pcf8833 Datasheet - Page 56

• Manufacturer Part Number: pcf8833
• Description: Stn Rgb - 132 X 132 X 3 Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
6.2.42
When the Idle mode is selected (see Section 6.2.29) the frame frequency is determined from division factor DF8. In the
Idle mode the PCF8833 works in 8-colour mode and therefore a lower frame frequency can be chosen which will be the
same over the whole temperature range. Calculation of the frame frequency and determining the division factor is the
same as explained in Section 6.2.41.
When Partial mode is selected (see Sections 6.2.10 and 6.2.23) the same frame frequency will be used as for the full
Display mode in Idle mode.
Table 69 Frame frequency programming in 8-colour mode register bits; note 1
Note
1. X = don’t care.
6.2.43
The LCD supply voltage and the bias voltages, which can be chosen, depend on the Liquid Crystal (LC) that is used. In
equation (3) the relationship between the V
size (N) is given.
2003 Feb 14
-------------
V
handbook, full pagewidth
V
OFF
ON
STN RGB - 132
D/C
0
1
=
F
S
RAME FREQUENCY PROGRAMMING IN
ET BIAS SYSTEM
a
-----------------------------
a
2
2
+
+
N
N 2a
X
7
1
+
–
frequency
frame
2a
DF8
40
6
1
132
6
Fig.31 Segmented temperature frame frequency.
DFA
DF8
3 driver
5
0
11
ON
5
8-
/V
COLOUR MODE
OFF
DF8
ratio of LC parameters and the bias system (a) for a given display
4
0
DFB
4
56
DF8
35
3
0
3
DFC
49
DF8
2
1
2
DFD
DF8
79
1
1
1
T ( C)
MGU940
Objective specification
DF8
0
0
PCF8833
0
DEFAULT
C6H
35H
(3)