PCF8811U/2DA/1 NXP [NXP Semiconductors], PCF8811U/2DA/1 Datasheet - Page 43
PCF8811U/2DA/1
Manufacturer Part Number
PCF8811U/2DA/1
Description
80 x 128 pixels matrix LCD driver
Manufacturer
NXP [NXP Semiconductors]
Datasheet
1.PCF8811U2DA1.pdf
(81 pages)
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NXP Semiconductors
PCF8811_4
Product data sheet
12.3.1 Basic command set
12.3.2 Extended command set
12.2 Initialization
12.3 Reset function
Table 21.
Reset is accomplished by applying an external reset pulse (active LOW) at pad RES.
When reset occurs within the specified time, all internal registers are reset, however the
RAM is still undefined. The state after reset is described in
be
V
A reset can also be achieved by sending a reset command. This command can be used
during normal operation but not to initialize the chip after power-on.
After reset the LCD driver has the following state:
After reset the LCD driver has the following state:
S[2:0]
011
100
101
110
111
DD1
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Display setting E = 0 and DAL = 0
Address commands X[6:0] = 0 and Y[3:0] = 0
V
No offset of the programming range (V
HV multiplier programming (V
4
After power-on, RAM data is undefined, the reset signal does not change the content
of the RAM
All LCD outputs at V
Initial display line set to line 0 (L[6:0] = 0)
Initial row set to row 0 (C[6:0] = 0)
Full display selected (P[6:0] = multiplex rate 1:80 or 1:64)
Display is not mirrored (MX = 0; MY = 0)
Internal oscillator is off
Power-save mode is on
No frame calibration is running
Display settings E = 0 and DAL = 0
0.3 V
goes HIGH; see
LCD
voltage multiplier (S[1:0] = 00)
is equal to 0, the HV multiplier is switched off (PC[1:0] = 00)
DD1
Multiplication settings
when V
DD1
Figure
Rev. 04 — 27 June 2008
SS
reaches V
(display off)
47.
…continued
PR
DD(min)
[5:0] = 0)
OFF
(or higher) within a maximum time t
Description
5
4
5
6
7
[2:0] = 0)
voltage multiplier
voltage multiplier
voltage multiplier
voltage multiplier
voltage multiplier
80 x 128 pixels matrix LCD driver
Section
12.3. Pad RES must
PCF8811
© NXP B.V. 2008. All rights reserved.
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