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PCF8553DTT/AJ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P54P55-P55
PCF8553 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 3 — 27 March 2015 14 of 55
NXP Semiconductors
PCF8553
40 × 4 LCD segment driver
9. Possible display configurations
The possible display configurations of the PCF8553 depend on the number of active
backplane outputs required. A selection of display configurations is shown in Table 11
. All
of these configurations can be implemented in the typical systems shown in Figure 7
or
Figure 8
.
[1] 7 segment display has 8 segments/elements including the decimal point.
[2] 14 segment display has 16 segments/elements including decimal point and accent dot.
Fig 6. Example of displays suitable for PCF8553
Table 11. Selection of possible display configurations
Number of
Backplanes Icons Digits/Characters Dot matrix:
segments/
elements
7-segment
[1]
14-segment
[2]
4 160 20 10 160 dots (4 40)
3 120 15 7 120 (3 40)
28010580 dots (2 40)
1405240dots (1 40)
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PCF8553 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 3 — 27 March 2015 15 of 55
NXP Semiconductors
PCF8553
40 × 4 LCD segment driver
The host microcontroller manages the 2-line I
2
C-bus communication channel with the
PCF8553. The internal oscillator is used and the internal POR is enabled in the example.
The appropriate biasing voltages for the multiplexed LCD waveforms are generated
internally. The only other connections required to complete the system are the reset, the
power supplies (V
DD
, V
SS
, and V
LCD
) and the LCD panel chosen for the application.
The host microcontroller manages the 3-line SPI-bus communication channel with the
PCF8553. The internal oscillator is enabled. The appropriate biasing voltages for the
multiplexed LCD waveforms are generated internally. The only other connections required
to complete the system are reset, the power supplies (V
DD
, V
SS
, and V
LCD
) and the LCD
panel chosen for the application.
The resistance of the power lines must be kept to a minimum. A decoupling capacitor of at least
100 nF is recommended for the supplies.
Fig 7. Typical system configuration using I
2
C-bus, internal power-on reset enabled
The resistance of the power lines must be kept to a minimum. A decoupling capacitor of at least
100 nF is recommended for the supplies.
Fig 8. Typical system configuration using SPI-bus, internal power-on reset disabled
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P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P54P55-P55

PCF8553DTT/AJ

Mfr. #:
Buy PCF8553DTT/AJ
Manufacturer:
NXP Semiconductors
Description:
Latches 40 X 4 LCD segment driver
Lifecycle:
New from this manufacturer.
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