PCF2119VU/2/F2 Ver la hoja de datos (PDF) - NXP Semiconductors.

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Fabricante

PCF2119VU/2/F2

LCD controllers/drivers

NXP Semiconductors. 

NXP Semiconductors

PCF2119x

LCD controllers/drivers

9. Display data RAM and ROM

9.1 DDRAM

The Display Data RAM (DDRAM) stores up to 80 characters of display data represented

by 8-bit character codes. RAM locations which are not used for storing display data can be

used as general purpose RAM.

The basic RAM to display addressing scheme is shown in Figure 6, Figure 7 and Figure 8.

With no display shift the characters represented by the codes in the first 32 RAM locations

starting at address 00h are displayed in line 1.

display

position

12345

DDRAM 00 01 02 03 04

address

1-line display

DDRAM

address

12345

00 01 02 03 04

12345

40 41 42 43 44

2-line display/MUX 1 : 9 mode

30 31 32

non-displayed DDRAM addresses

1D 1E 1F 20 21

4C 4D 4E 4F

non-displayed DDRAM address

14 15 16

0D 0E 0F 10 11

24 25 26 27

line 1

14 15 16

4D 4E 4F 50 51

64 65 66 67 line 2

mgk892

All addresses are shown in hex.

Fig 6. DDRAM to display mapping: no shift

DDRAM

address

1 23 4 5

27 00 01 02 03

1 23 4 5

67 40 41 42 43

2-line display/MUX 1 : 9 mode

All addresses are shown in hex.

Fig 7. DDRAM to display mapping: right shift

14 15 16

0C 0D 0E line 1

14 15 16

4C 4D 4E line 2

mgl536

PCF2119X_5

Product data sheet

Rev. 05 — 13 August 2009

© NXP B.V. 2009. All rights reserved.

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