PCF2113DHSLASH4 datasheet(29/65 Pages) NXP

29 / 65 page

PCF2113_FAM_4

Product data sheet

Rev. 04 — 4 March 2008

29 of 65

NXP Semiconductors

PCF2113x

LCD controllers/drivers

9.4.3 Bit B

The character indicated by the cursor blinks when B = 1. The cursor character blink is

displayed by switching between display characters and all dots on with a period of

approximately 1 s, with

Hz.

The cursor underline and the cursor character blink can be set to display simultaneously.

9.5 Cursor or display shift

‘Cursor/display shift’ moves the cursor position or the display to the right or left without

writing or reading display data. This function is used to correct a character or move the

cursor through the display. In 2-line displays, the cursor moves to the next line when it

passes the last position of the line. When the displayed data is shifted repeatedly all lines

shift at the same time; displayed characters do not shift into the next line.

The Address Counter (AC) content does not change if the only action performed is shift

display, but increments or decrements with the ‘cursor display shift’.

9.6 Function set

9.6.1 Bit DL (parallel mode only)

Sets interface data width. Data is sent or received in bytes (DB7 to DB0) when DL = 1 or

in two nibbles (DB7 to DB4) when DL = 0. When 4-bit width is selected, data is

transmitted in two cycles using the parallel bus. In a 4-bit application DB3 to DB0 should

be left open-circuit (internal pull-ups). Hence in the ﬁrst ‘function set’ instruction after

power-on M, SL and H are set to logic 1. A second ‘function set’ must then be sent

(2 nibbles) to set M, SL and H to their required values.

‘Function set’ from the I2C-bus interface sets the DL bit to logic 1.

9.6.2 Bit M

Selects either 1 line

× 24 character display (M = 0) or 2 line × 12 character display (M = 1).

9.6.3 Bit SL

Selects MUX 1:9, 1 line

× 12 character display (independent of M and L). Only rows 1 to 8

and 17 are to be used. All other rows must be left open-circuit. The DDRAM map is the

same as in the 2 line

× 12 character display mode, however, the second line is not

displayed.

9.6.4 Bit H

When H = 0 the chip can be programmed via the standard 11 instruction codes used in

the PCF2116 and other LCD controllers.

When H = 1 the extended range of instructions will be used. These are mainly for

controlling the display conﬁguration and the icons, as shown in Section 10.

9.7 Set CGRAM address

‘Set CGRAM address’ writes bits DB5 to DB0 of the CGRAM address ACG into the

address counter (A5h to A0h). Data can then be written to or read from the CGRAM.

blink

osc

104448

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