PCF2119VU/2 Ver la hoja de datos (PDF) - Philips Electronics

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PCF2119VU/2

LCD controllers/drivers

Philips Electronics 

Philips Semiconductors

LCD controllers/drivers

Product specification

PCF2119X

7.17 Reset function

The PCF2119x must be reset externally when power is turned on. The reset executes a ‘clear display’, requiring

165 oscillator cycles. After the reset the chip has the state shown in Table 4.

Table 4 State after reset

STEP

1

2

3

4

5

6

7

8

9

10

11

FUNCTION

CONTROL BIT STATE

CONDITION

clear display

entry mode set

I/D = 1

+1 (increment)

S=0

no shift

display control

D=0

display off

C=0

cursor off

B=0

cursor character blink off

function set

DL = 1

8-bit interface

M=0

1-line display

H=0

normal instruction set

SL = 0

MUX 1 : 18 mode

default address pointer to DDRAM; the Busy Flag (BF) indicates the busy state (BF = 1) until

initialization ends; the busy state lasts 2 ms; the chip may also be initialized by software; see

Tables 18 and 19

icon control

IM, IB = 00

icons/icon blink disabled

display/screen configuration

L = 0; P = 0; Q = 0

default configurations

VLCD temperature coefficient

set VLCD

I2C-bus interface reset

TC1 = 0; TC2 = 0

default temperature coefficient

VA = 0; VB = 0 (VLCD generator off)

set HVgen stages

S1 = 1, S0 = 0

HVgen set to 3 internal stages

(4 voltage multipliers)

2003 Jan 30

21

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