PCF8531U Ver la hoja de datos (PDF) - Philips Electronics

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PCF8531U

34 × 128 pixel matrix driver

Philips Electronics 

Philips Semiconductors

34 × 128 pixel matrix driver

Product specification

PCF8531

Table 6 Explanations for symbols in Table 5

BIT

PD

V

IM

H[1:0](1)

D and E

HVE

PRS

TC[2:0]

S[1:0]

0

chip is active

horizontal addressing

normal mode; full display + icons

see Table 7

see Table 7

voltage multiplier disabled

VLCD programming range LOW

see Table 7

see Table 7

1

chip is in Power-down mode

vertical addressing

icon mode; only icons are displayed

voltage multiplier enabled

VLCD programming range HIGH

Note

1. The H-bits identify the command page (use set default H[1:0] command to set H[1:0] = 0.

Table 7 Description of bits H, D and E, TC and S

Table 8 Multiplex rates

BITS

VALUE

DESCRIPTION

MUX RATE

M1

M0

Command page (H)

1 : 17

0

0

H[1:0]

00

function and RAM command

1 : 26

1

0

page

1 : 34

0

1

01

display setting command page

10

HV-gen command page

Display modes (D, E)

D and E 00

10

01

11

display blank

normal mode

all display segments

inverse video mode

Temperature coefficient (TC)

TC[2:0] 000

001

010

011

100

101

110

111

temperature coefficient 0

temperature coefficient 1

temperature coefficient 2

temperature coefficient 3

temperature coefficient 4

temperature coefficient 5

temperature coefficient 6

temperature coefficient 7

Voltage multiplier factor (S)

S[1:0]

00

01

10

11

2 × voltage multiplier

3 × voltage multiplier

4 × voltage multiplier

5 × voltage multiplier

1999 Aug 10

17

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