PCF8531USLASH2 datasheet(17/44 Pages) PHILIPS

17 / 44 page

2000 Feb 11

Philips Semiconductors

Product speciﬁcation

× 128 pixel matrix driver

PCF8531

Table 6

Explanations for symbols in Table 5

Note

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

BIT

chip is active

chip is in Power-down mode

horizontal addressing

vertical addressing

normal mode; full display + icons

icon mode; only icons are displayed

H[1:0](1)

see Table 7

D and E

see Table 7

HVE

voltage multiplier disabled

voltage multiplier enabled

PRS

VLCD programming range LOW

VLCD programming range HIGH

TC[2:0]

see Table 7

S[1:0]

see Table 7

Table 7

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

Table 8

Multiplex rates

BITS

VALUE

DESCRIPTION

Command page (H)

H[1:0]

function and RAM command page

display setting command page

HV-gen command page

Display modes (D, E)

D and E 00

display blank

normal mode

all display segments

inverse video mode

Temperature coefﬁcient (TC)

TC[2:0]

000

temperature coefﬁcient 0

001

temperature coefﬁcient 1

010

temperature coefﬁcient 2

011

temperature coefﬁcient 3

100

temperature coefﬁcient 4

101

temperature coefﬁcient 5

110

temperature coefﬁcient 6

111

temperature coefﬁcient 7

Voltage multiplier factor (S)

S[1:0]

× voltage multiplier

MUX RATE

1:17

1:26

1:34

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