PCF8820U datasheet(22/60 Pages) PHILIPS

22 / 60 page

2000 Dec 07

Philips Semiconductors

Product speciﬁcation

× 101 Grey-scale/ECB colour dot matrix

LCD driver

PCF8820

screen mode

full display mode: multiplex rate is 1 : 67

partial screen mode: multiplex rate is 1 : 8; see Section 8.1.2.

BS2, BS1,

BS0

000

−

bias system selection bits; see Section 8.1.4

BS1/2

bias system selection

setting of bits BS2 to BS0

bias system 1/2; see Section 8.1.4

DP2, DP1,

DP0

display part

000

DDRAM bank 0 to 1: first 8 rows

111

DDRAM bank 14 to 15: last 8 rows

PRS

VLCDOUT programming range; see Fig.20

LOW range

HIGH range

HVE

high voltage generator

disabled

enabled

S2, S1, S0

voltage multiplier factor; see Section 8.1.5

000

× V

DD2

001

× VDD2

010

× VDD2

011

× VDD2

100

× VDD2

101

× VDD2

110

× VDD2

TC2, TC1,

TC0

temperature coefﬁcient; see Chapter 11

000

coefficient 0

001

coefficient 1

010

coefficient 2

011

coefficient 3

100

coefficient 4

101

coefficient 5

110

coefficient 6

111

coefficient 7

temperature measurement

no measurement

start measurement

VOP6 to VOP0

−

VLCD control register bits; see Section 8.1.7

BIT

RESET

STATE

VALUE

FUNCTION

PCF8820U Datasheet(PDF) 22 Page - NXP Semiconductors

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