PCF8531USLASH2 datasheet(23/44 Pages) PHILIPS

23 / 44 page

2000 Feb 11

Philips Semiconductors

Product speciﬁcation

× 128 pixel matrix driver

PCF8531

Notes

1. As the programming range for the internally generated VLCD allows values above the maximum allowed VLCD, the

user has to ensure, while setting the VOP register and selecting the temperature compensation, that the VLCD limit of

maximum 9 V will never be exceeded under all conditions and including all tolerances.

2. LCD outputs are open circuit, inputs at VDD or VSS; bus inactive.

3. VDD1 to VDD3 = 2.85 V; VLCD = 7.0 V; voltage multiplier = 3 × VDD; fOSC = 34 kHz.

4. VDD1 to VDD3 = 2.75 V; VLCD = 9.0 V; fOSC = 34 kHz.

5. VDD1 to VDD3 = 2.75 V; VLCD = 3.5 V; fOSC = 34 kHz.

6. Resets all logic when VDD1 <VPOR.

ILOAD≤ 50 µA; outputs tested one at a time.

8. VLCD ≤ 7.7 V.

VLCD generation

VLCD(tol)

LCD voltage tolerance, internal

VLCD

TC1 to TC7; note 8

−−±3.9

TC0

LCD voltage temperature

coefﬁcient 0

Tamb = −20 to +70 °C

−

°C

TC1

LCD voltage temperature

coefﬁcient 1

Tamb = −20 to +70 °C

−−0.026 −

°C

TC2

LCD voltage temperature

coefﬁcient 2

Tamb = −20 to +70 °C

−−0.039 −

°C

TC3

LCD voltage temperature

coefﬁcient 3

Tamb = −20 to +70 °C

−−0.052 −

°C

TC4

LCD voltage temperature

coefﬁcient 4

Tamb = −20 to +70 °C

−−0.078 −

°C

TC5

LCD voltage temperature

coefﬁcient 5

Tamb = −20 to +70 °C

−−0.13

−

°C

TC6

LCD voltage temperature

coefﬁcient 6

Tamb = −20 to +70 °C

−−0.19

−

°C

TC7

LCD voltage temperature

coefﬁcient 7

Tamb = −20 to +70 °C

−−0.26

−

°C

Tcut

cut point temperature

−

−°C

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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