PCF2105MUSLASH2 datasheet(28/48 Pages) PHILIPS

28 / 48 page

1998 Jul 30

Philips Semiconductors

Product speciﬁcation

LCD controller/driver

PCF2105

Notes

1. LCD outputs are open-circuit; inputs at VDD or VSS; bus inactive; internal or external clock with duty factor 50%.

2. Resets all logic when VDD <VPOR.

3. When the voltages are above VDD or below VSS, an input current may flow; this current must not exceed ±0.5 mA.

4. Tested on sample basis.

5. Resistance of output terminals (R32 to R1 and C60 to C1) with load current IL = 150 µA; VOP =VDD − VLCD =9V;

outputs measured one at a time.

6. LCD outputs open-circuit.

15 AC CHARACTERISTICS

VDD = 2.5 to 6.0 V; VSS =0V; VLCD =VDD − 3.5 V to VDD − 9 V; Tamb = −40 to +85 °C; unless otherwise speciﬁed.

LCD outputs

Ro(ROW)

row output resistance on

pads R32 to R1

note 5

−

1.5

Ω

Ro(COL)

column output resistance on

pads C60 to C1

note 5

−

Ω

Vbias(tol)

bias voltage tolerance on

pads R32 to R1 and C60 to C1

note 6

−±20

±130

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

ffr(LCD)

LCD frame frequency (internal clock)

note 1

100

fosc

oscillator frequency (external clock)

150

225

kHz

Bus timing characteristics: Parallel Interface; notes 1 and 2

WRITE OPERATION (WRITING DATA FROM MICROCONTROLLER TO PCF2105); see Fig.23

Tcy(en)

enable cycle time

500

−−

tW(en)

enable pulse width

220

−−

tsu(A)

address set-up time

−−

th(A)

address hold time

−−

tsu(D)

data set-up time

−−

th(D)

data hold time

−−

READ OPERATION (READING DATA FROM PCF2105 TO MICROCONTROLLER); see Fig.24

Tcy(en)

enable cycle time

500

−−

tW(en)

enable pulse width

220

−−

tsu(A)

address set-up time

−−

th(A)

address hold time

−−

td(D)

data delay time

−−

150

th(D)

data hold time

−

100

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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