PCF8811 Ver la hoja de datos (PDF) - Philips Electronics

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componentes Descripción

Fabricante

PCF8811

80×128 pixels matrix LCD driver

Philips Electronics 

Philips Semiconductors

80 × 128 pixels matrix LCD driver

Product specification

PCF8811

SYMBOL

VOS1

VOS0

VLCDOUT

VLCDSENSE

VLCDIN

ROW 79 to

ROW 40

ROW 80

COL 0 to

COL 127

ROW 0 to

ROW 39

PAD

89

90

91 to 99

100

101 to 107

115 to 154

DESCRIPTION

VLCD offset pad 1

VLCD offset pad 0

voltage multiplier output

voltage multiplier regulation input

LCD supply voltage

LCD row driver outputs; ROW 79 is the icon row when the icon row is enabled

155

duplicate of ROW 79

156 to 283 LCD column driver outputs

284 to 323 LCD row driver outputs

1, 3 to 8,

109 to 114,

324 to 333

2 and 108

dummy pads

alignment marks

7 PIN FUNCTIONS

7.1 ROW 0 to ROW 79: row driver outputs

These pads output the display row signals.

7.2 COL 0 to COL 127: column driver outputs

These pads output the display column signals.

7.3 VSS1 and VSS2: negative power supply rails

The 2 supply rails must be connected together.

7.4 VDD1 to VDD3: positive power supply rails

VDD2 and VDD3 are the supply voltage for the internal

voltage generator. Both have the same voltage and may

be connected together outside of the chip. VDD1 is used as

supply for the rest of the chip. VDD1 can be connected

together with VDD2, VDD3 but in this case care must be

taken to respect the supply voltage range; see Chapter 16.

If the internal voltage generator is not used then pins VDD2

and VDD3 must be connected to VDD1.

7.5 VOTPPROG: OTP programming power supply

Supply voltage for the OTP programming; see Chapter 22.

VOTPROG can be combined with the SCLH/SCE pin in order

to reduce the external connections.

7.6 VLCDOUT, VLCDIN and VLCDSENSE: LCD power

supply

Positive power supply for the liquid crystal display. If the

internal VLCD generator is used, then all three inputs must

be connected together. If not (VLCD generator is disabled

and an external voltage is supplied to VLCDIN), then

VLCDOUT must be left open-circuit, VLCDSENSE must be

connected to VLCDIN, VDD2 and VDD3 should be applied

according to the specified voltage range. An external LCD

supply voltage can be supplied using the VLCDIN pad. In

this case, VLCDOUT should not be connected to VLCDIN, and

the internal voltage generator must be switched off. If the

PCF8811 is in power-save mode, the external LCD supply

voltage can be switched off.

7.7 T1 to T5: test pads

T1, T2 and T5 must be connected to VSS, T3 and T4 must

be left open-circuit. Not accessible to user.

7.8 MF2 to MF0

Manufacturer device ID pads. (manufacturer ID

100 = Philips).

7.9 DS0

Device recognition pad; see Table 10.

2004 May 17

6

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