PCF8811USLASH2DASLASH1 datasheet(15/81 Pages) NXP

15 / 81 page

PCF8811_4

Product data sheet

Rev. 04 — 27 June 2008

15 of 81

NXP Semiconductors

PCF8811

80 x 128 pixels matrix LCD driver

Functional description

7.1 Pad functions

7.1.1 R0 to R79: row driver outputs

These pads output the display row signals.

7.1.2 C0 to C127: column driver signals

These pads output the display column signals.

7.1.3 VSS1 and VSS2: negative power supply rails

• VSS2 for voltage multiplier

• These 2 supply rails must be connected together

7.1.4 VDD1 to VDD3: positive power supply rails

• VDD2 and VDD3 are the supply voltages for the internal voltage multiplier

• VDD2 and VDD3 have the same voltage and may be connected together outside of the

chip; see Section 17

• VDD1 is used as supply for the rest of the chip

• VDD1 can be connected together with VDD2 and VDD3

• If the internal voltage multiplier is not used then pads VDD2 and VDD3 must be

connected to VDD1; see Section 17

• In the case that VDD1,VDD2 and VDD3 are connected together, care must be taken with

respect to the supply voltage range; see Section 14

7.1.5 VOTPPROG: OTP power supply

Supply voltage for the OTP programming; see Section 18. VOTPPROG can be combined

with the SCLH/SCE pad in order to reduce the external connections.

7.1.6 VLCDOUT, VLCDIN, and VLCDSENSE: LCD power supply

Positive power supply for the liquid crystal display.

• If the internal VLCD multiplier is used, then all three inputs must be connected together

• If VLCD multiplier is disabled and an external voltage is supplied to VLCDIN, then

VLCDOUT must be left open-circuit and VLCDSENSE must be connected to VLCDIN

• VDD2 and VDD3 should be applied according to the speciﬁed voltage range

330

5949.48

−1032.50

dummy

331

6001.32

−1032.50

dummy

332

6053.16

−1032.50

dummy

333

6105.00

−1032.50

dummy

Table 5.

Bonding pad description …continued

All x/y coordinates represent the position of the center of each pad with respect to the center (x/y = 0) of the chip; see

Figure 2.

Symbol

Pad

X (

µm)

Y (

µm)

Description

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