PCF88331 datasheet(61/112 Pages) PHILIPS

61 / 112 page

2003 Feb 14

Philips Semiconductors

Objective speciﬁcation

STN RGB - 132

× 132 × 3 driver

PCF8833

Table 80 Enable/disable factory defaults reset state

FUNCTIONAL DESCRIPTION

7.1

MPU interfaces

The PCF8833 can interface to a microcontroller with an 8-bit parallel or a serial interface to transmit both data and

commands to the PCF8833.

7.1.1

HARDWIRED INTERFACE SELECTION

The selection of a given interface is done by setting pins PS0, PS1 and PS2 as shown in Table 81. Inputs PS1 and PS2

must be connected to VDD1 or VSS1.

Table 81 Interface selection; note 1

Note

1. X = don’t care.

7.1.2

GENERAL PROTOCOL

The generally supported protocol for programming the LCD driver is shown in Fig.33.

BIT

LOGIC 0

LOGIC 1 (RESET STATE)

SFD

registers must be set via the interface

OTP programmed data is used

PS2

PS1

PS0

INTERFACE

READBACK SELECT

serial (3-line)

via the read instruction

8080 MPU basic

RD write strobe

handbook, full pagewidth

MGU942

Fig.33 Programming protocol.

S = start data transmission; P = stop data transmission; TB = transmission byte.

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