HD667A66R datasheet(10/97 Pages) HITACHI

Part #	HD667A66R

Description	132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

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Manufacturer	HITACHI [Hitachi Semiconductor]

Direct Link	http://www.renesas.com/eng

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10 / 97 page

HD66766R

Rev. 1.0-1 / September 2002

10

Pin Functions

Table 4

Pin Functional Description

Signals

Number of

Pins

I/O

Connected to

Functions

IM2-1,

IM0/ID

3

I

GND or V

CC

Selects the MPU interface mode:

IM2

IM1

IM0/ID0

MPU Interface mode

GND

68 system 16-bit bus interface

GND

Vcc

68 system

8-bit bus interface

GND

Vcc

GND

80 system 16-bit bus interface

GND

Vcc

80 system

8-bit bus interface

Vcc

GND

ID

Clock synchronized serial interface

When a serial interface is selected, the IM0 pin is used as

the ID setting for a device code.

CS*

1

I

MPU

Selects the HD66766R:

Low: HD66766R is selected and can be accessed

High: HD66766R is not selected and cannot be accessed

Must be fixed at GND level when not in use.

RS

1

I

MPU

Selects the register.

Low: Index/status

High: Control

For a register or a synchronous clock interface, fixed to

the Vcc or GND level.

E/WR*/SCL

1

I

MPU

For a 68-system bus interface, serves as an enable signal

to activate data read/write operation.

For an 80-system bus interface, serves as a write strobe

signal and writes data at the low level.

For a synchronous clock interface, serves as the

synchronous clock signal.

RW/RD*

1

I

MPU

For a 68-system bus interface, serves as a signal to select

data read/write operation.

Low: Write

High: Read

For an 80-system bus interface, serves as a read strobe

signal and reads data at the low level.

For a synchronous clock interface, fixed to the Vcc or

GND level.

DB0/SDI

1

I/O

MPU

Serves as a 16-bit bi-directional data bus.

For an 8-bit bus interface, data transfer uses DB15-DB8;

fix unused DB7-DB0 to the Vcc or GND level.

For a clock-synchronous serial interface, serves as the

serial data input pin (SDI). The input level is read on the

rising edge of the SCL signal.

DB1/SDO

1

I/O

MPU

Serves as a 16-bit bi-directional data bus.

For an 8-bit bus interface, data transfer uses DB15-DB8; fix

unused DB7-DB0 to the Vcc or GND level.

For a clock-synchronous serial interface, serves as a serial

data output pin (SDO). Successive bit values are output on

the falling edge of the SCL signal.

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