HD66766R Datasheet, PDF (10/97 Pages) Hitachi Semiconductor – 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

HD66766R
Rev. 1.0-1 / September 2002
Pin Functions
Table 4 Pin Functional Description
Signals
IM2-1,
IM0/ID
Number of
Pins
I/O
3
I
CS*
1
I
RS
1
I
E/WR*/SCL 1
I
RW/RD* 1
I
DB0/SDI
1
I/O
DB1/SDO 1
I/O
Connected to
GND or V_CC
MPU
MPU
MPU
MPU
MPU
MPU
Functions
Selects the MPU interface mode:
IM2 IM1 IM0/ID0 MPU Interface mode
GND GND GND 68 system 16-bit bus interface
GND GND Vcc
68 system 8-bit bus interface
GND Vcc GND 80 system 16-bit bus interface
GND Vcc 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.
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.
Selects the register.
Low: Index/status
High: Control
For a register or a synchronous clock interface, fixed to
the Vcc or GND level.
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.
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.
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.
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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