hd66740 Renesas Electronics Corporation., hd66740 Datasheet - Page 9
hd66740
Manufacturer Part Number
hd66740
Description
112 X 80-dot Graphics Lcd Controller/driver - Hitachi Semiconductor
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66740.pdf
(95 pages)
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Pin Functions
Table 2
Signals
IM2, IM1
IM0/ID
CS*
RS
E/WR*/SCL
RW/RD*/
SDA
Pin Functional Description
Number of
Pins
2
1
1
1
1
1
I/O
I
I
I
I
I
I or
I/O
Connected to
GND or V
GND or V
MPU
MPU
MPU
MPU
CC
CC
Functions
Selects the MPU interface mode:
Selects the transfer bus length for a parallel bus
interface.
GND: 8-bit bus, Vcc: 4-bit bus
Inputs the ID of the device ID code for a serial bus and
I2C bus interface.
Selects the HD66740:
Low: HD66740 is selected and can be accessed
High: HD66740 is not selected and cannot be
accessed
Must be fixed at GND level when not in use.
Selects the register for a parallel bus interface.
Low: Instruction High: RAM access
Must be fixed at GND level when not in use.
For an 80-system parallel bus interface, serves as a
write strobe signal and writes data at the low level.
For a 68-system parallel bus interface, serves as an
enable signal to activate data read/write operation.
Inputs the serial transfer clock for a serial interface.
Fetches data at the rising edge of a clock.
For an 80-system parallel bus interface, serves as a
write strobe signal and reads data at the low level.
For a 68-system parallel bus interface, serves as a
signal to select data read/write operation.
Low: Write
Serves as the bidirectional serial transfer data for a
serial interface.
IM2
"GND"
"GND"
"Vcc"
"Vcc"
9
IM1
"GND"
"Vcc"
"GND"
"Vcc"
MPU interface mode
Clock synchronized serial interface
68-system parallel interface
I2C bus interface
80-system parallel interface
Sends/Receives data.
High: Read
HD66740
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