hd66765 Renesas Electronics Corporation., hd66765 Datasheet - Page 7

• Manufacturer Part Number: hd66765
• Description: 396-channel Segment Driver With Internal Ram For 4096-color Displays - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

Table 1
Signals
DB1/SDO
DB2-DB15 14
SEG1–SE
G396
CL1
M
FLM
DISPTMG
DCCLK
CCL
CDA
CCS*
VSH
V
CC
, GND
Number of
Pins
1
396
1
1
1
1
1
1
1
1
1
2
Pin Functional Description (cont)
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
I
—
Connected to
MCU
MPU
LCD
HD66764
HD66764
HD66764
HD66764
HD66764
HD66764
HD66764
HD66764
HD66764
Power supply
Functions
Serves as a 16-bit bidirectional 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.
Serves as a 16-bit bidirectional data bus.
For an 8-bit bus interface, data transfer uses DB15-
DB8; fix unused DB7-DB0 to the Vcc or GND level.
Output signals for segment drive. In the display-off
period (D1–0 = 00, 01) or standby mode (STB = 1), all
pins output GND level.
The SGS bit can change the shift direction of the
segment signal. For example, if SGS = 0, RAM
address 0000 is output from SEG1. If SGS = 1, it is
output from SEG396.
SEG1, SEG4, SEG7, ... display red (R), SEG2, SEG5,
SEG8, ... display green (G), and SEG3, SEG6,
SEG9, ... display blue (B) (SGS = 0).
The one-raster-row-cycle pulse is output.
The AC-cycle signal is output.
The frame-start pulse is output.
Outputs the display period signal.
Outputs clocks for the step-up.
Clock signal for a serial transfer of register setting
values to the common driver. Data is output on the
falling edge of this clock.
Data signal for serial transfer as register setting values
to the common driver.
Chip-select for the HD66764.
Low: the HD66764 is selected and can receive a serial
transfer.
High: the HD66764 is not selected and cannot receive
a serial transfer.
Input for the LCD-drive voltage for the segment driver,
which can be provided by the HD66764’s on-chip
power supply. VSH
V
CC
7
: + 1.8 V to + 3.6 V; GND (logic): 0
4.0 V
HD66765