—PRELIMINARY—
HD66765
396-channel Segment Driver with Internal RAM for 4096-color
Displays
Description
The HD66765, 396-channel segment driver LSI, displays 132RGB-by-176-dot graphics on STN
displays in 4096 colors. It is for driving STN color LCD displays to a maximum of 132RGB by 176
dots, in combination with the HD66764 common driver. The HD66765’s bit-operation functions, 16-
bit high-speed bus interface, and high-speed RAM-write functions enable efficient data transfer and
high-speed rewriting of data to the graphics RAM.
The HD66765 and HD66764 have various functions for reducing the power consumption of an LCD
system. The HD66765 has a low-voltage operation (1.8 V min.) and an internal RAM to display a
maximum of 132RGB-by-176-dot color, and the HD66764 has a step-up circuit to generate the LCD-
drive voltage, a bleeder resistor for the drive interface with the LCD, and voltage-followers. Since the
HD66765 incorporates a circuit that interfaces with the HD66764, it can set instructions for the
HD66764. In addition, precise power control can be achieved by combining these hardware functions
with software functions, such as a partial display that only requires a low drive-voltage duty, and
standby and sleep modes. This LSI is suitable for any medium-sized or small portable battery-driven
product requiring long-term driving capabilities, such as digital cellular phones supporting a WWW
browser, bidirectional pagers, and small PDAs.
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Target Specification
Rev.0.1
January, 2001
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Features
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132RGB x 176-dot graphics display LCD controller/driver for 4,096 STN colors (when HD66764
is used)
Low-voltage drive and flickerless PWM grayscale drive
16-/8-bit high-speed bus interface and serial peripheral interface (SPI)
High-speed burst-RAM write function
Writing to a window-RAM address area by using a window-address function
Bit-operation functions for graphics processing:
Write-data mask function in bit units
Logical operation in pixel unit and conditional write function
HD66765
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Various color-display control functions:
4,096 out of 13,824 possible colors can be displayed at the same time (grayscale palette
included)
Vertical scroll display function in raster-row units
Low-power operation supports:
Vcc = 1.8 to 3.6 V (low-voltage range)
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VLCD = 2.0 to 4.0 V (liquid crystal drive voltage)
Power-save functions such as the standby mode and sleep mode
Partial LCD drive of two screens in any position
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Programmable drive duty ratios (1/16–1/176) and bias values (1/4–1/13) displayed on LCD
Maximum 12-times step-up circuit for liquid crystal drive voltage (HD66764)
Voltage followers to decrease direct current flow in the LCD drive bleeder-resistors
(HD66764)
128-step contrast adjuster (HD66764)
Built-in circuit for interfacing with the HD66764 common driver
Maximum 132RGB-by-176-dot display in combination with the HD66764 common driver
Internal RAM capacity: 34,848 bytes
396-segment liquid crystal display driver
n-raster-row AC liquid-crystal drive (C-pattern waveform drive)
Internal oscillation and hardware reset
Shift change of segment driver
Type Number
Type Number
HD66765TB0
HCD66765BP
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External Appearance
Bending TCP
Au-bump chip
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HD66765
HD66765 PAD Arrangement
SEG12
SEG11
SEG76
SEG75
No.1 No.500
No.435 No.434
DUMMY42
SEG77
SEG78
DUMMY1
SEG10
SEG9
No.2
No.433
- Chip size : 13.22mm x 3.85mm
- Chip thickness : 550um (typ.)
- PAD coordinate : PAD center
- Coordinate origine : Chip center
- Au bump size :
(1) 80um x 80 um
DUMMY1, DUMMY2-DUMMY39,
DUMMY40, DUMMY41, DUMMY42
(2) 35um x 80um
SEG304-SEG93
(3) 80um x 35um
SEG386-SEG321,
SEG76-SEG11
(4) 45um x 80um
SEG10-SEG1, SEG396-SEG387,
SEG320-SEG305, SEG92-SEG77
- Au bump pitch : Refer PAD coordinate
- Au bump height : 15um (typ.)
SEG2
SEG1
DUMMY2
DUMMY3
SEG91
SEG92
SEG93
SEG94
DUMMY16
DUMMY17
RESET
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
GNDDUM1
DB7
DB6
DB5
DB4
DB3
DB1/SDO
RW/RD*
DB2
DB0/SDI
E/WR*/SCL
CS*
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RS
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
VSH
VSH
VSH
VSH
VSH
VSH
OSC2
OSC1
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X
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HD66765
(Top View)
GNDDUM2
IM2
IM1
IM0/ID
VccDUM1
TEST
DCCLK
CL1
FLM
M
DISPTMG
CCS
CCL
CDA
RESET
TYPE CODE
HD66765
SEG303
SEG304
SEG305
SEG306
No.121
No.190
SEG319
SEG320
DUMMY41
SEG385
SEG386
SEG321
SEG322
DUMMY18
DUMMY19
DUMMY38
DUMMY39
SEG396
SEG395
SEG388
SEG387
DUMMY40
No.122
No.123
No.188 No.189
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