HD66725 PDF даташит
Спецификация HD66725 изготовлена «Hitachi Semiconductor» и имеет функцию, называемую «(Graphics LCD Controller/Driver with Key Scan Function)». |
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Детали детали
Номер произв | HD66725 |
Описание | (Graphics LCD Controller/Driver with Key Scan Function) |
Производители | Hitachi Semiconductor |
логотип |
30 Pages
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HD66724/HD66725
(Graphics LCD Controller/Driver
with Key Scan Function)
ADE-207-309(Z)
Rev 1.2
'99.8
Description
The HD66724/HD66725, dot-matrix graphics LCD controller and driver LSI incorporating a key scan
function up to a 4-by-8 key matrix, display characters such as alphanumerics, katakana, hiragana and
symbols as well as graphics such as kanji and pictograms. They can be configured to drive a dot-matrix
liquid crystal display and control key scan functions under the control of the microprocessor connected via
the clock-synchronized serial or 4/8-bit bus. The HD66724 is capable of displaying up to three 12-
character lines, 72-by-24 dot graphics and 144 segments. The HD66725 is capable of displaying up to
three 16-character lines, 96-by-24 dot graphics and 192 segments. Of the 144 (192) segments displayed, 48
(64) segments can be grayscaled. The HD66724/HD66725 have a smooth horizontal/vertical scroll display
and double-height display so that the user can easily see a variety of information within a small LCM.
The HD66724/HD66725 have various functions to reduce the power consumption of an LCD system such
as low-voltage operation of 1.8 V or less, a booster to generate maximum triple LCD drive voltage from the
supplied voltage, and voltage-followers to decrease the direct current flow in the LCD drive bleeder-
resistors. Combining these hardware functions with software functions such as standby and sleep modes
allows fine power control. The HD66724/HD66725 are suitable for any portable battery-driven product
requiring long-term driving capabilities and small physical dimensions such as cellular phones, pagers,
portable audio devices, or electronic wallets.
Features
• Control and drive of a character and graphics LCD with built-in key scan functions
• Three 12- (16-) character lines, 72 (96) -by-24 dot graphics, and 144 (192) segments
• 48 (64) grayscale segments
• Control up to a 4 × 8 (32 key) matrix key scan.
• 3 general ports built-in
• Low-power operation support:
1
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HD66724/HD66725
Vcc = 1.8 to 5.5 V (low voltage)
VLCD = 3.0 to 6.5 V (liquid crystal drive voltage)
Single, double or triple booster for liquid crystal drive voltage
Contrast adjuster and voltage followers to decrease direct current flow in the LCD drive bleeder-
resistors
Wake-up feature using key scan interrupt
Programmable drive duty ratios and bias values displayed on LCD
• Clock-synchronized serial interface
• 4-/8-bit bus interface capability (except when key scan circuit is used)
• 80 × 8-bit display data RAM (80 characters max)
• 20,736-bit (6 × 8 dots : 432 characters) character generator ROM
• 384 × 8-bit (64 characters) character generator RAM
• 96 × 2-bit (192 segment-icons and marks max) segment RAM
• 72- (96-) segment × 26-common-signal liquid crystal display driver
• Programmable display sizes and duty ratios
• Vertical and horizontal smooth scrolls
• Vertical double-height display
• Selectable CGROM memory bank (max. 432 fonts)
• Wide range of instruction functions:
Clear display, display on/off control, icon and mark control, character blink, black-white reversed
blinking cursor, return home, cursor on/off, black-white reversed raster-row
• No wait time for instruction execution and RAM access (zero instruction)
• Internal oscillation (with external or built-in resistor) hardware reset
• Shift change of segment and common driver
• Slim chip with bumps for chip-on-glass (COG) mounting, and tape carrier package (TCP)
Table 1 Progammable Display Sizes and Duty Ratios
Character Display
Duty Optimum
Ratio Drive Bias HD66724
HD66725
1/2 1/2
Unavailable Unavailable
1/10 1/4
1 line x 12 1 line x 16
characters characters
1/18 1/5
2 lines x 12 2 lines x 16
characters characters
1/26 1/6
3 lines x 12 3 lines x 16
characters characters
Graphics Display
HD66724
HD66725
Segment Scanned General
Display Keys Ports
Unavailable Unavailable
32 (4 x 8) 3
72 x 8 dots 96 x 8 dots HD66724:
144
72 x 16 dots 96 x 16 dots HD66725:
192
72 x 24 dots 96 x 24 dots
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HD66724/HD66725
Total Current Consumption Characteristics (Vcc = 3 V, fosc = 32 kHz, TYP
Conditions, LCD Drive Power Current Included)
Total Power Consumption
Normal Display Operation
Character Duty Optimum Frame
Internal
Display Size Ratio Drive Bias Frequency Logic
LCD
Power
Total*
Segment only 1/2 1/2
80 Hz
(14 µA) (12 µA) (26 µA)
1-line display 1/10 1/4
80 Hz
(20 µA) (17 µA) (54 µA)
2-line display 1/18 1/5
74 Hz
(20 µA) (17 µA) (54 µA)
3-line display 1/26 1/6
77 Hz
(20 µA) (17 µA) (54 µA)
Note : When duty ratio = 1/2 and a double booster is not used:
the total power consumption = Internal logic current + LCD power current
When duty ratio = 1/10 and a double booster is used:
the total power consumption = Internal logic current + LCD power current x 2
Sleep Standby
Mode Mode
(11 µA) 0.1 µA
(11 µA)
(11 µA)
(11 µA)
Type Name
Types
HD66724RA03TA0L
HCD66724RA03BP
HD66725A03TA0L
HCD66725A03BP
External
Dimensions
TCP
Au-bumped chip
TCP
Au-bumped chip
Operation
Voltages
1.8 V to 5.5 V
Internal Fonts
Katakana, alphanumerics, symbols
and European fonts
3
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Номер в каталоге | Описание | Производители |
HD66724 | (Graphics LCD Controller/Driver with Key Scan Function) | Hitachi Semiconductor |
HD66724 | 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions | Hitachi Semiconductor |
HD66725 | (Graphics LCD Controller/Driver with Key Scan Function) | Hitachi Semiconductor |
HD66725 | 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions | Hitachi Semiconductor |
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