HD66727 Datasheet, PDF (2/97 Pages) Hitachi Semiconductor – Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

HD66727
• 11,520-bit character generator ROM
 240 characters (6 × 8 dots)
• 32 × 6-bit character generator RAM
 4 characters (6 × 8 dots)
• 8 × 6-bit segment RAM
 40 segment-icons and marks max
• 60-segment × 34-common liquid crystal display driver
• Programmable display sizes and duty ratios (see Table 1)
• Vertical smooth scroll
• Vertical double-height display of all character fonts
• Horizontal double display with dedicated character fonts (6-dot font width used)
• Wide range of instruction functions:
 Clear display, display on/off control, icon and mark control, character blink, white-black inverting
blinking cursor, icon and mark blink, return home, cursor on/off, white-black inverting raster-row
• Internal oscillation with an external resistor
• Hardware reset
• Wide range of LCD drive voltages
 3.0V to 13.0V
• Slim chip with bumps for chip-on-glass (COG) mounting, slim chip without bumps for chip-on-board
(COB) mounting, and tape carrier package (TCP) (under development)
Table 1 Programmable Display Sizes and Duty Ratios
Display
Size
Duty
Ratio
Oscillation
Frequency
Current
Consumption
Multi-
Static-
plexed- Drive
Drive
Annu- Scanned
Segments nciators Keys
1 line × 12 1/10 40 kHz
characters
8 µA
40
12
32 (4 × 8)
2 lines × 12 1/18 80 kHz
characters
15 µA
40
12
32 (4 × 8)
3 lines × 12 1/26 120 kHz
characters
23 µA
40
12
32 (4 × 8)
4 lines × 12 1/34 160 kHz
characters
30 µA
40
12
32 (4 × 8)
Note: Current consumption excludes that for LCD power supply source; V_CC = 3V.
LED
Drive
3
3
3
3
General
Port
3
3
3
3
2