ks0070b Samsung Semiconductor, Inc., ks0070b Datasheet - Page 14

• Manufacturer Part Number: ks0070b
• Description: 16com / 80seg Driver & Controller For Dot Matrix Lcd
• Manufacturer: Samsung Semiconductor, Inc.

KS0070B
16COM / 80SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
CGROM (Character Generator ROM)
CGROM has a 5
7-dot 192 character pattern, and a 5
10-dot 32 character pattern (Refer to Table 2).
CGRAM (Character Generator RAM)
CGRAM has up to 5
8-dot 8 characters. By writing font data to CGRAM, user defined characters can be used
(Refer to Table 3).
Timing Generation Circuit
Timing generation circuit generates clock signals for the internal operations.
LCD Driver Circuit
LCD Driver circuit has 16 common and 80 segment signals for LCD driving.
Data from CGRAM/CGROM is transferred to an 80-bit segment latch serially, and then stored to an 80-bit shift
latch. When each com is selected by a 16-bit common register, segment data is also output through the segment
driver from an 80-bit segment latch.
In the case of a 1-line display mode, COM1 ~ COM8 have 1/8 duty or COM1 ~ COM11 have a 1/11 duty. In a
2-line display mode, COM1 ~ COM16 have a 1/16 duty ratio.
Cursor/Blink Control Circuit
It controls cursor/blink ON/OFF at cursor position.