HD66730 Datasheet, PDF (3/131 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display

HD66730/HD66731
Block Diagram (HD66730)
OSC1 OSC2
RESET*
Oscillation
circuit (CPG)
CL1
Timing generator
CL2
M
Index
register
Control
register
7
(I DR)
(R0 to R7)
COM25/
COMD
IM
RS/CS*
E/SCLK
RW/SID
DB1 to DB7
DB0/SOD
4
System
interface
• Serial
• 8 bit
RAM
data
8 _register
(RDR: R9)
Busy
I/O buffer _{flag (BF) 8}
8
RAM address
counter
(RAR: R8)
Display data RAM
(DDRAM)
80 × 8 bits
7
8
8
8
8
25-bit
shift
register
Common
driver
COM1 to
COM24
COMS
SEGD
SEG1 to
SEG71
71-bit
shift
register
71-bit
latch
circuit
Segment
driver
Address generator
4
8
3
12
7
Character Character
Vci
C1
Booster
Segment
RAM
(SEGRAM)
16 bytes
Character
generator
RAM
(CGRAM)
208 bytes
generator
generator
ROM for
ROM for
full-size
half-size
character font character font
(FCGROM) (HCGROM)
506,880 bits 9,216 bits
C2
(704 b × 720 w) (768 b × 12 w)
LCD drive
voltage
selector
V5OUT2
12
12
11
V5OUT3
Display attribute control circuit
12
12
Cursol
control
circuit
Parallel/serial
converter and scroll
control circuit
V_CC
GND
V1 V2 V3 V4 V5
3