HD66712 Datasheet, PDF (6/88 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver

HD66712U
HD66712 Block Diagram
EXT
OSC1 OSC2
RESET*
Reset circuit
ACL
CPG
CL1
Timing generator
CL2
M
7
Instruction register
Instruction
(I R)
decoder
RS/CS*
R/SCLK
RW/SID
DB4–DB7
DB3–DB0
DB0–SOD
Vci
System
interface
• Serial
• 4 bits
• 8 bits
Input/
output
buffer
8
7
Address counter
7
Display data RAM
(DDRAM)
80 × 8 bits
8
8
Data
register
(DR)
Busy
flag
8
3
8
8
7
60-bit
shift
register
8
Segment
RAM
(SGRAM)
16 bytes
Character
generator RAM
(CGRAM)
64 bytes
Character
generator ROM
(CGROM)
9,600 bytes
Cursor and
bling
controller
34-bit
shift
register
Common
signal
driver
COM0–
COM33
D
60-bit
latch
circuit
SEG1–
SEG60
Segment
signal
driver
LCD drive
voltage
selector
C1
C2
V5OUT2
V5OUT3
VCC
GND
Booster
5
5/6
Parallel/serial
converter
and smooth scroll circuit
V1 V2
V3
V4
V5
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