hd66712u Renesas Electronics Corporation., hd66712u Datasheet - Page 6
hd66712u
Manufacturer Part Number
hd66712u
Description
Dot-matrix Liquid Crystal Display Controller/driver - Hitachi Semiconductor
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66712U.pdf
(88 pages)
- Current page: 6 of 88
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HD66712 Block Diagram
RS/CS*
R/SCLK
RW/SID
V5OUT2
V5OUT3
DB4–DB7
DB3–DB0
DB0–SOD
V
GND
Vci
CC
C1
C2
RESET*
System
interface
• Serial
• 4 bits
• 8 bits
output
Input/
buffer
Reset circuit
Booster
ACL
8
8
Busy
flag
V1
register
Instruction register
Data
(DR)
7
7
V2
(I R)
(SGRAM)
Segment
16 bytes
RAM
8
V3
Address counter
3
generator RAM
Instruction
Character
(CGRAM)
V4
64 bytes
decoder
7
OSC1
8
V5
8
7
and smooth scroll circuit
CPG
5/6
generator ROM
Parallel/serial
OSC2
Display data RAM
9,600 bytes
Character
(CGROM)
converter
(DDRAM)
80
5
8 bits
8
8
Timing generator
7
Cursor and
controller
EXT
bling
register
60-bit
shift
60-bit
latch
circuit
register
34-bit
shift
Common
Segment
LCD drive
signal
signal
driver
driver
selector
voltage
SEG1–
SEG60
COM0–
COM33
CL1
CL2
M
D
HD66712U
369
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