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HCD66727A04 Datasheet(PDF) 6 Page - Hitachi Semiconductor

Part # HCD66727A04
Description  Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
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Manufacturer  HITACHI [Hitachi Semiconductor]
Direct Link  http://www.renesas.com/eng
Logo HITACHI - Hitachi Semiconductor

HCD66727A04 Datasheet(HTML) 6 Page - Hitachi Semiconductor

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HD66727
6
HD66727 Block Diagram
Serial
interface
• I2C bus
• Clock
synchro-
nized
serial
Data
register
(DR)
Busy
flag
(BF)
Instruction register
(I R)
Address
counter
(AC)
Timing generator
Display data
RAM
(DDRAM)
60 x 8 bits
Character
generator
RAM
(CGRAM)
32 bytes
Character
generator
ROM
(CGROM)
11,520 bits
Parallel/serial converter
60-bit
latch
circuit
60-bit
segment
shift
register
Segment
driver
LCD drive
voltage
selector
Cursor and
blink
controller
CPG
Instruction
decoder
ID1/CS*
SDA
SCL
VCC
GND
COM1/32–
COM32/1
SEG1/60–
SEG60/1
OSC1 OSC2
8
8
6
6
8
7
7
8
8
6
6
Vci
Double/triple
booser
C1
6
3
Segmemt
RAM
(SGRAM)
8 bytes
IM
RESET*
C2
+–
V2
+–
V3
+–
+–
V5OUT2
V5OUT3
Annunciator
driver
ASEG1–
ASEG12
ACOM
+–
VEE
COMS1/2
EXM
RR
2R
R
R
VR
TEST
V1OUT
V2OUT
V3OUT
V4OUT
V5OUT
OPOFF
VREF
VREFP
VREFM
AGND
ID0
Key scan
timing
controller
Key scan
registers
(SCAN0–SCAN7)
KIN0–
KIN3
KST0–
KST7
4
Common
driver
34-bit bidirectional
common shift register
LED
output
port
LED0–
LED2
PORT0–
PORT2


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