PF834-03
SED1220 Series
SED1220 Series
Dot Matrix LCD Controller Driver
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12 chara x 3 line (5 x 8 dot)
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Built-in Character Generator ROM and RAM
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Built-in Power Supply Circuit for LCD
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OVERVIEW
SED1220 is a dot matrix LCD controller/driver for character display. Using 4bits data, 8bits data or serial data being
provided from the micro computer, it displays up to 24 characters, 4 user defined characters and up to 120 symbols.
Up to 256 types of built-in character generator ROMs are prepared. Each character font is consisted of 5
×
8 dots.
It also contains the RAM for displaying 4 user defined characters each font consisting of 5
×
8 dots. It is symbol
register allows character display with high degree of freedom. This handy equipment can be operated with
minimum power consumption with its low power consumption design, standby and sleeping mode.
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FEATURES
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Built-in data display RAM – 36 characters + 4 user defined characters + 120 symbols.
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CG ROM (For up to 256 characters), CG RAM (for 4 characters) and symbol register (for 120 symbols).
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No. of display digit and lines
< In normal mode >
(1) (12 digits + 4 segments for signal)
×
3 lines + 120 symbols + 5 static symbols (SED1220D
VV
)
(2) (12 digits + 4 segments for signal)
×
2 lines + 120 symbols + 5 static symbols (SED1221D
VV
)
(3) 12 digits
×
2 lines + 120 symbols + 5 static symbols (SED1222D
VA
)
(4) 12 digits
×
2 lines + 120 symbols + 10 static symbols (SED122AD
VB
)
< In standby mode >
(1) 5 static symbols
(2) 5 static symbols
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Built-in CR oscillation circuit (C and R contained)
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Accepts external clock input
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High-speed MPU interface
Affords interface with both 68/80 system MPUs
Affords interface through 4 bits and 8 bits
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Affords serial interface
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Character font consists of 5
×
8 dots
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Duty ratio
(1) 1/26
(2) 1/18
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Simplified command setting
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Built-in power circuit for driving liquid crystal
Power amplifier circuit, power regulation circuit and voltage followers
×
4
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Built-in electronic volume function
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Low power consumption
80
µA
max.
(In normal operation, including operating current of the power supply).
TBD
µA
max. (In standby mode for displaying static icon).
TBD
µA
max. (In sleeping mode when display is turned off).
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Power supply
V
DD
- V
SS
–2.4 V to –3.6 V
V
DD
- V
5
–4.0 V to –6.0 V
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Temperature range for wide range operation
Ta = –30 to 85°C
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CMOS process
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Shipping style
Chip (Al pad product)
SED1222D
VA
Chip (Au bump product)
SED122VD
VB
TCP
SED122VT
VV
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This unit does not employ radiation protection design
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SED1220 Series
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ABSOLUTE MAXIMUM RATINGS
Item
Power supply voltage (1)
Power supply voltage (2)
Power supply voltage (3)
Input voltage
Output voltage
Operating temperature
Storage temperature
TCP
Bare chip
Symbol
V
SS
V
5
, V
out
V
1
, V
2
, V
3
, V
4
V
IN
V
O
T
opr
T
str
Standard value
–6.0 to +0.3
–6.0 to +0.3
V
5
to +0.3
V
SS
–0.3 to +0.3
V
SS
–0.3 to +0.3
–30 to +85
–55 to +100
–65 to +125
Unit
V
V
V
V
V
°C
°C
(V
CC
) V
DD
(GND) V
SS
V
DD
V
5
Notes: 1. All the voltage values are based on V
DD
= 0 V.
2. For voltages of V
1
, V
2
, V
3
and V
4
, keep the condition of V
DD
≥
V
1
≥
V
2
≥
V
3
≥
V
4
≥
V
5
and V
DD
≥
V
SS
≥
V
5
≥
V
OUT
at all times.
3. If the LSI is used exceeding the absolute maximum ratings, it may lead to permanent destruction.
In ordinary operation, it is desirable to use the LSI in the condition of electrical characteristics. If the LSI
is used out of this condition, it may cause a malfunction of the LSI and have a bad effect on the reliability
of the LSI.
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