SED1240 Series
OVERVIEW
The SED1240 Series is a character display dot matrix
LCD controller driver. This driver can display up to 64
characters and 6 user-defined characters, and up to 160
symbols according to the 4-bit, 8-bit or serial data which
is sent from a microcomputer.
The built-in character generator ROM is provided with
up to 544 types of character fonts having a structure of 5
×
8 dots. Up to 256 types can be continuously called by
register option selection. This can cope with many
different character fonts by uses and countries and permits
a wider range of use. This driver incorporates a user-
defined character RAM for 6 characters of 5
×
8 dots and
can be used for the display of higher degree of freedom
by means of a symbol register.
The driver can operate handy units at the minimum
power consumption by using its merit of lower power
consumption, standby mode, and sleep mode.
FEATURES
• Built-in display data RAM 80-character + 6-character
user-defined characters + 160 symbols
• CGROM (for up to 544 characters), CGRAM (6
characters), symbol register (160 symbols)
• Display digits
×
Number of lines
<Ordinary mode>
1
(16 digits)
×
4 lines + 160 symbols + 10 static irons
(SED1240)
2
(16 digits)
×
3 lines + 160 symbols + 10 static icons
(SED1241)
3
(16 digits)
×
2 lines + 160 symbols + 10 static icons
(SED1242)
<Standby mode>
1
10 static icons (SED1240)
2
10 static icons (SED1241)
3
10 static icons (SED1242)
• Vertical double-size display function
• Line vertical scroll function
• Line blink function
• Symbol blink function
EPSON
8–1
SED1240
Series
• Built-in CR oscillating circuit (Built-in C, R)
• External clock input
• High-speed MPU interface
Interface with both MPUs of 68 series/80 series
Interface by 4 bits/8 bits
• Serial interface
• Character font 5
×
8 dots
• Duty ratio
1
1/34 (SED1240)
2
1/26 (SED1241)
3
1/18 (SED1242)
• Simple command setup
• Built-in liquid crystal drive power circuit
The boosting circuit, voltage regulating circuit, voltage
follower
×
4, and resistor for power regulating circuit
for bias select commands are incorporated.
• Built-in electronic volume function
• Lower power consumption
80
µA
max
(at ordinary operation (during
display): Including the internal
power supply operating current)
500
µA
max (at ordinary operation (during
access): fcyc = 200 KHz,
including the internal power
supply operating current)
20
µA
max
(in standby mode: Oscillation
ON, power OFF, static icon
display)
5
µA
max
(in sleep mode: oscillation OFF,
power OFF, display OFF)
• Power supply:
1.8 V to 5.5 V
V
DD
- V
SS
V
DD
- V
SS2
1.8 V to 5.5 V
5.5 V to 16.0 V
V
DD
- V
5
• Wide operating temperature range
Ta = –30 to +85°C
• CMOS process
• Pad pitch 90
µm
Min
• Delivery form
Chip (gold bump product)
SED124 D
**
TCP
SED124 T
**
• This IC is not designed against radiation and strong
light and noise.
*
*
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