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)
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.
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
The driver can operate handy units at the minimum
power consumption by using its merit of lower power
consumption, standby mode, and sleep mode.
80 µA max
(at ordinary operation (during
display): Including the internal
power supply operating current)
FEATURES
500 µA max (at ordinary operation (during
access): fcyc = 200 KHz,
including the internal power
supply operating current)
• 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>
20 µA max
(in standby mode: Oscillation
ON, power OFF, static icon
display)
1(16 digits) × 4 lines + 160 symbols + 10 static irons
(SED1240)
5 µA max
(in sleep mode: oscillation OFF,
power OFF, display OFF)
2(16 digits) × 3 lines + 160 symbols + 10 static icons
(SED1241)
3(16 digits) × 2 lines + 160 symbols + 10 static icons
(SED1242)
• Power supply:
VDD - VSS
1.8 V to 5.5 V
1.8 V to 5.5 V
5.5 V to 16.0 V
VDD - VSS2
VDD - V5
<Standby mode>
• Wide operating temperature range
110 static icons (SED1240)
Ta = –30 to +85°C
210 static icons (SED1241)
• CMOS process
310 static icons (SED1242)
• Pad pitch 90 µm Min
• Vertical double-size display function
• Line vertical scroll function
• Line blink function
• Delivery form
Chip (gold bump product)
TCP
• This IC is not designed against radiation and strong
light and noise.
SED124 D**
*
SED124 T**
*
• Symbol blink function
EPSON
8–1