SED1240 Series
1
SSC5000Series
PF925-01
SED1240 Series
Preliminary
s DESCRIPTION
The dot-matrix LCD controller driver SED1240 series is designed to display characters and capable of displaying
up to 64 characters, 6 user-defined characters and 160 symbols using 4- or 8-bit or serial data sent from the
microcomputer.
The built-in character generator ROM is equipped with up to 544 types of character fonts, which consist of 5
× 8
dots respectively, enabling the maximum consecutive calls of 256 types by switching register options. This enables
various character fonts to be applied to each purpose or country, etc., further widening the use of this IC. The user-
defined character RAM for 6 characters of 5
× 8 dots is also built in, enabling display of high degree of freedom
through the symbol register.
Thanks to its ultra-low power consumption, sleep and standby modes, it can operate handy equipment with the
minimum power demand.
s FEATURES
q Built-in display data RAM: 80 characters + 6 user-
defined characters + 160 symbols
q CGROM (up to 544 characters), CGRAM (6
characters) and symbol register (160 symbols)
q Number of displaying digits and lines
<Normal mode>
1) (16 digits)
× 4 lines + 160 symbols + 10 static
icons (SED1240)
2) (16 digits)
× 2 lines + 160 symbols + 10 static
icons (SED1241)
<Standby mode>
1) 10 static icons (SED1240)
2) 10 static icons (SED1241)
q Vertically-double size displaying function
q Line vertical scrolling function
q Line blinking function
q Symbol blinking function
q On-chip CR oscillation circuit (C and R on chip)
q External clock input available
q High-speed MPU interface
Compatible with both 68- and 80-series MPUs
4- and 8-bit interface available
q Serial interface available
q Character font: 5
× 8 dots
q Duty ratio: 1) 1/34 (SED1240)
2) 1/18 (SED1241)
q Simple command setting
q Built-in liquid crystal drive power circuit
Power boosting and voltage regulating circuits,
voltage followers (
× 4), bias switching command
available, built-in resistance for power regulating
circuit
q Built-in electronic volume function
q Low power demand:
80
A max. (during normal operation (display):
Including the internal power supply
operating current)
500
A max. (during normal operation (access):
fcyc = 200kHz, including the internal
power supply operating current)
20
A max. (in standby mode: Oscillation = On,
power = Off, static icon display)
5
A max. (in sleep mode: Oscillation = Off,
power = Off, display = Off)
q Power
VDD – VSS: –2.4 V to –3.6 V
VDD – V5:
–5.0 V to –11.0 V
q Wide operating temperature range: Ta = –30 to
85
°C
q CMOS process
q Pad pitch: 90
m (min.)
q Package to be shipped
Chip (gold bump model): SED124*D**
TCP:
SED124*T**
q This IC is not designed to resist radiation or
intense light noise.
LCD Controller Driver