Features: `Built-in display data RAM: 80 characters + 6 userdefined characters + 160 symbols
`CGROM (up to 544 characters), CGRAM (6 characters) and symbol register (160 symbols)
`Number of displaying digits and lines
<Normal mode>
1) (16 digits) * 4 lines + 160 symbols + 10 static icons (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)
`Vertically-double size displaying function
`Line vertical scrolling function
`Line blinking function
`Symbol blinking function
`On-chip CR oscillation circuit (C and R on chip)
`External clock input available
`High-speed MPU interface Compatible with both 68- and 80-series MPUs
4- and 8-bit interface available
`Serial interface available
`Character font: 5 * 8 dots
`Duty ratio: 1) 1/34 (SED1240)
2) 1/26 (SED1241)
3) 1/18 (SED1242)
`Simple command setting
`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
`Built-in electronic volume function
`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)
`Power
VDD VSS: 1.8 V to 5.5 V
VDD V5: 5.5 V to 16.0 V
`Wide operating temperature range: Ta = 30 to 85°C
`CMOS process
`Pad pitch: 90 m (min.)
`Package to be shipped
Chip (gold bump model): SED124*D**
TCP: SED124*T**
`This IC is not designed to resist radiation or intense light noise.Specifications
| Parameter |
Symbol |
Rating |
Unit |
| Supply voltage (1) |
VSS |
7.0 to +0.3 |
V |
| Supply voltage (2) |
Double boosting
Triple boosting |
VSS2 |
7.0 to +0.3
7.0 to +0.3
6.0 to +0.3 |
V |
| Supply voltage (2) |
V5, VOUT |
18.0 to +0.3 |
V |
| Supply voltage (3) |
V1, V2, V3, V4 |
V5 to +0.3 |
V |
| Input voltage |
VIN |
VSS 0.3 to +0.3 |
V |
| Output voltage |
VO |
VSS 0.3 to +0.3 |
V |
| Operating temperature |
Topr |
30 to +85 |
°C |
| Storing temperature |
TCP |
Tstr |
55 to +100 |
°C |
| Bare chip |
65 to +125 |
Notes
1. All voltages refer to VDD as 0 V.
2. For voltages V1, V2, V3 and V4, be sure to keep the conditions of "VDD V1 V2 V3 V4 V5" and "VDD (VSS, VSS2) V5 VOUT".
3. If the LSI is used outside the absolute maximum ratings, it may permanently break. Use under the electrical characteristics conditions is recommended for normal operation, otherwise, the LSI may malfunction, isadvantageously affecting its reliability.
DescriptionThe 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 userdefined 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.
SED1240 Data Sheet
