SED1575 Series
The SED1577 Series
33 circuits for the common output and 200 circuits
for the segment output
• High-speed 8-bit MPU interface (Both the 80 and 68
series MUPs can directly be connected.)/serial
interface enabled
OVERVIEW
The 1575 series is a 1-chip dot matrix liquid crystal
driver that can be connected to the bus of a
microcomputer. It stores the 8-bit parallel or serial
display data sent from the microcomputer in the built-in
display data RAM and generates liquid crystal drive
signals independently of the microcomputer. Since it
incorporates 65 x 200 bits of the display data RAM and
the one-dot pixel of the liquid crystal panel and one bit
of the built-in RAM have a one-to-one correspondence,
it enables display with the high degree of freedom.
The SED1575 series incorporates 65 circuits of the
common output and 168 circuits of the segment output
and can display 65 × 168 dots (capable of displaying 10
columns × 4 rows of a 16 × 16 dot kanji font) using the
single chip. The SED1577 Series incorporates 33 circuits
of the common output and 200 circuits of the segment
output and can display 33 × 200 dots (capable of
displaying 12 columns × 2 rows of a 16 × 16 dot kanji
font). It can also expand the display capacity by using
the two chips for the master and slave configuration.
Since the read/write operation of the display data RAM
does not require external operation clocks, the SED1575
series can be operated with the minimum current
consumption. Since it also incorporates a liquid crystal
drive power supply with low current consumption,
liquid crystal drive power supply voltage adjusting
resistor, and display clock CR oscillator circuit, it can
provide a display system for high performance handy
equipment with the minimum current consumption and
the minimum parts configuration.
• Abundant command functions
Display Data Read/Write, Display ON/OFF, Display
Normal Rotation/Reversal, Page Address Set, Display
Start Line Set, column address set, Status Read,
Power Supply Save Display All Lighting ON/OFF,
LCD Bias Set, Read Modify Write, Segment Driver
Direction Select, Electronic Control, V5 Voltage
Adjusting Built-in Resistance Ratio Set, Static
Indicator, n Line Alternating Current Reversal Drive,
Common Output State Selection, and Built-in
Oscillator Circuit ON
• Built-in static drive circuit for indicators (One set,
blinking speed variable)
• Built-in power supply circuit for low power supply
liquid crystal drive
Booster circuit (Boosting magnification - double,
triple, quadruple, boosting reference power supply
external input enabled)
• 3% high accuracy alternating current voltage adjusting
circuit (Temperature gradient: –0.05%/°C)
Built-in V5 voltage adjusting resistor, built-in V1 to
V4 voltage generation split resistors, built-in
electronic control function, and voltage follower
• Built-in CR oscillator circuit (external clock input
enabled)
• Ultra-low power consumption
• Power supplies
Logic power supply: VDD – VSS = 2.4 to 3.6 V
(SED1575D3B, SED1577D3B)
FEATURES
• Direct display of RAM data using the display data
RAM
VDD – VSS = 3.6 to 5.5 V
RAM bit data “1” .... goes on.
“0” .... goes off (at display normal
rotation).
(SED1575D0B, SED1577D0B)
Boosting reference power supply: VDD – VSS = 1.8 to
6.0 V
• RAM capacity
65 × 200 = 13,000 bits
• Liquid crystal drive circuit
The SED1575 Series
65 circuits for the common output and 168 circuits
for the segment output
Liquid crystal drive power supply: V5 – VDD = –4.5
to –18.0 V (SED1575***)/–4.5 V to –16.0 V
(SED1577***)
• Wide operating temperature range –40 to 85°C
• CMOS process
• Shipping form Bare chip, TCP
• No light-resistant and radiation-resistant design are
provided.
Series specification
Product
name
Voltage
[V]
VREG temperature Shipping
Duty
Bias
SEG Dr COM Dr
gradient
–0.05%/°C
–0.05%/°C
–0.05%/°C
–0.05%/°C
–0.05%/°C
–0.05%/°C
–0.05%/°C
–0.05%/°C
form
Bare chip
Bare chip
TCP
SED1575D0B –3.6 to –5.5
SED1575D3B –2.4 to –3.6
SED1575T0A –3.6 to –5.5
SED1575T3A –2.4 to –3.6
SED1577D0B –3.6 to –5.5
SED1577D3B –2.4 to –3.6
SED1577T0* –3.6 to –5.5
SED1577T3* –2.4 to –3.6
1/65
1/65
1/65
1/65
1/33
1/33
1/33
1/33
1/9, 1/7
1/9, 1/7
1/9, 1/7
1/9, 1/7
1/6, 1/5
1/6, 1/5
1/6, 1/5
1/6, 1/5
168
168
168
168
200
200
200
200
65
65
65
65
33
33
33
33
TCP
Bare chip
Bare chip
TCP
TCP
EPSON
10–1
5秒后页面跳转
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