SED1565 Datasheet, PDF (3/87 Pages) Epson Company – Direct display of RAM data through the display data RAM

SED1565 Series
GENERAL DESCRIPTION
The SED1565 Series is a series of single-chip dot matrix
liquid crystal display drivers that can be connected
directly to a microprocessor bus. 8-bit parallel or serial
display data sent from the microprocessor is stored in
the internal display data RAM and the chip generates a
liquid crystal drive signal independent of the
microprocessor. Because the chips in the SED1565
Series contain 65 × 132 bits of display data RAM and
there is a 1-to-1 correspondence between the liquid
crystal panel pixels and the internal RAM bits, these
chips enable displays with a high degree of freedom.
The SED1565 Series chips contain 65 common output
circuits and 132 segment output circuits, so that a single
chip can drive a 65 × 132 dot display (capable of
displaying 8 columns × 4 rows of a 16 × 16 dot kanji
font). The SED1567 Series chips contain 33 common
output circuits and 132 segment output circuits, so that
a single chip can drive 33 × 132 dot display (capable of
displaying 8 columns × 2 rows of 16 × 16 dot kanji
fonts). Thanks to the built-in 55 common output circuits
and 132 segment output circuits, the SED1568*** is
capable of displaying 55 × 132 dots (11 columns × 4
lines using 11 × 12 dots Kanji font) with a single chip.
The SED1569 Series chips contain 53 common output
circuits and 132 segment output circuits, so that a single
chip can drive 53 × 132 dot display (capable of displaying
11 columns × 4 rows of 11 × 12 dot kanji fonts).
Moreover, the capacity of the display can be extended
through the use of master/slave structures between
chips.
The chips are able to minimize power consumption
because no external operating clock is necessary for the
display data RAM read/write operation. Furthermore,
because each chip is equipped internally with a low-
power liquid crystal driver power supply, resistors for
liquid crystal driver power voltage adjustment and a
display clock CR oscillator circuit, the SED1565 Series
chips can be used to create the lowest power display
system with the fewest components for high-
performance portable devices.
FEATURES
• Direct display of RAM data through the display data
RAM.
RAM bit data: “1” Non-illuminated
“0” Illuminated
(during normal display)
• RAM capacity
65 × 132 = 8580 bits
• Display driver circuits
SED1565***: 65 common output and 132 segment
outputs
SED1566***: 49 common output and 132 segment
outputs
SED1567***: 33 common outputs and 132 segment
outputs
SED1568***: 55 common outputs and 132 segment
outputs
SED1569***: 53 common outputs and 132 segment
outputs
• High-speed 8-bit MPU interface (The chip can be
connected directly to the both the 80x86 series MPUs
and the 68000 series MPUs)
/Serial interfaces are supported.
• Abundant command functions
Display data Read/Write, display ON/OFF, Normal/
Reverse display mode, page address set, display start
line set, column address set, status read, display all
points ON/OFF, LCD bias set, electronic volume,
read/modify/write, segment driver direction select,
power saver, static indicator, common output status
select, V5 voltage regulation internal resistor ratio
set.
• Static drive circuit equipped internally for indicators.
(1 system, with variable flashing speed.)
• Low-power liquid crystal display power supply circuit
equipped internally.
Booster circuit (with Boost ratios of Double/Triple/
Quad, where the step-up voltage reference power
supply can be input externally)
High-accuracy voltage adjustment circuit (Thermal
gradient –0.05%/°C or –0.2%/°C or external input)
V5 voltage regulator resistors equipped internally,
V1 to V4 voltage divider resistors equipped internally,
electronic volume function equipped internally,
voltage follower.
• CR oscillator circuit equipped internally (external
clock can also be input)
• Extremely low power consumption
Operating power when the built-in power supply is
used (an example)
SED1565D0B 81 µA (VDD – VSS = VDD – VSS2 =
/SED1565DBB 3.0 V, Quad voltage, V5 – VDD = –
11.0 V)
SED1566D0B 43 µA (VDD – VSS = VDD – VSS2 =
/SED1566DBB 3.0 V, Triple voltage, V5 – VDD = –
8.0 V)
SED1567D0B 29 µA (VDD – VSS = VDD – VSS2 =
/SED1567DBB 3.0 V, Triple voltage, V5 – VDD = –
8.0 V)
SED1568D0B/SED1568DBB
/SED1569D0B/SED1569DBB
46µA (VDD – VSS = VDD – VSS2 =
3.0 V, Triple voltage, V5 – VDD = –
8.0 V)
Conditions: When all displays are in white and the
normal mode is selected (see page 60 *12 for details
of the conditions).
• Power supply
Operable on the low 1.8 voltage
Logic power supply VDD – VSS = 1.8 V to –5.5 V
Boost reference voltage: VDD – VSS2 = 1.8 V to
–6.0 V
Liquid crystal drive power supply: VDD – V5 = –4.5
V to –16.0 V
• Wide range of operating temperatures: –40 to 85°C
• CMOS process
• Shipping forms include bare chip and TCP.
• These chips not designed for resistance to light or
resistance to radiation.
EPSON
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