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STE2028 Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer STE2028
Beschreibung 162 X 130 RGB single-chip true 262k color LCD controller driver
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 4 Seiten
STE2028 Datasheet, Funktion
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STE2028
162 x 130 RGB single-chip true 262k color LCD controller driver
Data Brief
Features
162x130 RGB display matrix
385K Bits display data RAM
2M color palette
262k color mode
Dual partial display mode
Partial vertical scrolling
Programmable number of lines
N-line inversion
Programmable frame rate over temperature
Digitally programmable LCD voltage
(up to 1024 steps)
Digitally programmable LCD voltage
compensation over temperature
Selectable input interface:
– 68000 & 8080 Parallel interfaces
(read and write)
– 3-lines and 4-lines SPI interface
(read and write)
– 3-lines 9-Bit serial interface
(read and write)
1 Look-up table for gamma setting
Fully integrated oscillator requires no external
components.
Fully integrated bias system and voltage
generator
Advanced MLS driving scheme for optimal
color images rendering (P=4).
Designed for chip-on-glass (COG) and chip-
on-foil (COF) applications
Interface supply voltage range from 1.65V to
3.6V
Logic supply voltage range from 1.65V to
1.95V
High voltage generator supply voltage range
from 2.2V to 3.6V
Display supply voltage range from 4.5V to
20.8V
One time programmable (OTP) non volatile
embedded memory
On chip calibration (with OTP Cells) of key
configuration parameters
Specific mode functionality to drive displays
smaller than 162x130 (such as 160x128)
Figure 1.
Block diagram
C3 to C392
R0 to R161
VCOM
+VRPOS
+VRPOS_SNS
-VRNEG
-VRNEG_SNS
+VCPOS
+VCPOS_SNS
-VCNEG
-VCNEG_SNS
VDDB
VDDA
VPP
VSSD
VSSI_AUX
TEST_MODE
TEST_VREF
TEST_VC2POS
TEST_VC2NEG
BIAS VOLTAGE
GENERATOR
DAC
HIGH VOLTAGE
GENERATOR
COLUMN
DRIVERS
ROW
DRIVERS
GRAY LEVELS GENERATOR
MLS ROW DRIVING
LOGIC
MLS COLUMN DRIVING LOGIC
DATA LATCH & GAMMA CORRECTION
130 x 162 x 18 Bit
Display Data RAM
VDDD
VDDI_AUX
BUFFER
DDRAM Col Adr
OTP(Memory)
DATA
REGISTER
DISPLAY
CONTROL
LOGIC
TIMING
GENERATOR
OSC
COMMAND DECODER
RESET
TEST
9 Bit SERIAL
3 & 4 Line SPI
Parallel 8080 Parallel 68K
TE
TEST_OSCOUT
TEST_OSCIN
!RES
SEL 0
SEL 1
SEL 2
VDDI SCL SDA
D[0..7]
E
!RD
R/!W
!WR
D/!C
!CS
LR238
Description
The STE2028 is a low power CMOS LCD
controller driver featuring an extremely low
current consumption.
Designed to drive a 162 rows by 390 columns or
262k colors graphic display, with MLS (Multi-line-
selection) algorithm, the STE2028 provides all the
necessary functions in a single chip, including on-
chip LCD supply and bias voltage generators,
resulting in a minimum of externals components.
June 2007
Rev 2
For further information contact your local STMicroelectronics sales office.
1/4
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