STE2028 Datasheet, PDF (1/4 Pages) STMicroelectronics – 162 x 130 RGB single-chip true 262k color LCD controller driver

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
R/!W
D/!C
!CS
!RD
!WR
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.
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www.st.com
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