EM MICROELECTRONIC
- MARIN SA
EM6125
Digitally programmable 65 and 81 multiplex rate LCD
Controller and Driver
Features
Slim IC for COG, COF and COB technologies
2
I C & Serial bus interface
Internal display data RAM
2 digitally programmable multiplex rates :
-
81 rows x 102 columns
-
65 rows x 118 columns
LCD supply voltage internally generated and digitally
programmable from 3V to 11V
Low operating current consumption: 120µA (typ)
No external components needed except one V
LCD
capacitor
On chip
-
4 intermediate bias voltages generation
-
Oscillator for LCD refresh (no external components
required)
High noise immunity on inputs
Row and column drivers mirroring for COG or COF
connections flexibility
Partial display mode with 17 active rows for current
consumption reduction
Sleep mode for a nearly null current consumption
Wide V
DD
supply voltage from 1.8V to 5V.
Wide temperature range: -40°C to +85°C
Typical Applications
Mobile phones
Smart cards
Automotive displays
Portable, battery operated products
Balances and scales, utility meters
Typical Operating Configuration
40 row drivers
41 row drivers
102 columns outputs
EM6125
V
LCD
SCL SDA RES Vss1 Vss2 V
DD1
V
DD2
V
HV
Figure 1
Pin Configuration
Description
The EM6125 is a bit map controller and driver for full dot
matrix monochrome STN LCD displays. The driving
capability is 81 rows x 102 columns (10 rows of
characters + one row of icons) or 65 rows x 118 columns
(8 rows of characters + one row of icons). There is a one
to one relation between LCD pixels and bits of the
Display Data RAM.
The EM6125 is extremely low power consumption LCD
controller and driver product. The typical current
consumption is about 120µA with no external component
except the capacitor connected to V
LCD
. One important
feature on EM6125 is the partial display mode, which
enables important current consumption reduction. With
this function selected, only 17 rows remain active,
needed V
LCD
decreases and the commutation
frequencies of row and column drivers are also
decreased. These three effects of partial display mode
reduce drastically current consumption.
Figure 2
Copyright
2001, EM Microelectronic-Marin SA
1
www.emmicroelectronic.com
EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
