ST8012 Datasheet, PDF (1/47 Pages) Sitronix Technology Co., Ltd. – 120 Output LCD Common/Segment driver IC

ST
ST8012
Dot Matrix Lcd
120 Output LCD Common/Segment driver IC
Notice: Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice. This is not a final
specification. Some parameters are subject to change.
1. DESCRIPTION
Low-power liquid crystal display power supply circuit
equipped internally.
The ST8012 is a 120-output segment/common driver
Booster circuit (with Boost ratio of 2X/3X/4X/5X/6X)
IC suitable for driving small/medium scale dot matrix
Abundant command functions
LCD panels, and is used in PDA or electronic dictionary.
The ST8012 is good as a segment driver or a common
LCD bias set, electronic volume, V_SS voltage
regulation internal resistor ratio and booster
driver or a common/segment driver, and it can create a
frequency.
low power consuming, high-resolution LCD. The
All Functions have initial value, user can use the
ST8012 have eight modes can selected to set common
default value or setting by programmable pin to set.
and segment numbers by select pin. The ST8012
If select segment mode then except booster circuit
also have analog DC/DC converter to use.
will opened others circuit (follower and regulator
2. FEATURES
circuit) will automatic closed.
When don’t used the serial interface, we can select
Number of LCD drive outputs: 120
one of default modes by serial interface pins please
Supply voltage for LCD drive: Max +16V
see Table5.
Supply voltage for the logic system: +2.5 to +5.5 V
Package: 154-pin COB.
Low power consumption and low output impedance
(Segment mode)
SEL2,SEL1,SEL0
000
001
010
011
100
101
110
111
DUTY
---
1/32
1/48
1/64
1/80
1/96
1/112
1/120
BIAS
Segment mode
1/6 or 1/5
1/7 or 1/5
1/9 or 1/7
1/9 or 1/7
1/10 or 1/8
1/11 or 1/9
1/11 or 1/9
Displa
y duty
select
able
by
select
pin
Shift clock frequency
- 20 MHz (MAX.): VDD = +5.0 ± 0.5 V
- 15 MHz (MAX.): VDD = +3.0 to + 4.5 V
- 12 MHz (MAX.): VDD = +2.5 to + 3.0 V
Adopts a data bus system
4-bit parallel / serial input modes are selectable with a
mode (P/S) pin
Automatic transfer function of an enable signal
Automatic counting function which, in the chip
selection mode, causes the internal clock to be
stopped by automatically counting 88、72、56 、40、
24、8 or 120 bits of input data
Line latch circuits are reset when XDISPOFF active
(Common mode)
Shift clock frequency: 4 MHz (MAX.)
V1.6
1/ 47
2004/09/08