MC141531 is a CMOS LCD Driver which consists of 3 annunciator outputs and 137 high voltage LCD driving signals (17 common and 120 segment). It has parallel interface capability for operating with general MCU.
Besides the general LCD driver features, it has on chip LCD bias voltage
generator circuits such that limited external component is required during
application.
•Single Supply Operation, 2.4 V - 3.5 V
•Operating Temperature Range : -30˚C to 85˚C
•Low Current Stand-by Mode (<500nA)
•On Chip Bias DC/DC Converter
•8 bit Parallel Interface
•Graphic Mode Operation
•On Chip 120x17 Graphic Display Data RAM
•Master clear RAM
•120 Segment Drivers, 17 Common Drivers
•1/16, 1/17 Multiplex Ratio
•1:5 bias ratio
•Re-mapping of Row and Column Drivers
•Three Stand Alone Annunciator (Static Icon) Driver Circuits
•Low Power Icon Mode Driven by Com16 in Special Driving Scheme
•Selectable LCD Drive Voltage Temperature Coefficients
•16 level Internal Contrast Control
•External Contrast Control
•Standard TAB (Tape Automated Bonding) Package, Gold Bump Die
MC141531
MC141531T
TAB
MCC141531Z
Gold Bump Die
ORDERING INFORMATION
MC141531TTAB
MCC141531Z Gold Bump Die
REV 4
3/97
This document contains information on a new product. Specifications and information herein are subject to change without notice.
25mA
Operating Temperature-30 to +85˚C
Storage Temperature Range-65 to +150˚C
This device contains circuitry to protect the inputs
against damage due to high static voltages or electric fields; however, it is advised that normal precautions to be taken to avoid application of any voltage
higher than maximum rated voltages to this high
impedance circuit. For proper operation it is recommended that Vin and V
range VSS < or = (Vin or V
be constrained to the
out
) < or = VDD. Reliability
out
of operation is enhanced if unused input are connected to an appropriate logic voltage level (e.g.,
either VSS or VDD). Unused outputs must be left
open. This device may be light sensitive. Caution
should be taken to avoid exposure of this device to
* Maximum Ratings are those values beyond which damage to the device may occur. Functional
operation should be restricted to the limits in the Electrical Characteristics tables or Pin Descrip-
any light source during normal operation. This
device is not radiation protected.
tion section.
VSS = AVSS = DVSS (DVSS = VSS of Digital circuit, AVSS = VSS of Analogue Circuit)
VDD = AVDD = DVDD (DVDD = VDD of Digital circuit, AVDD = VDD of Analogue Circuit)
ELECTRICAL CHARACTERISTICS (Voltage Referenced to VSS, VDD=2.4 to 3.5V, TA=25˚C)
SymbolParameterTest ConditionMinTypMaxUnit
DV
AV
Logic Circuit Supply Voltage Range
DD
DC/DC Converter Circuit Supply Voltage Range
DD
I
Access Mode Supply Current Drain
AC
(AVDD + DVDD Pins)
I
Display Mode Supply Current Drain
DP
(AVDD + DVDD Pins)
I
Standby Mode Supply Current Drain
SB1
(AVDD + DVDD Pins)
(Absolute value referenced to VSS)2.4
2.4
VDD=3.0V, Internal DC/DC Converter On, Tripler
Enabled, Annunciator On/Off, R/W accessing,
T
=1MHz, Osc. Freq.=38.4kHz, Display On, 1/7
cyc
Mux Ratio
VDD=3.0V, Internal DC/DC Converter On, Tripler
Enabled,
Annunciator On/Off, R/W halt, Osc. Freq.=38.4kHz,
Display On, 1/17Mux Ratio
ELECTRICAL CHARACTERISTICS (Voltage Referenced to VSS, VDD=2.4 to 3.5V, TA=25˚C)
SymbolParameterTest ConditionMinTypMaxUnit
V
Input high voltage
IH1
0.8*V
DD
-
V
DD
(RES, OSC2, CS, D0-D7, R/W, D/C, OSC1)
V
Input Low voltage
IL1
0
-
0.2*V
DD
(RES, OSC2, CS, D0-D7, R/W, D/C, OSC1)
V
LCD Display Voltage Output
LL6
V
LL5
V
LL4
V
LL3
V
LL2
V
LL6
V
LL5
V
LL4
V
LL3
V
LL2
I
OH
(V
, V
LL5
, V
LL4
LL6
LCD Display Voltage Input
(V
, V
LL5
, V
LL4
LL6
Output High Current Source
(D0-D7, Annun0-2, BP, OSC2)
I
Output Low Current Drain
OL
(D0-D7, Annun0-2, BP, OSC2)
I
Output Tri-state Current Drain Source
OZ
(D0-D7, OSC2)
IIL/IIHInput Current
, V
, V
LL3
LL3
, V
, V
LL2
LL2
Pins)
Pins)
Voltage Divider Enabled
External DC/DC Converter, Voltage Divider Disable
V
V
out=VDD
=0.4V
out
-0.4V
-
-
-
-
-
5
0
0
0
0
50
-
-1
V
0.8*V
0.6*V
0.4*V
0.2*V
-
-
-
-
-
-
-
-
R
-
-
R
-
R
-
R
-
R
V
CC
V
LL6
V
LL5
V
LL4
V
LL3
-
-50
1
-1-1µA
(RES, OSC2, CS, D0-D7, R/W, D/C , OSC1)
R
Channel resistance between LCD driving signal
on
pins (SEG and COM) and driving voltage input
pins (V
V
Memory Retention Voltage (DVDD)Standby mode, retain all internal configuration and
SB
LL2
to V
LL6
)
During Display on, 0.1V apply between two terminals, VCC within operating voltage range
--10kΩ
2--V
RAM data
CINInput Capacitance
-57.5pF
(OSC1, OSC2, all logic pins)
Temperature Coefficient Compensation*
PTC0
PTC1
PTC2
PTC3
V
CN
Flat Temperature Coefficient
Temperature Coefficient 1*
Temperature Coefficient 2*
Temperature Coefficient 3*
Internal Contrast Control
(VR Output Voltage)
TC1=0, TC2=0, Voltage Regulator Disabled
TC1=0, TC2=1, Voltage Regulator Enabled
TC1=1, TC2=0, Voltage Regulator Enabled
TC1=1, TC2=1, Voltage Regulator Enabled
Regulator Enabled, Internal Contrast control
Enabled. (16 Voltage Levels Controlled by Software.
-
-
-
-
0.0
-0.18
-0.22
-0.35
-
-
-
-
-± 18-%
Each level is typically 2.25% of the Regulator Output
Voltage. )
*The formula for the temperature coefficient (TC) is:
V
V
V
V
V
V
V
V
V
V
V
V
µA
µA
µA
%
%
%
%
TC(%)=
VR at 50˚C - VR at 0˚C
50˚C - 0˚C
MC141531
3–144
X
VR at 25˚C
1
X100%
MOTOROLA
AC ELECTRICAL CHARACTERISTICS (TA=25˚C, Voltage referenced to VSS, AVDD=DVDD=3V)
SymbolParameterTest ConditionMinTypMaxUnit
F
F
F
Oscillation Frequency of Display timing generator60Hz Frame Frequency
OSC
Either External Clock Input or Internal Oscillator
Enabled
Backplane Frequency of Annunciator
ANN
(Annun0-3, BP)
Frame FrequencyGraphic Display Mode,
FRM
50% duty cycle
Annunciator on, Fosc=38.4KHz
Timing generator freq. = 38.4kHz
-38.4-kHz
-30-Hz
-60
-Hz
OSCInternal Oscillation Frequency with different value
of feedback resistor
Note: F
F
FRM
ANN
= F
= F
OSC
OSC
/ 640
/ 1280
280k
260k
90k
70k
Oscillation
Frequency
(Hz)
50k
30k
10k
100k500k1.0M1.5M2.0M
Figure 1. Internal Oscillator Frequency Relationship with External Resistor Value