LSI LS3101

LSI
LS3101
Simple LCD micro-controller
Features :
*
*
*
*
*
*
12 Input pad, 3 output pad
Direct drive buzzer output.
1024x12 bit ROM
48x4 bit of RAM.
16x3 LCD segment mask option
1/2 bias, 1/3 duty cycle LCD format
* 32768 Crystal/RC oscillator mask option
* Single 1.5V operation.
* Low cost and low price.
General Description
The LSI3101 is a simple micro-controller for LCD application. It has an internal ROM size of
1Kx12bit. A 48x4 bit of RAM. 16x3 LCD segment.
LSI
LS3101
Functional Description
1. RC Oscillator /Crystal
The LS3101 can use either a crystal oscillator or RC oscillator to provide the internal timing by
mask option.
2. Program ROM
The LSI3101 has internal 1Kx12 bit ROM providing simple operation. It has four internal stack.
3. Program RAM
The system has 48x4bit of program RAM (00H to 2fH).
4. Buzzer Control
The system can output 4khz/2khz alarm signal by mask option at B[0:1].
5. LCD driver
The system has 16 LCD segment pad with 3 common pads providing 16x3 LCD segment output.
6. I/O pad
The LS3101 has 12 input pad, I[0:11], and 3 output pad R[0:2]. The input pads can be selected (by
mask option) with/without internal pull-high resistor.
2
LSI
LS3101
Pin Assignment
DESIGNATION
B [0:1]
F512, VCAP
VEE
T2, T1
COSCO
COSCI
VDD
GND
I[0:11]
R[0:2]
C[1:3]
S[1:16]
TYPE
DESCRIPTION
OUTPUT
OUTPUT
OUTPUT
INPUT (PL)
OUTPUT
INPUT
POWER
POWER
INPUT(PH)
OUTPUT
OUTPUT
OUTPUT
Buzzer output
Doubler output
-1.5V
TEST pin
32KHz oscillator output
32KHz oscillator input
+1.5V power supply
Ground
Input key/option
Trigger output (r[0:2])
LCD Common output
LCD Segment output
Note: (PL) – pull low
(PH) - pull high
3
LSI
LS3101
Absolute Maximum Ratings
Supply voltage Vdd - Vss..........................0 to 5V
Input voltage Vin.................................Vss to Vdd
Operating temperature Top .............-10°C to 60°C
Storing temperature Tst ...................-40°C to 70°C
*Comments
Stress above those listed under bsolute Maximum Ratings” may cause permanent damage to the device.
These are stress rating only. Functional operation of this device at these or any other conditions above those
indicated in the operational sections of this specification is not implied and exposure to obsolute maximum
rating conditions for extended periods may affect device reliability.
D.C. Electrical Characteristics
(GND = 0V, Vdd = 1.5V, Ta = 25°C unless otherwise specified)
Parameter
Supply Voltage
Operating current
OSC. built-in cap
OSC. trimmer cap
Frequency stability
Buzzer output current
LCD frequency
Segment current
Common current
Trigger output current
Symbol
Vdd
Idd
Cd
Ctrim
^f/f
Ib
Flcd
Is
Ic
Ir
Min.
1.2
5
500
0.15
3.0
100
4
Typ.
1.5
2
20
64
-
Max.
1.8
6
35
10
-
Unit
V
µA
pF
pF
ppM
µA
Hz
µA
µA
µA
Conditions
No load
Vdd=1.6-1.4
Vbd-Vss=0.5
Vseg=0.2V
Vcom=0.2V
Vr-Vss=0.5
LSI
LS3101
Pad location
PAD
GND
VCAP
VEE
V512
C3
C2
C1
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
X(µ
µm)
-1500.0
-1500.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1295.0
-1303.0
-1163.0
-1023.0
-883.0
PAD
PB
R2
R1
R0
OSCO
OSCI
T1
GND
B1
B0
VDD
T2
I7
I6
I5
I4
I3
I2
I1
I0
I8
I9
I10
I11
Y(µ
µm)
-1500.0
-1366.0
-1110.0
-965.0
-825.0
-685.0
-545.0
-400.0
-260.0
-120.0
+20.0
+160.0
+300.0
+440.0
+580.0
+720.0
+860.0
+1000.0
+1140.0
+1350.0
+1350.0
+1350.0
+1350.0
5
X(µ
µm)
-743.0
-593.0
-449.0
-225.0
-75.0
+1105.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
+1246.0
Y(µ
µm)
+1350.0
+1350.0
+1350.0
+1350.0
+1350.0
+1340.0
+1340.0
+1140.0
+988.0
+678.0
+543.0
+395.0
+226.0
+78.0
-70.0
-216.0
-365.0
-513.0
-661.0
-809.0
-957.0
-1105.0
-1253.0
-1400.0
LSI
LS3101
PAD LOCATION
6
LSI
LS3101
APPLICATION CIRCUIT
7