BOWIN E-LS1357-V1.2 4 digit time with colon default Datasheet

LSI
LS 1357
4 Digit Time With Colon Default
Timer
1. Features
4 digit LCD display with two dots.
Default Timer for Hour / Minute or Day / Hour by bonding option.
1 keys operation.
4 bonding option to select default timer value.
Very low power consumption.
32768 Crystal oscillator.
Single 1.5V operation.
Direct drive 1/2 bias 1/3 duty LCD(Vop 3.0V).
Alarm sound: The alarm sound continues for 60 seconds. It generates (4KHz x
4Hz x 1Hz) sound signal at first 60 seconds. The alarm sound will be stopped by
pressing any key.
Key tone : It will generate a sound signal (tone) when start/stop key is pressed.
Power on : All LCD segments and the alarm sound are turned on for two second.
LCD Drawing
Version 1.2 (24, 10, 2003)
LSI
LS 1357
Operation Flow
(a) After the power on, it return to display shows “Default timer value”, “colon”
and “TM” always on (not flash).
(b) Countdown Timer: This timer fixed timing count down. The step is one
minute or one day (selectable by bonding option) . Press “Start/Stop” key to
start counting. The “TM” always on. The “colon” 0.5 second on and 0.5
second off at counting, no flash at stop The alarm sound generates when the
timer reached zero, press “Start/Stop” key to stop counting even the timer in
counting or reached zero, press the key again then return to continues
counting.
(c) Press “Start/Stop” and hold it for 2 second, the timer will reload “Default
timer value” and stand-by for start counting.
(d) Keys: Only “ST/SP” key for start, stop and repeat.
Pin Assignment
DESIGNATION
TYPE
DESCRIPTION
B0, B1
V1, V2
VEE
T1, T2
OO
OI
VDD
GND
I0, I1, I2, I3, I4 and I5
C[1:3]
S[1:10]
PB
O0, O1, O2 and O3
OUTPUT
OUTPUT
OUTPUT
INPUT
OUTPUT
INPUT
POWER
POWER
INPUT(PL)
OUTPUT
OUTPUT
INPUT(PH)
OUTPUT
Buzzer output
Doubler output
-1.5V
TEST pin
32KHz oscillator output
32KHz oscillator input
+1.5V power supply
Ground
Input key
LCD Common output
LCD Segment output
RESET
Output Pin
Note: (PH) - pull high , (PL) – pull low.
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 Absolute 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 absolute maximum
rating conditions for extended periods may affect device
reliability.
D.C. Electrical Characteristics
2
Version 1.2(24, 10, 2003)
LSI
LS 1357
(GND = 0V, Vdd = 1.5V, Ta = 25°C unless otherwise specified)
Parameter
Supply Voltage
Operating current
OSC. built-in cap
OSC. trimmer cap
Buzzer output current
Buzzer output current
LCD frequency
Segment current
Common current
Symbol
Vdd
Idd
Cd
Ctrim
IOH
IOL
Flcd
Ilcd
Icom
Min.
1.25
5
6
6
0.15
3.0
Typ.
1.5
2
20
64
-
Max.
1.7
4
35
-
Unit
V
µA
pF
pF
MA
MA
Hz
µA
µA
Conditions
No load
Vbd=0.0
Vbd=1.5
Vseg=0.2V
Vcom=0.2V
Pad Location
Pad Coordinate
3
Version 1.2(24, 10, 2003)
LSI
LS 1357
PAD
X(µ
µm)
O2
O1
O0
O3
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
C1
C2
C3
V2
V1
-1063.00
-922.75
-731.25
-1063.00
-1063.00
-1063.00
-1063.00
-1063.00
-1063.00
-1063.00
-1063.00
-1063.00
-1063.00
-1063.00
-1033.00
-898.00
-763.00
-628.00
-493.00
PAD
Y(µ
µm)
-909.50
-909.50
-909.50
-703.50
-568.50
-433.50
-298.50
-163.50
-28.50
163.00
298.00
433.00
568.00
703.00
909.50
909.50
909.50
909.50
909.50
VEE
KOUT
PB
OO
OI
GND
BD[0]
T1
T2
B[1]
VDD
I5
I4
I3
I2
I1
I0
X(µ
µm)
-358.00
-123.50
20.25
321.75
874.75
1062.75
945.25
945.25
945.25
945.25
1062.75
1062.75
1062.75
1062.75
1062.75
1062.75
1062.75
Y(µ
µm)
909.50
909.50
909.50
909.50
909.50
717.00
547.50
412.50
277.50
142.50
-27.00
-162.00
-300.50
-444.50
-583.00
-727.00
-865.00
Application Circuit
4
Version 1.2(24, 10, 2003)
LSI
LS 1357
Key`s summary
Press once
I5(Key/Start/Stop Start/Stop
)
Press and hold 2 Second
Reset default value
Bonding option A (Range Selection)
Pin connection
Pin connection
I4 without resistance VDD: Day / Hour Timer GND: Hour / Minute Timer
Bonding OptionB
ptionB(Default Value)
I3
I2
I1
I0
Default Value Day
GND GND GND GND 1
GND GND GND VDD 2
GND GND VDD GND 3
GND GND VDD VDD 4
GND VDD GND GND 5
GND VDD GND VDD 6
GND VDD VDD GND 7
GND VDD VDD VDD 14
VDD GND GND GND 28
VDD GND GND VDD 30
VDD GND VDD GND 45
VDD GND VDD VDD 60
VDD VDD GND GND 70
VDD VDD GND VDD 80
VDD VDD VDD GND 90
VDD VDD VDD VDD 99
Default Value Hour
1
2
3
4
5
6
8
10
12
18
36
60
70
80
90
24
Output Waveform
5
Version 1.2(24, 10, 2003)
LSI
LS 1357
LCD Drawing
LCD Table(LCD – 13XX)
COM1 COM2
COM3
Pin Name
Pad
COM3
Pin 8
S5
2b
2c
2d
Pin 9
S6
3f
col
3e
Pin 10
S7
3a
3g
3d
TM
Pin 11
S8
3b
3c
4e
1g
1d
Pin 12
S9
4f
4g
4d
2f
1b
1c
Pin 13
S10
4a
4b
4c
2a
2g
2e
Pin Name
Pad
Pin 1
C3
Pin 2
C2
Pin 3
C1
COM1
Pin 4
S1
1f
1e
Pin 5
S2
1a
Pin 6
S3
Pin 7
S4
COM2
6
COM1 COM2
COM3
Version 1.2(24, 10, 2003)
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