Download datasheet for ML9098B by LAPIS Semiconductor

FEDL9098B-01
Issue Date: Aug. 10, 2010
ML9098B
Clock IC with Static and 1/2-Duty LCD Drivers
GENERAL DESCRIPTION
The ML9098B is a 24-hour/ 12-hour car clock IC that drives 1/2-duty dynamic or static LCDs. It has a wide range
of power supplies using oscillation of 4.194304 MHz. The ML9098B has time adjustment functions in hour,
minute, and 30-minute units.
FEATURES
• 24-hour or 12-hour system
• Power supplies ranging from 3.0 to 5.5V
• Designed for 1/2-duty or static LCDs
• 4.194304MHz (crystal oscillation)
• Package:
48-pin plasticTQFP (TQFP48-P-0707-0.50-K)
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ML9098B
BLOCK DIAGRAM
64HZ
VDD
COM1
Power-on reset
circuit
COM2
Seg1
RESET
Seg2
Xin
Frequency divider
Xout
Seg3
Common
Driver
Seg4
Seg5
DU_SEL
Seg6
M
SW_EN_SEL
Seg8
Second counter
Seg9
Segment
decoder
Hour counter
BLANK
A/C
Seg10
Minute counter
Seg11
Segment drivers
SET
Time adjustment
H
Seg7
Seg12
Seg13
Seg14
Seg15
Seg16
Seg17
RESET
COL_SEL
DISP_SEL
Seg18
Seg19
Seg20
Seg21
TEST
VCC
Seg22
Seg23
Seg24
BIAS
Seg25
Seg26
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PIN CONFIGURATION (TOP VIEW)
SEG26
1
36
SEG13
VSS
2
35
SEG12
VDD
3
34
SEG11
VCC
4
33
SEG10
Xout
5
32
SEG9
Xin
6
31
SEG8
H
7
30
NC
8
29
SEG7
SEG6
M
9
28
SEG5
SET
10
27
SEG4
A/C
11
26
SEG3
BLANK
12
25
SEG2
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PIN DESCRIPTION
COM1
COM2
O
O
Pull-up/
Pull-down


A/C
I
Pull-up
H
I
Pull-up
M
I
Pull-up
BLANK
I

COL_SEL
I

Xin
Xout
I
O

SET
I
Pull-up
64HZ
O

SEG1 to SEG26
O

VDD
VCC
VSS






DISP_SEL
I

SW_EN_SEL
I

DU_SEL
I

BIAS


NC


I
Pull-up
Pin
TEST
I/O
Description
Output pin for LCD common driver.
Output pin for 1/2-duty mode LCD common driver.
Pin for clearing all circuits. This pin is placed normally at a "H" level with
an internal pull-up resistor. The counters and frequency divider are
reset when this pin goes at a “L” level.
Hour adjustment pin (for general areas). This pin is placed normally at a
"H" level with an internal pull-up resistor. The "Hour" indication is fast
forwarded at 2 Hz when this pin is low.
Minute adjustment pin. This pin is placed normally at a "H" level with an
internal pull-up resistor. The "Minute" indication is fast forwarded at 2
Hz when this pin is low.
Display ON/OFF pin. "L" level: Display Off, “H" level: Display On.
Pin for selecting the colon output as "Flashing" or "Lighting".
"L" level: Flashing, "H" level: Lighting
Crystal oscillation pins for connecting a crystal and the capacitors (Cin
and Cout) externally.
Zero adjustment pin. This pin is placed normally at a "H" level with an
internal pull-up resistor. The clock provides 30-minute adjustment when
this pin is low.
64Hz output pin
Output pins from SEG1 to SEG13 are used in 1/2-duty mode. Output
pins from SEG1 to SEG26 are used in static mode.
Power supply pin for the logic section.
Power supply pin for the driver section.
Ground pin.
Pin for selecting the 12-hour or 24-hour system.
“H” level: 24-hour system, “L” level: 12-hour system with AM/PM display.
Adjustment enable pin.
“L” level: The H, M, and SET pins are disabled.
“H” level: The H, M, and SET pins are enabled.
Duty select pin.
"H" level: 1/2-duty dynamic mode, "L" level: Static mode.
Supply voltage pin for the middle level voltage of the common outputs.
In the static display mode, this pin should be open.
No connection.
IC testing pin. This pin is placed normally at a "H" level with an internal
pull-up resistor. Leave this pin open or fix it to a “H” level.
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ML9098B
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Condition
Rating
Unit
Power supply voltage
(Drivers)
VCC
Ta = 25°C
–0.3 to +6.5
V
Power supply voltage
(Logic circuitry)
VDD
Ta = 25°C
–0.3 to +6.5
V
Power supply voltage
(Drivers & logic circuitry)
VSS
Ta = 25°C
0
V
Input voltage
(Logic circuitry)
VI
Ta = 25°C
–0.3 to VDD+0.3
V
Output voltage
(Drivers)
VDO
Ta = 25°C
–0.3 to VCC+0.3
V
Output voltage
(Logic circuitry)
VLO
Ta = 25°C
–0.3 to VDD+0.3
V
Output current
(Drivers)
IDO
Ta = 25°C
–5 to +5
mA
Output current
(Logic circuitry)
ILO
Ta = 25°C
–5 to +5
mA
Power dissipation
PD
Ta  105°C
416
mW
TSTG
—
–55 to +150
°C
Storage temperature
* VDD=VCC
RECOMMENDED OPERATING CONDITIONS
VSS = 0V
Parameter
Power supply voltage
(Drivers & logic circuitry)
Operating temperature
Crystal frequency
Symbol
Condition
Min.
Typ.
Max.
Unit
VCC & VDD
—
3.0
—
5.5
V
Ta
—
–40
—
105
°C
f(Xtal)
—
4.194304
MHz
* VDD = VCC
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ELECTRICAL CHARACTERISTICS
DC Characteristics
(VCC = VDD=3.0 to 5.5 V, Ta = 40 to +105°C)
Parameter
Applicable pin
Symbol
Condition
Min.
Typ.
Max.
Unit
"H" input voltage
*1)
VIH
VDD = 3.0 to 5.5 V
VDD0.8
—
—
V
"L" input voltage
*1)
VIL
VDD = 3.0 to 5.5 V
—
—
IIH2
VDD = VIN = 3.30.3V
VDD = VIN = 5.00.5V
–1
—
1
A
IIL2
VDD = 3.30.3V, VIN = 0 V
VDD = 5.00.5V, VIN = 0 V
–200
–400
–65
–155
–20
–40
A
–1
—
1
A
–1
—
1
A
3.1
—
—
V
4.8
—
—
V
1.45
—
1.85
V
2.3
—
2.7
V
—
—
0.2
V
—
—
0.2
V
3.1
—
—
V
4.8
—
—
V
—
—
0.2
V
—
—
0.2
V
VDD –0.5
—
—
V
—
—
0.5
V
0.9
1.7
2.6
V
—
—
400
A
—
—
600
A
SET, H, M , A/C,TEST
Input current
COL_SEL,
DISP_SEL,
SW_EN_SEL,
DU_SEL, BLANK
IIH3
IIL3
VOCH
COM output voltage
VOCM
VOCL
Output voltage
VOSH
SEG output voltage
VOSL
VOH
64HZ
VOL
Power-on reset
VDD
Dynamic supply
VDD & VCC
current
VRES
ID1
ID2
VDD = VIN = 3.30.3V
VDD = VIN = 5.00.5V
VDD = 3.30.3V, VIN = 0 V
VDD = 5.00.5V, VIN = 0 V
VCC = 3.3 V, BIAS = 1.65 V,
VSS = 0 V, IO = –150 A
VCC = 5.0 V, BIAS = 2.5 V,
VSS = 0 V, IO = –150 A
VCC = 3.3 V, BIAS = 1.65 V,
VSS = 0 V, IO = 150 A
VCC = 5.0 V, BIAS = 2.5 V,
VSS = 0 V, IO = 150 A
VCC = 3.3 V, BIAS = 1.65 V,
VSS = 0 V, IO = 150 A
VCC = 5.0 V, BIAS = 2.5 V,
VSS = 0 V, IO = 150 A
VCC = 3.3 V, BIAS = 1.65 V,
VSS = 0 V, IO = –30 A
VCC = 5.0 V, BIAS = 2.5 V,
VSS = 0 V, IO = –30 A
VCC = 3.3 V, BIAS = 1.65 V,
VSS = 0 V, IO = +30 A
VCC = 5.0 V, BIAS = 2.5 V,
VSS = 0 V, IO = +30 A
VDD = 3.3V, IOH = –0.1mA
VDD = 5.0V, IOH = –0.1mA
VDD = 3.3V, IOL = 0.1mA
VDD = 5.0V, IOL = 0.1mA
*2)
VDD = 3.3V, No Operation
*3
VDD = 5.0V, No Operation
*3
VDD0.2 V
*1) Applicable to the following pins:
BLANK, SET, H, M, A/C, and COL_SEL, DISP_SEL, SW_EN_SEL, DU_SEL, TEST
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*2) Do the followings to operate the power-on reset circuit properly:
- Make a slope of a rise time of VCC/VDD equal to or smaller than 28.7V/ms.
- Connect a smoothing capacitor of 1000 pF 20% or more between the VDD pin and GND.
*3) f = 4.194304 MHz, open inputs, and non-loaded outputs.
POWER-ON/OFF TIMING
[Voltage]
VDD, VCC pin voltage
BIAS pin voltage (1/2Duty)
[Time]
t
t0
t
• Connect VDD and VCC pins externally to provide the equal potential.
• To prevent IC erroneous operation, keep the power ON/OFF timing.
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FUNCTIONAL DESCRIPTIONS
Time Base
A 4.194304MHz crystal oscillation circuit (including an amplifier and a feedback resistor) is built in the LSI
* Keep the crystal and external capacitors as close to this LSI as possible to minimize wiring for connections.
* The values of external components, such as a crystal and capacitors, should be determined including capacitance
of user's circuit boards. It is recommended to contact a crystal manufacturer.
7-Segment Display Format
a
b
f
g
(7 segments)
c
e
d
Display Device
1/2-duty dynamic or static LCDs
Relationship between COM Output and Display
Static mode
1a
2a
3a
4a
col
AM
1b
2f
1c
2e
1g
1e
PM
2b
3f
2g
2c
3g
3e
3b
4f
3c
4e
4b
4g
4c
col
1d
digit1
2d
digit2
colon
3d
digit3
4d
digit4
Dynamic mode
COM1
COM2
3g
1e
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Driver Connection with LCD
Pin
COM1
COM2
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
1/2 Duty
COM1
—
PM
1a, 1g, 1e, 1d
1c
2e
2g
2d
2c
3e
3g
3c
4e
4g
4d
—
—
—
—
—
—
—
—
—
—
—
—
—
Static
—
COM2
AM
4c
1b
2f
2a
2b
col
3f
3a,3d
3b
4f
4a
4b
—
—
—
—
—
—
—
—
—
—
—
—
—
COM1
—
AM
PM
1a, 1g, 1e, 1d
1b
1c
2e
2f
2a
2g
2b
2c
2d
col
3e
3f
3a, 3d
3g
3b
3c
4e
4f
4a
4g
4b
4c
4d
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Display Mode
4-digit hour and minute display in 24/12 -hour system
Hour display
1 to 12 or 0 to 23
Minute display
00 to 59
Time is not displayed when the most significant digit is 0 (Most Significant Digit Zero Suppressing function)
24-hour display
1:00
2:00
3:00
4:00
5:00
6:00
7:00
8:00
9:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
0:00
12-hour display
AM 1:00
AM 2:00
AM 3:00
AM 4:00
AM 5:00
AM 6:00
AM 7:00
AM 8:00
AM 9:00
AM 10:00
AM 11:00
PM 12:00
PM 1:00
PM 2:00
PM 3:00
PM 4:00
PM 5:00
PM 6:00
PM 7:00
PM 8:00
PM 9:00
PM 10:00
PM 11:00
AM 12:00
Time Adjustment
Hour/minute fast-forward function
The hour and minute digits can be fast forwarded separately. The H (Hour setting)/M (Minute setting) pins fast
forward the hour/minute digits. One push counts one hour/minute. When the hour/minute switch is continuously
pressed, the hour/minute digit is incremented at 2Hz.
The H and M pins are high (inactive state) by the pull-up resistors when the pins are open.
These pins are active when driven at a “L” level externally.
The hour and minute digits can be adjusted at the same time.
The lower counters continue to operate regularly while the hour digit is adjusted, but a carry from the minute to
hour digit is not performed.
A carry to the hour digit is not performed while the minute digit is adjusted.
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FEDL9098B-01
ML9098B
Zero Adjustment Function (30 minute reset to zero)
The SET (Zero adjustment) pin is held at a “H” level (inactive state) with a pull-up resistor when the pin is open.
The minute and second digits are reset to 00’00” when the SET pin is driven at a “L” level externally, while the
hour digit is unchanged or 1 is added to the hour digit.
If the minute digit is less than 30 minutes, the hour digit is unchanged.
When the minute digit exceeds 30 minutes, 1 is added to the hour digit.
<Examples of Zero Adjustments>
(X1) hours 30 minutes 00 seconds
X hours 00 minutes 00 seconds
(X) hours 29 minutes 59 seconds
(X) hours 30 minutes 00 seconds
X hours 59 minutes 59 seconds
(X1) hours 29 minutes 59 seconds
 X hours 00 minutes 00 seconds
 (X1) hours 00 minutes 00 seconds
Blanking of Display
Display ON/OFF pin. "L" level: Display Off, “H" level: Display On.
64 Hz Pin
This is the output pin for adjusting the oscillation frequency. This pin constantly outputs a 64 Hz signal.
External Reset
This LSI can be reset by placing the A/C pin at a “L” level, and the display is off when the pin is at a “L” level.
After reset, the display starts from “1: 00”.
DISP_SEL
Pin for selecting the 12-hour system with AM/PM or the 24-hour system. The 12-hour system with AM/PM is
selected when the pin is driven at a “L” level and the 24-hour system is selected when the pin is driven at a “H”
level.
SW_EN_SEL
Adjustment enable pin. The H, M, and SET pins are disabled by driving the SW_EN_SEL pin at a “L” level
externally.
DU_SEL
LCD duty selection pin. The static mode is selected when the pin is driven at a “L” level, and the 1/2-duty dynamic
mode is selected when the pin is driven at a “H” level.
BIAS
Supply voltage pin for the middle level voltage of the common outputs.
The value of BIAS is calculated by the following formula:
BIAS=VCC/2
In the static display mode, this pin should be open.
Xin, Xout
Crystal oscillation pins for connecting a crystal and the capacitors (Cin and Cout) externally.
COM1, COM2
Output pins for LCD common.
Driving method
Static
1/2 Duty
Frame frequency
64Hz
64Hz
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FEDL9098B-01
ML9098B
TEST pin
Pin for manufacturer testing.
The pin should be left open or fixed at a “H” level when not used.
Power-On Reset
The power-on reset circuit built in this device eliminates the need for providing an external reset circuit.
Chatter Rejection
The chatter rejecting circuits are connected to the H, M, and SET pins.
A signal less than 15.625 msec is rejected as chatters.
Input wave form
15.625 msec
15.625 msec
Within this period, a signal is rejected as chatters.
Colon Flashing/Lighting Selection
Flashing or lighting of colon is selected by the COL_SEL pin.
COL_SEL
L
H
Operating mode
Flashing at 1 Hz
Lighting
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PACKAGE DIMENSIONS
(Unit: mm)
Notes for Mounting the Surface Mount Type Package
The surface mount type packages are very susceptible to heat in reflow mounting and humidity absorbed in storage.
Therefore, before you perform reflow mounting, contact ROHM's responsible sales person for the product name,
package name, pin number, package code and desired mounting conditions (reflow method, temperature and
times).
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REVISION HISTORY
Document No.
FEDL9098B-01
Date
Aug. 10, 2010
Page
Previous
Current
Edition
Edition
–
–
Description
Final edition 1
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FEDL9098B-01
ML9098B
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