TECHNICAL DATA



AUTOMOTIVE DIGITAL CLOCK IC


DESCRIPTION

IN7200 is a automotive digital clock, CMOS LSI.
IN7200
DIP-40
40
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It drives fluorescent indicator panel directly. It can
be driven by a 4.194304 MHz crystal oscillator or
an external clock signal (1024 Hz). It has 4-ways
display brightness control function and its display
format is 12 hours.

FEATURES

• 4.194304 MHz crystal oscillator
• 4-ways display brightness control
( Segment signal duty: 1, 1/2, 1/4, 1/8 )
• Hours and Minutes Setting
• ± 30 seconds auto correction
• 1024 Hz external clock drive
• 1024 Hz SIGNAL output
• Segment Output: P-channel open drain
• 40 DIP package MS-011AC
• Improved Power on Reset
ABSOLUTE MAXIMUM RATINGS (Ta = 25 °C)
Parameter Symbol Specification Unit
Power Supply Voltage V
DD
- V
SS
− 0.5 ~ + 8.0 V
Input Voltage V
IN
V
SS
− 0.3 ~ V
DD
+ 0.3 V
Output Voltage V
OUT
V
DD
− 30 ~ V
DD
+ 0.3 V
Operating Temperature T
a
− 40 ~ + 85 °C
Storage Temperature T
STG
− 55 ~ + 125 °C


DC CHARACTERISTICS (Ta=25°C, RH≤70%, CD=CG=15pF, Xtal=4.194304MHz)

Characteristic Symbol Test Conditions Min Typ Max Unit
Power Supply Voltage V
DD
-V
SS
3.0 — 7.0 V
Power Supply Current I
DD
No output loads, V
DD
=6V — 0.3 0.5 mA
Leakage Current I
OFF
V
DD
-V
SS
=5.0V 5.0 µA
High Level Output Current
(1)
I
OH1
V
DD
-V
SS
=3.0V, V
DD
-V
OUT
=0.5V 300 — 1500 µA
High Level Output Current
(2)
I
OH2
V
DD
-V
SS
=3.0V, V
DD
-V
OUT
=0.5V 500 — 1800 µA
Low Level Output Current
(3)
I
OL
V
DD
-V
SS
=3.0V, V
OUT
–V
SS
=0.5V 500 — — µA
High Level Input Current
(4)
I
IH1
V
IN
=V
DD
=6V — 15 30 µA
High Level Input Current
(5)
I
IH2
V
IN
=V
DD
=6V — 120 600 µA
External Clock Duty C
LD
40 50 60 %
OSC. Feedback Resistance R
F
V
DD
=6V 3 MΩ

(VDD-VSS=3.0~7.0V, Ta = −40 ~ +85°C, RH≤70%, CD=CG=15pF, Xtal=4.194304MHz)


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