Alarm Clock. NTE2062 Datasheet

NTE2062 Clock. Datasheet pdf. Equivalent

Part NTE2062
Description Integrated Circuit PMOS Digital Alarm Clock
Feature NTE2062 Integrated Circuit PMOS Digital Alarm Clock Features: D Single–Chip ED MOS LSI D LED Direct .
Manufacture NTE
Datasheet
Download NTE2062 Datasheet



NTE2062
NTE2062
Integrated Circuit
PMOS Digital Alarm Clock
Features:
D Single–Chip ED MOS LSI
D LED Direct Drive by Time–Sharing (Duplex)
D Wide Operating Voltage Range
D Alarm on a 24–Hour Basis
D Two Selections of Time Format:
AM/PM 12–Hour Basis & 24–Hour Basis
D On–Chip CR Oscillator for Battery Backup
D 50Hz or 60Hz Reference Frequency
Functions:
D Real Time Display
D Alarm with Snooze
D Sleep Timer
D Automatic Advance Capable:
“Hours”, “Minutes”
D Sleep Timer:
Max. 59 Minutes or 1Hour, 59 Minutes
D Repeatedly Usable Snooze
D Power Failure Indicator
D 900Hz Output for Alarm Tone
Applications:
D Alarm Clock
D Clock Radio
Absolute Maximum Ratings: (VSS = 0, TA = +25°C unless otherwise specified)
Maximum Supply Voltage, VDDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –15 to +0.3V
Input Voltage, VIN
50/60Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –15 to +0.3V
Other Than 50/60Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –15 to +0.3V
Output Voltage, VOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –15 to +0.3V
Input Clamp Current, IIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.4 to +0.4mA
Allowable Power Dissipation (TA = +70°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Allowable Operating Ranges: (VSS = 0, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ
Supply Voltage
VDD
–14 –
Input “HIGH” Level Voltage
VIH 50/60Hz Input
–1.0 –
Other Than 50/60Hz Input
–1.5 –
Input “LOW” Level Voltage
VIL 50/60Hz
Other Than 50/60Hz
––
––
Input Voltage on 50/60Hz
VAC–IN Referenced to VSS
VLED
Max
–7.5
VDD+2
VDD+2
Unit
V
V
V
V
V
V



NTE2062
Electrical Characteristics: (VDD = 12V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Input HIGHLevel Current
Input LOWLevel Current
Output HIGHLevel Current
Output Leakage Current
Power Failure Detect Voltage
Current Dissipation
IIH VIN = VSS, 50/60Hz
VIN = VDD, Input Pins other than 50/60Hz
IIL VIN = VDD, 50/60Hz
VIN = VDD, Input Pins other than 50/60Hz
IOH Alarm Out, Sleep Out, VOH = VSS1V
10s Hr ag & de (24Hr Mode), VOUT =
VSS1V
Segment Outputs other than above,
VOUT = VSS1V
IOF Alarm Out, Sleep Out, VOUT = VDD
10s Hr ag & de (24Hr Mode), VOUT = VDD
Segment Outputs other than above,
VOUT = VDD
VDD
ICC Output: OFF, Input with PullDown
Resistor: Open
– – 10 µA
– – 20 µA
– – 10 µA
– – 10 µA
5 – – mA
36 – – mA
18 – – mA
– – 10 µA
– – 20 µA
– – 20 µA
7.5 5.0
57
V
mA
Stability of Oscillator for Backup
Accuracy of Oscillator for Backup
FS Typical value, 900Hz, VDD = 9V ±10%
FA Typical value, 900Hz, VDD = 9V ±10%
10 +10 %
10 +10 %
Operation Description:
50Hz/60Hz Input:
The OnChip Schmitt Trigger circuit allows a simple RC filter at the input to remove possible line volt-
age transients. An internal pullup resistor is provided.
CR Input: (Note 1)
When AC powerdown occurs, the time counter enters the holdmode and the onchip clock oscilla-
tor starts operating immediately. If there is no input at 50/60Hz inputduring 3clock period, this oscil-
lator controls the time counter advance instead of 50/60Hz input. The values of CR determine the
frequency of the onchip clock oscillator. All segment outputs are off during backup operation. If the
backup OSC is used at the powerdown mode, 50/60Hz inputmust be open or at VSS level.
50/60Hz Select Input:
Connecting 50/60Hz selectto VSS enables 50Hz operation. For 60Hz operating, 50/60Hz select
is left unconnected: Pulldown to VDD is provided by the internal pulldown resistor.
Display Mode Select Input (Alarm Display/Sleep Display):
The internal pulldown resistor allows the use of 2 SPST (singlepole singlethrow) switches to select
4 display modes listed in Table 1.
Select Input
Alarm Sleep
Display Mode
Table 1. Display Mode
Digit No.1
Digit No. 2
Digit No. 3
Digit No. 4
N.C.
N.C.
Time Display 10s Hour, AM/PM
Hour
10s Minute
Minute
VSS
N.C.
VSS
N.C.
VSS
VSS
Alarm Display 10s Hour, AM/PM
Sleep Display
Blanked
Seconds Display
Blanked
Hour
Hour
Minute
10s Minute
10s Minute
10s Second
Minute
Minute
Second
Note 1. If VSS is applied to 2 input of alarm displayand sleep displaysimultaneously, the seconds
display mode is entered.







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