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