LM8562
5. Alarm
The LM8562 contains two alarms on a 24-hour basis.
Alarm 1 ..... Superposition of 600 Hz and 1 Hz
Alarm 2 ..... Superposition of 1200 Hz and 1 Hz
6-minutes snooze
The alarm output duration time is 59 minutes. The 59-minute duration counter is common to the alarm 1, alarm2, and sleep
timer.
6. Time Setting, Dimmer
The 3 level input RT-TIME SET/DIMMER INPUT pin provides the following functions.
RT-TIME SET/DIMMER INPUT Pin Input
Functions
Time setting enable, normal display
Time, alarm time, sleep timer duration time setting enable
V
DD
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OPEN
Time setting inhibit, normal display
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Time setting enable (except power-down mode)
V
Time setting inhibit, dimmer display
Display brightness 50 Hz mode: 1/24 duty
SS
60 Hz mode: 1/20 duty
The 3-level input TIME-SET INPUT pin provides the following operations.
TIME-SET INPUT Pin Input
Operations
AC (50/60 Hz or more)
DC (20 ms min.)
Fast-up
V
DD
Slow-up
OPEN
No operation
Fast-down
Slow-down
AC (50/60 Hz or more)
DC (20 ms min.)
V
SS
Setting Contents
1 Fast-up/down
2 Slow-up/down
50/60 Hz rate
Immediately incremented/decremented ±1 and counted up/down at a 2 Hz rate 0.5 to 1.0 second later
7. ON/OFF INPUT Pin
The 3-level input ON/OFF INPUT pin acts on the ALM-1, 2 RADIO OUTPUT pins as shown below.
Pause
Conditions
Output Pin
ON-State Condition
OFF-State Conditions
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ALM-1 OUTPUT
Alarm 1 setting time = Current time
Snooze-in
ON/OFF INPUT = V
ON/OFF INPUT = V
Sleep-in
59 minutes after the alarm 1 is turned ON
ALM-1 OUTPUT = V
SS
DD
DD
ALM-2 OUTPUT
RADIO OUTPUT
Alarm 2 setting time = Current time
Snooze-in
ON/OFF INPUT = V
ON/OFF INPUT = V
Sleep-in
SS
DD
59 minutes after the alarm 2 is turned ON
ALM-2 OUTPUT = V
DD
DD
ON/OFF INPUT = V
(ON-state indicator : ON state)
—
—
ON/OFF INPUT = V
Power-down mode
Sleep-in
SS
(On-state indicator : OFF state)
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.
Sleep-in
(Sleep indicator : ON state)
ON/OFF INPUT = V
ON/OFF INPUT = V
Power-down mode
SS
DD
(Sleep indicator : OFF state)
8. Sleep, Snooze Timer
The 3-level input SLEEP/SNOOZE INPUT pin operates as shown below.
SLEEP/SNOOZE INPUT Pin Input
Operation
V
(20 ms min.)
Snooze-in & seconds display mode
DD
.
The alarm stops functioning for 6 to 7 minutes.
Seconds display
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OPEN
(20 ms min.)
No operation
V
Sleep mode
SS
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The sleep counter is set to operate for 59 minutes.
Counted down automatically at a 2 Hz rate 1.5 to 2.0 seconds later
Fast/slow, up/down time setting available
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No.2658-5/7
SANYO [ SANYO SEMICON DEVICE ]
