PD17012GF-058_15 Datasheet, PDF (55/94 Pages) Renesas Technology Corp – PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER (AUTOMOBILE APPLICATION)

µPD17012GF-058
3.2 Setting Alarm Mode
Alarm mode is set as follows:
The ignition switch
is turned off
The P.SCAN key
is pressed and
held down for two
seconds^Note
The ALARM key
is pressed
The door is
opened
The user gets
out of the car
The door is
closed
The IGNITION pin
goes low.
Alarm mode enabled The signal indicating
state
an open door is
recognized.
Note The time for each status can be set in this stage.
After recognizing
the signal indicating
a closed door, alarm
mode is selected
Press and hold down the P.SCAN key for two seconds. Then each time the key is pressed, the status
changes in the order of the exit time, entry time, reset time, and setting end.
Exit time
Entry time
Reset time
Initial value (s)
12
12
30
Specificate value (s)
3 to 180
3 to 180
3 to 180
Exit time : Time between opening and closing the door after pressing the ALARM key
Entry time : Time between opening the door and turning on the ignition switch
Reset time : Time during which an alarm sound is generated in alarm mode
To set alarm mode, the following pins and keys in (1) to (7) are used.
(1) IGNITION pin
The ignition switch signal is input from the key box.
IGNITION pin
At the low level
At the high level
State
• Power-off
• Alarm mode on (alarm being output) and alarm mode time setting enabled
• In alarm mode
Power-on enabled state
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