PD178016GC-051_15 Datasheet, PDF (29/96 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER WITH BUILT-IN PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO APPLICATIONS

µPD178016GC-051
Momentary key
Description
M1
These keys are used to call and write to the preset memory in radio mode. In CD changer mode, they are
M2
used to directly select a disc.
M3
M4
(1) In radio mode
M5
The procedures for calling and writing to the preset memory are described below.
M6
Operation
Description
Call
Pressing any one of keys M1 to M6 , then releasing it within two seconds, calls the
contents of the preset memory location corresponding to the pressed key. When one
of these keys is pressed, the LCD panel switches to the frequency display.
Write
Pressing any one of keys M1 to M6 , and holding it down for at least two seconds,
causes the frequency to which the device is tuned to be written to the preset memory
location corresponding to the pressed key. When one of these keys is pressed, the
LCD panel switches to the frequency display or to the preset display when the
frequency is written.
The frequency is displayed for two seconds then PS is displayed for three seconds (if there is no PS,
the frequency is displayed for five seconds), after which the display returns to normal. When a fre-
quency is displayed, the preset number corresponding to the pressed key is displayed, and LCD
indicator “CH” lights.
One station in each of the FM1, FM2, FM3, and AM bands can be stored to one key; therefore, a total
of 24 stations can be stored.
The PI code, PS code, and AF list are also written to the preset memory.
In the initial state after the power is first applied, the following frequencies are written to the preset
memory.
(Region: Europe)
Band
M1
FM1 (MHz) 87.50
FM2 (MHz) 87.50
FM3 (MHz) 87.50
AM (kHz) 144
M2
89.90
87.50
87.50
153
M3
97.90
87.50
87.50
522
M4
105.90
87.50
87.50
603
M5
107.90
87.50
87.50
1 404
M6
87.50
87.50
87.50
144
(Region: USA)
Band
M1
FM1 (MHz) 87.50
FM2 (MHz) 87.50
FM3 (MHz) 87.50
AM (kHz) 530
M2
89.90
87.50
87.50
820
M3
97.90
87.50
87.50
1 120
M4
105.90
87.50
87.50
1 420
M5
107.90
87.50
87.50
1 720
M6
87.50
87.50
87.50
530
(2) In CD changer mode
These keys are used to directly select discs in CD changer mode.
Key
Description
M1
Plays disk 1.
M2
Plays disk 2.
M3
Plays disk 3.
M4
Plays disk 4.
M5
Plays disk 5.
M6
Plays disk 6.
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